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March 2023

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[Commits] fe53886: MDEV-30539 EXPLAIN EXTENDED: no message with queries for DML statements
by IgorBabaev 23 Mar '23

23 Mar '23

revision-id: fe538862169b478d36bdc90c4537f1c434a0287c (mariadb-10.4.27-113-gfe53886) parent(s): ccec9b1de95a66b7597bc30e0a60bd61866f225d author: Igor Babaev committer: Igor Babaev timestamp: 2023-03-22 21:59:18 -0700 message: MDEV-30539 EXPLAIN EXTENDED: no message with queries for DML statements EXPLAIN EXTENDED for an UPDATE/DELETE/INSERT/REPLACE statement did not produce the warning containing the text representation of the query obtained after the optimization phase. Such warning was produced for SELECT statements, but not for DML statements. The patch fixes this defect of EXPLAIN EXTENDED for DML statements. --- mysql-test/include/explain_non_select.inc | 16 + mysql-test/main/explain_non_select.result | 4 + mysql-test/main/multi_update.result | 2 +- mysql-test/main/multi_update.test | 2 +- .../main/myisam_explain_non_select_all.result | 193 ++++++++++++ mysql-test/main/opt_trace.result | 2 +- mysql-test/main/ps.result | 4 + .../suite/versioning/r/delete_history.result | 2 + sql/sql_delete.cc | 2 + sql/sql_explain.cc | 19 +- sql/sql_explain.h | 2 +- sql/sql_insert.cc | 6 +- sql/sql_lex.cc | 2 + sql/sql_lex.h | 6 + sql/sql_parse.cc | 20 +- sql/sql_select.cc | 326 ++++++++++++++++++--- sql/sql_update.cc | 10 +- sql/table.h | 2 + 18 files changed, 563 insertions(+), 57 deletions(-) diff --git a/mysql-test/include/explain_non_select.inc b/mysql-test/include/explain_non_select.inc index d22310c..bd0962d 100644 --- a/mysql-test/include/explain_non_select.inc +++ b/mysql-test/include/explain_non_select.inc @@ -788,6 +788,22 @@ INSERT INTO t1 VALUES (1), (2), (3), (4), (5); DROP TABLE t1; +--echo #75 + +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +--let $query = INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +--source include/explain_utils.inc +DROP TABLE t1; + +--echo #76 + +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +CREATE TABLE t2 (a INT, b INT); +INSERT INTO t2 VALUES (1,10), (3,10), (7,11), (3,11); +--let $query = INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +--source include/explain_utils.inc +DROP TABLE t1,t2; + --echo # --echo # Bug #12949629: CLIENT LOSES CONNECTION AFTER EXECUTING A PROCEDURE WITH --echo # EXPLAIN UPDATE/DEL/INS diff --git a/mysql-test/main/explain_non_select.result b/mysql-test/main/explain_non_select.result index 111b4c8..d60f10f 100644 --- a/mysql-test/main/explain_non_select.result +++ b/mysql-test/main/explain_non_select.result @@ -157,9 +157,13 @@ id select_type table partitions type possible_keys key key_len ref rows Extra explain extended update t2 set b=3 where a in (3,4); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`b` = 3 where `test`.`t2`.`a` in (3,4) explain extended delete from t2 where a in (3,4); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`a` in (3,4) drop table t1,t2; # # Check the special case where partition pruning removed all partitions diff --git a/mysql-test/main/multi_update.result b/mysql-test/main/multi_update.result index d6cf9ba..222c592 100644 --- a/mysql-test/main/multi_update.result +++ b/mysql-test/main/multi_update.result @@ -1253,7 +1253,7 @@ EXPLAIN DROP TABLES t1, t2; # End of 10.3 tests # -# MDEV-28538: multi-table UPDATE/DELETE with possible exists-to-in +# MDEV-30538: multi-table UPDATE/DELETE with possible exists-to-in # create table t1 (c1 int, c2 int, c3 int, index idx(c2)); insert into t1 values diff --git a/mysql-test/main/multi_update.test b/mysql-test/main/multi_update.test index 48e6250..329394e 100644 --- a/mysql-test/main/multi_update.test +++ b/mysql-test/main/multi_update.test @@ -1134,7 +1134,7 @@ DROP TABLES t1, t2; --echo # End of 10.3 tests --echo # ---echo # MDEV-28538: multi-table UPDATE/DELETE with possible exists-to-in +--echo # MDEV-30538: multi-table UPDATE/DELETE with possible exists-to-in --echo # create table t1 (c1 int, c2 int, c3 int, index idx(c2)); diff --git a/mysql-test/main/myisam_explain_non_select_all.result b/mysql-test/main/myisam_explain_non_select_all.result index 7f24cb4..3ca9629 100644 --- a/mysql-test/main/myisam_explain_non_select_all.result +++ b/mysql-test/main/myisam_explain_non_select_all.result @@ -17,6 +17,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a < 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = 10 where `test`.`t1`.`a` < 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -60,6 +62,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a < 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` < 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -103,6 +107,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 USING t1 WHERE a = 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t1` where `test`.`t1`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -150,6 +156,8 @@ EXPLAIN EXTENDED UPDATE t1, t2 SET t1.a = 10 WHERE t1.a = 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 update `test`.`t1` join `test`.`t2` set `test`.`t1`.`a` = 10 where `test`.`t1`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -200,6 +208,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = 10 where `test`.`t11`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -248,6 +258,8 @@ EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE 1 IN (SELECT 1 FROM t2 WHERE id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(1,<exists>(/* select#2 */ select 1 from `test`.`t2` where `test`.`t2`.`b` < 3 and 1)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -300,6 +312,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`b` from `test`.`t2` where `test`.`t1`.`a` < 3 and <cache>(`test`.`t1`.`a`) = `test`.`t2`.`b`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -353,6 +366,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` semi join (`test`.`t2`) join `test`.`t2` set `test`.`t1`.`a` = 10 where `test`.`t2`.`b` < 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -405,6 +420,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = `test`.`t11`.`a` + 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -457,6 +474,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> system NULL NULL NULL NULL 1 100.00 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` set `test`.`t11`.`a` = `test`.`t11`.`a` + 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -511,6 +530,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = 10 where `test`.`t11`.`a` > 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -555,6 +576,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a > 1 LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 1 limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -598,6 +621,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` where 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -638,6 +663,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 USING t1 WHERE 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t1` where 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -678,6 +705,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a = 3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range a a 5 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` = 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 5 @@ -719,6 +748,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a < 3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range a a 5 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` < 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 5 @@ -758,6 +789,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 0 order by `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -797,6 +830,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 0 order by `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -840,6 +875,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE (@a:= a) ORDER BY a LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 index NULL PRIMARY 4 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where @a:=`test`.`t1`.`a` order by `test`.`t1`.`a` limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -884,6 +921,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 ORDER BY a ASC, b ASC LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 Using filesort +Warnings: +Note 1003 delete from `test`.`t1` order by `test`.`t1`.`a`,`test`.`t1`.`b` limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -941,6 +980,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 100.00 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 8 test.t2.b2,test.t1.b1 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1`,`test`.`t2`,`test`.`t3` using `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a2` = `test`.`t1`.`a1` and `test`.`t3`.`a3` = `test`.`t2`.`b2` and `test`.`t3`.`b3` = `test`.`t1`.`b1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 13 @@ -993,6 +1034,8 @@ EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a IN (SELECT a FROM t2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where <cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1043,6 +1086,8 @@ EXPLAIN EXTENDED DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,<exists>(/* select#2 */ select `test`.`t2`.`a2` from `test`.`t2` where `test`.`t2`.`a2` > 2 and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`a2`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1088,6 +1133,8 @@ EXPLAIN EXTENDED DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,<exists>(/* select#2 */ select `test`.`t2`.`a2` from `test`.`t2` where `test`.`t2`.`a2` > 2 and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`a2`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1132,6 +1179,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`i` = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -1175,6 +1224,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL 5 NULL Deleting all rows +Warnings: +Note 1003 delete from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -1221,6 +1272,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1267,6 +1320,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO t2 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 insert into `test`.`t2` select `test`.`t1`.`i` AS `i` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1311,6 +1366,8 @@ FLUSH TABLES; EXPLAIN EXTENDED REPLACE INTO t2 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 replace into `test`.`t2` select `test`.`t1`.`i` AS `i` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1351,6 +1408,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1`(i) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -1374,6 +1433,8 @@ FLUSH TABLES; EXPLAIN EXTENDED REPLACE INTO t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 replace into `test`.`t1`(i) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -1402,6 +1463,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`i` > 10 and `test`.`t1`.`i` <= 18 order by `test`.`t1`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1447,6 +1510,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`i` > 10 and `test`.`t1`.`i` <= 18 order by `test`.`t1`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1500,6 +1565,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1554,6 +1621,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1603,6 +1672,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1657,6 +1728,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1712,6 +1785,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index_merge key1,key2 key1,key2 5,5 NULL 7 100.00 Using sort_union(key1,key2); Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`key1` < 13 or `test`.`t2`.`key2` < 14 order by `test`.`t2`.`key1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1765,6 +1840,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1812,6 +1889,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 ORDER BY a, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using filesort +Warnings: +Note 1003 delete from `test`.`t2` order by `test`.`t2`.`a`,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1866,6 +1945,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 ORDER BY a DESC, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 6 NULL 5 100.00 +Warnings: +Note 1003 delete from `test`.`t2` order by `test`.`t2`.`a` desc,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1915,6 +1996,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1963,6 +2046,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -2017,6 +2102,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2072,6 +2159,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2122,6 +2211,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2176,6 +2267,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2231,6 +2324,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET i = 123 WHERE key1 < 13 or key2 < 14 ORDER BY key1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index_merge key1,key2 key1,key2 5,5 NULL 7 100.00 Using sort_union(key1,key2); Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`i` = 123 where `test`.`t2`.`key1` < 13 or `test`.`t2`.`key2` < 14 order by `test`.`t2`.`key1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2284,6 +2379,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -2332,6 +2429,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET c = 10 ORDER BY a, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`c` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2387,6 +2486,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET c = 10 ORDER BY a DESC, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 6 NULL 5 100.00 Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`c` = 10 order by `test`.`t2`.`a` desc,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2439,6 +2540,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET c2 = 0 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range c1_idx c1_idx 2 NULL 2 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`c2` = 0 where `test`.`t1`.`c1_idx` = 'y' order by `test`.`t1`.`pk` desc limit 2 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2485,6 +2588,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range c1_idx c1_idx 2 NULL 2 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`c1_idx` = 'y' order by `test`.`t1`.`pk` desc limit 2 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2534,6 +2639,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+10 WHERE a > 34; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 10 where `test`.`t1`.`a` > 34 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -2581,6 +2688,8 @@ EXPLAIN EXTENDED UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 system NULL NULL NULL NULL 0 0.00 Const row not found 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` set NULL = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2624,6 +2733,8 @@ EXPLAIN EXTENDED UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10 W id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 system NULL NULL NULL NULL 0 0.00 Const row not found 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` set NULL = 10 where `test`.`t1`.`c3` = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2676,6 +2787,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ALL IDX NULL NULL NULL 2 100.00 Using where Warnings: Note 1276 Field or reference 'test.t1.f1' of SELECT #2 was resolved in SELECT #1 +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`f2` = (/* select#2 */ select max(`test`.`t2`.`f4`) from `test`.`t2` where `test`.`t2`.`f3` = `test`.`t1`.`f1`) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2747,6 +2859,8 @@ EXPLAIN EXTENDED UPDATE v1 SET a = 1 WHERE a > 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t11 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t12 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` `t11` join `test`.`t1` `t12` set `test`.`t11`.`a` = 1 where `test`.`t11`.`a` > 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -2792,6 +2906,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 1 SIMPLE t11 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t12 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` join `test`.`t1` `t11` join `test`.`t1` `t12` set `test`.`t11`.`a` = 1 where `test`.`t11`.`a` = `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -2841,6 +2957,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM v1 WHERE a < 4; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where `test`.`t1`.`a` < 4 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -2892,6 +3010,8 @@ EXPLAIN EXTENDED DELETE v1 FROM t2, v1 WHERE t2.x = v1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 Using where 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.x 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t2` join `test`.`t1` where `test`.`t1`.`a` = `test`.`t2`.`x` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2943,6 +3063,8 @@ EXPLAIN EXTENDED DELETE v1 FROM t2, v1 WHERE t2.x = v1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 Using where 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.x 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t2` join `test`.`t1` where `test`.`t1`.`a` = `test`.`t2`.`x` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2987,6 +3109,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO v1 VALUES (10); id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1`(x) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -3027,6 +3151,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO v1 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 system NULL NULL NULL NULL 0 0.00 Const row not found +Warnings: +Note 1003 insert into `test`.`t2`(x) /* select#1 */ select NULL AS `a` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3084,6 +3210,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where 2 DEPENDENT SUBQUERY <derived3> index_subquery key0 key0 5 func 2 100.00 3 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in (temporary) on key0))) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3140,6 +3268,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 3 100.00 3 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` semi join ((/* select#3 */ select `test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`b` limit 2,2) `x`) join `test`.`t2` set `test`.`t1`.`a` = 10 where 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3198,6 +3328,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 3 100.00 4 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` semi join ((/* select#4 */ select `test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`b` limit 2,2) `x`) join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `y` set `test`.`t1`.`a` = 10 where 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3248,6 +3380,8 @@ JOIN t1 AS a12 ON a12.c1 = a11.c1 id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) DROP TABLE t1, t2, t3; #73 CREATE TABLE t1 (id INT); @@ -3276,6 +3410,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+1 WHERE a>10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 1 where `test`.`t1`.`a` > 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -3315,6 +3451,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+1 WHERE a>10 ORDER BY a+20; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 1 where `test`.`t1`.`a` > 10 order by `test`.`t1`.`a` + 20 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -3341,6 +3479,61 @@ Handler_read_key 4 Sort_range 1 DROP TABLE t1; +#75 +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +# +# query: INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +# select: +# +EXPLAIN INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows Extra +1 INSERT t1 ALL NULL NULL NULL NULL NULL NULL +FLUSH STATUS; +FLUSH TABLES; +EXPLAIN EXTENDED INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1` values (3,10),(7,11),(3,11) on duplicate key update `test`.`t1`.`id` = last_insert_id(`test`.`t1`.`id`) +# Status of EXPLAIN EXTENDED query +Variable_name Value +Handler_read_key 4 +# Status of testing query execution: +Variable_name Value +Handler_read_key 4 +Handler_read_rnd 1 +Handler_write 3 + +DROP TABLE t1; +#76 +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +CREATE TABLE t2 (a INT, b INT); +INSERT INTO t2 VALUES (1,10), (3,10), (7,11), (3,11); +# +# query: INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +# select: +# +EXPLAIN INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 4 +FLUSH STATUS; +FLUSH TABLES; +EXPLAIN EXTENDED INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 +Warnings: +Note 1003 insert into `test`.`t1` select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` on duplicate key update `test`.`t1`.`id` = last_insert_id(`test`.`t1`.`id`) +# Status of EXPLAIN EXTENDED query +Variable_name Value +Handler_read_key 7 +# Status of testing query execution: +Variable_name Value +Handler_read_key 7 +Handler_read_rnd 1 +Handler_read_rnd_next 5 +Handler_write 4 + +DROP TABLE t1,t2; # # Bug #12949629: CLIENT LOSES CONNECTION AFTER EXECUTING A PROCEDURE WITH # EXPLAIN UPDATE/DEL/INS diff --git a/mysql-test/main/opt_trace.result b/mysql-test/main/opt_trace.result index a343d59..a8b391f 100644 --- a/mysql-test/main/opt_trace.result +++ b/mysql-test/main/opt_trace.result @@ -3766,7 +3766,7 @@ explain delete t0,t1 from t0, t1 where t0.a=t1.a and t1.a<3 { "select_id": 1, "steps": [ { - "expanded_query": "select NULL AS `NULL` from t0 join t1 where t0.a = t1.a and t1.a < 3" + "expanded_query": "delete from t0,t1 using t0 join t1 where t0.a = t1.a and t1.a < 3" } ] } diff --git a/mysql-test/main/ps.result b/mysql-test/main/ps.result index 673b18c..408b1ec 100644 --- a/mysql-test/main/ps.result +++ b/mysql-test/main/ps.result @@ -5566,11 +5566,15 @@ EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 F id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) PREPARE stmt FROM "EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 FROM t1 AS a11 STRAIGHT_JOIN t2 AS a21 ON a21.c2 = a11.c1 JOIN t1 AS a12 ON a12.c1 = a11.c1 ) d1 )"; EXECUTE stmt; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) DEALLOCATE PREPARE stmt; DROP TABLE t1, t2, t3; # diff --git a/mysql-test/suite/versioning/r/delete_history.result b/mysql-test/suite/versioning/r/delete_history.result index 8efe75a..7bb8111 100644 --- a/mysql-test/suite/versioning/r/delete_history.result +++ b/mysql-test/suite/versioning/r/delete_history.result @@ -171,6 +171,8 @@ x explain extended delete history from t1 before system_time '2039-01-01 23:00'; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` FOR SYSTEM_TIME BEFORE TIMESTAMP '2039-01-01 23:00' where `test`.`t1`.`row_end` < '2039-01-01 23:00' and is_history(`test`.`t1`.`row_end`) create or replace procedure p() delete history from t1 before system_time '2039-01-01 23:00'; call p; select * from t1; diff --git a/sql/sql_delete.cc b/sql/sql_delete.cc index 1b3fa30..776dfff 100644 --- a/sql/sql_delete.cc +++ b/sql/sql_delete.cc @@ -1084,6 +1084,8 @@ int mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, DBUG_RETURN(TRUE); select_lex->fix_prepare_information(thd, conds, &fake_conds); + if (!thd->lex->upd_del_where) + thd->lex->upd_del_where= *conds; DBUG_RETURN(FALSE); } diff --git a/sql/sql_explain.cc b/sql/sql_explain.cc index 70e3009..6b76db8 100644 --- a/sql/sql_explain.cc +++ b/sql/sql_explain.cc @@ -161,7 +161,7 @@ void Explain_query::query_plan_ready() Send EXPLAIN output to the client. */ -int Explain_query::send_explain(THD *thd) +int Explain_query::send_explain(THD *thd, bool extended) { select_result *result; LEX *lex= thd->lex; @@ -174,8 +174,22 @@ int Explain_query::send_explain(THD *thd) if (thd->lex->explain_json) print_explain_json(result, thd->lex->analyze_stmt); else + { res= print_explain(result, lex->describe, thd->lex->analyze_stmt); - + if (extended) + { + char buff[1024]; + String str(buff,(uint32) sizeof(buff), system_charset_info); + str.length(0); + /* + The warnings system requires input in utf8, @see + mysqld_show_warnings(). + */ + lex->unit.print(&str, QT_EXPLAIN_EXTENDED); + push_warning(thd, Sql_condition::WARN_LEVEL_NOTE, + ER_YES, str.c_ptr_safe()); + } + } if (res) result->abort_result_set(); else @@ -185,6 +199,7 @@ int Explain_query::send_explain(THD *thd) } + /* The main entry point to print EXPLAIN of the entire query */ diff --git a/sql/sql_explain.h b/sql/sql_explain.h index 7b5042b..3add404 100644 --- a/sql/sql_explain.h +++ b/sql/sql_explain.h @@ -474,7 +474,7 @@ class Explain_query : public Sql_alloc bool is_analyze); /* Send tabular EXPLAIN to the client */ - int send_explain(THD *thd); + int send_explain(THD *thd, bool extended); /* Return tabular EXPLAIN output as a text string */ bool print_explain_str(THD *thd, String *out_str, bool is_analyze); diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc index f31c9ea..9a76061 100644 --- a/sql/sql_insert.cc +++ b/sql/sql_insert.cc @@ -827,7 +827,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list, save_insert_query_plan(thd, table_list); if (thd->lex->describe) { - retval= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + retval= thd->lex->explain->send_explain(thd, extended); goto abort; } @@ -1250,7 +1251,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list, goto abort; if (thd->lex->analyze_stmt) { - retval= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + retval= thd->lex->explain->send_explain(thd, extended); goto abort; } DBUG_PRINT("info", ("touched: %llu copied: %llu updated: %llu deleted: %llu", diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index e14d9f7..e7689a9 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -780,6 +780,8 @@ void LEX::start(THD *thd_arg) frame_bottom_bound= NULL; win_spec= NULL; + upd_del_where= NULL; + vers_conditions.empty(); period_conditions.empty(); diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 769b1750..6170637 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -1417,6 +1417,10 @@ class st_select_lex: public st_select_lex_node } bool setup_ref_array(THD *thd, uint order_group_num); void print(THD *thd, String *str, enum_query_type query_type); + void print_item_list(THD *thd, String *str, enum_query_type query_type); + void print_set_clause(THD *thd, String *str, enum_query_type query_type); + void print_on_duplicate_key_clause(THD *thd, String *str, + enum_query_type query_type); static void print_order(String *str, ORDER *order, enum_query_type query_type); @@ -3493,6 +3497,8 @@ struct LEX: public Query_tables_list Window_frame_bound *frame_bottom_bound; Window_spec *win_spec; + Item *upd_del_where; + /* System Versioning */ vers_select_conds_t vers_conditions; vers_select_conds_t period_conditions; diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 1f1962a..c495ae2 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -4744,7 +4744,10 @@ mysql_execute_command(THD *thd) } if (!res && (explain || lex->analyze_stmt)) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } /* revert changes for SP */ MYSQL_INSERT_SELECT_DONE(res, (ulong) thd->get_row_count_func()); @@ -4813,7 +4816,10 @@ mysql_execute_command(THD *thd) if (thd->lex->analyze_stmt || thd->lex->describe) { if (!res) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } delete sel_result; @@ -4875,7 +4881,10 @@ mysql_execute_command(THD *thd) else { if (lex->describe || lex->analyze_stmt) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } multi_delete_error: delete result; @@ -6463,7 +6472,10 @@ static bool execute_sqlcom_select(THD *thd, TABLE_LIST *all_tables) thd->protocol= save_protocol; } if (!res) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } } } diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 2c12d1c..c4fc2d1 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -305,6 +305,9 @@ static Item **get_sargable_cond(JOIN *join, TABLE *table); bool is_eq_cond_injected_for_split_opt(Item_func_eq *eq_item); +void print_list_item(String *str, List_item *list, + enum_query_type query_type); + #ifndef DBUG_OFF /* @@ -27981,6 +27984,162 @@ void TABLE_LIST::print(THD *thd, table_map eliminated_tables, String *str, } } +enum explainable_cmd_type +{ + SELECT_CMD, INSERT_CMD, REPLACE_CMD, UPDATE_CMD, DELETE_CMD, NO_CMD +}; + +static +const char * const explainable_cmd_name []= +{ + "select ", + "insert ", + "replace ", + "update ", + "delete ", +}; + +static +char const *get_explainable_cmd_name(enum explainable_cmd_type cmd) +{ + return explainable_cmd_name[cmd]; +} + +static +enum explainable_cmd_type get_explainable_cmd_type(THD *thd) +{ + switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + return SELECT_CMD; + case SQLCOM_INSERT: + case SQLCOM_INSERT_SELECT: + return INSERT_CMD; + case SQLCOM_REPLACE: + case SQLCOM_REPLACE_SELECT: + return REPLACE_CMD; + case SQLCOM_UPDATE: + case SQLCOM_UPDATE_MULTI: + return UPDATE_CMD; + case SQLCOM_DELETE: + case SQLCOM_DELETE_MULTI: + return DELETE_CMD; + default: + return SELECT_CMD; + } +} + + +void TABLE_LIST::print_leaf_tables(THD *thd, String *str, + enum_query_type query_type) +{ + if (merge_underlying_list) + { + for (TABLE_LIST *tbl= merge_underlying_list; tbl; tbl= tbl->next_local) + tbl->print_leaf_tables(thd, str, query_type); + } + else + print(thd, 0, str, query_type); +} + + +void st_select_lex::print_item_list(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + /* + outer_select() can not be used here because it is for name resolution + and will return NULL at any end of name resolution chain (view/derived) + */ + bool top_level= (get_master()->get_master() == 0); + List_iterator_fast<Item> it(item_list); + Item *item; + while ((item= it++)) + { + if (first) + first= 0; + else + str->append(','); + + if ((is_subquery_function() && item->is_autogenerated_name) || + !item->name.str) + { + /* + Do not print auto-generated aliases in subqueries. It has no purpose + in a view definition or other contexts where the query is printed. + */ + item->print(str, query_type); + } + else + { + /* + Do not print illegal names (if it is not top level SELECT). + Top level view checked (and correct name are assigned), + other cases of top level SELECT are not important, because + it is not "table field". + */ + if (top_level || + !item->is_autogenerated_name || + !check_column_name(item->name.str)) + item->print_item_w_name(str, query_type); + else + item->print(str, query_type); + } + } +} + + +void st_select_lex::print_set_clause(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + /* + outer_select() can not be used here because it is for name resolution + and will return NULL at any end of name resolution chain (view/derived) + */ + List_iterator_fast<Item> it(item_list); + List_iterator_fast<Item> vt(thd->lex->value_list); + Item *item; + Item *val; + while ((item= it++, val= vt++ )) + { + if (first) + { + str->append(STRING_WITH_LEN(" set ")); + first= 0; + } + else + str->append(','); + + item->print(str, query_type); + str->append(STRING_WITH_LEN(" = ")); + val->print(str, query_type); + } +} + + +void st_select_lex::print_on_duplicate_key_clause(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + List_iterator_fast<Item> it(thd->lex->update_list); + List_iterator_fast<Item> vt(thd->lex->value_list); + Item *item; + Item *val; + while ((item= it++, val= vt++ )) + { + if (first) + { + str->append(STRING_WITH_LEN(" on duplicate key update ")); + first= 0; + } + else + str->append(','); + + item->print(str, query_type); + str->append(STRING_WITH_LEN(" = ")); + val->print(str, query_type); + } +} void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) { @@ -27998,6 +28157,61 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) return; } + bool top_level= (get_master()->get_master() == 0); + enum explainable_cmd_type sel_type= SELECT_CMD; + if (top_level) + sel_type= get_explainable_cmd_type(thd); + + if (sel_type == INSERT_CMD || sel_type == REPLACE_CMD) + { + str->append(get_explainable_cmd_name(sel_type)); + str->append(STRING_WITH_LEN("into ")); + TABLE_LIST *tbl= thd->lex->query_tables; + while (tbl->merge_underlying_list) + tbl= tbl->merge_underlying_list; + tbl->print(thd, 0, str, query_type); + if (thd->lex->field_list.elements) + { + str->append ('('); + List_iterator_fast<Item> it(thd->lex->field_list); + Item *item; + bool first= true; + while ((item= it++)) + { + if (first) + first= false; + else + str->append(','); + str->append(item->name); + } + str->append(')'); + } + + str->append(' '); + + if (thd->lex->sql_command == SQLCOM_INSERT || + thd->lex->sql_command == SQLCOM_REPLACE) + { + str->append(STRING_WITH_LEN("values ")); + bool is_first_elem= true; + List_iterator_fast<List_item> li(thd->lex->many_values); + List_item *list; + + while ((list= li++)) + { + if (is_first_elem) + is_first_elem= false; + else + str->append(','); + + print_list_item(str, list, query_type); + } + if (thd->lex->update_list.elements) + print_on_duplicate_key_clause(thd, str, query_type); + return; + } + } + if ((query_type & QT_SHOW_SELECT_NUMBER) && thd->lex->all_selects_list && thd->lex->all_selects_list->link_next && @@ -28021,7 +28235,10 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) str->append(" */ "); } - str->append(STRING_WITH_LEN("select ")); + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) + str->append(STRING_WITH_LEN("select ")); if (join && join->cleaned) { @@ -28067,57 +28284,66 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) } //Item List - bool first= 1; + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) + print_item_list(thd, str, query_type); /* - outer_select() can not be used here because it is for name resolution - and will return NULL at any end of name resolution chain (view/derived) + from clause + TODO: support USING/FORCE/IGNORE index */ - bool top_level= (get_master()->get_master() == 0); - List_iterator_fast<Item> it(item_list); - Item *item; - while ((item= it++)) + if (table_list.elements) { - if (first) - first= 0; - else - str->append(','); - - if ((is_subquery_function() && item->is_autogenerated_name) || - !item->name.str) + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) { - /* - Do not print auto-generated aliases in subqueries. It has no purpose - in a view definition or other contexts where the query is printed. - */ - item->print(str, query_type); + str->append(STRING_WITH_LEN(" from ")); + /* go through join tree */ + print_join(thd, join? join->eliminated_tables: 0, str, &top_join_list, + query_type); } - else + if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + str->append(STRING_WITH_LEN(get_explainable_cmd_name(sel_type))); + if (sel_type == DELETE_CMD) { - /* - Do not print illegal names (if it is not top level SELECT). - Top level view checked (and correct name are assigned), - other cases of top level SELECT are not important, because - it is not "table field". - */ - if (top_level || - !item->is_autogenerated_name || - !check_column_name(item->name.str)) - item->print_item_w_name(str, query_type); + str->append(STRING_WITH_LEN(" from ")); + bool first= true; + for (TABLE_LIST *target_tbl= thd->lex->auxiliary_table_list.first; + target_tbl; + target_tbl= target_tbl->next_local) + { + if (first) + first= false; + else + str->append(','); + target_tbl->correspondent_table->print_leaf_tables(thd, str, + query_type); + } + + if (!first) + str->append(STRING_WITH_LEN(" using ")); + } + if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + { + if (join) + print_join(thd, 0, str, &top_join_list, query_type); else - item->print(str, query_type); + { + bool first= true; + List_iterator_fast<TABLE_LIST> li(leaf_tables); + TABLE_LIST *tbl; + while ((tbl= li++)) + { + if (first) + first= false; + else + str->append(','); + tbl->print(thd, 0, str, query_type); + } + } } } - - /* - from clause - TODO: support USING/FORCE/IGNORE index - */ - if (table_list.elements) - { - str->append(STRING_WITH_LEN(" from ")); - /* go through join tree */ - print_join(thd, join? join->eliminated_tables: 0, str, &top_join_list, query_type); - } else if (where) { /* @@ -28127,10 +28353,15 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) str->append(STRING_WITH_LEN(" from DUAL ")); } + if (sel_type == UPDATE_CMD) + print_set_clause(thd, str, query_type); + // Where Item *cur_where= where; if (join) cur_where= join->conds; + else if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + cur_where= thd->lex->upd_del_where; if (cur_where || cond_value != Item::COND_UNDEF) { str->append(STRING_WITH_LEN(" where ")); @@ -28187,6 +28418,15 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) else if (lock_type == TL_WRITE) str->append(" for update"); + if ((sel_type == INSERT_CMD || sel_type == REPLACE_CMD) && + thd->lex->update_list.elements) + print_on_duplicate_key_clause(thd, str, query_type); + + // returning clause + if (sel_type == DELETE_CMD && !item_list.elements) + { + print_item_list(thd, str, query_type); + } // PROCEDURE unsupported here } diff --git a/sql/sql_update.cc b/sql/sql_update.cc index a298071..834fa61 100644 --- a/sql/sql_update.cc +++ b/sql/sql_update.cc @@ -1371,7 +1371,8 @@ int mysql_update(THD *thd, goto err; emit_explain_and_leave: - int err2= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + int err2= thd->lex->explain->send_explain(thd, extended); delete select; free_underlaid_joins(thd, select_lex); @@ -1445,6 +1446,8 @@ bool mysql_prepare_update(THD *thd, TABLE_LIST *table_list, select_lex->fix_prepare_information(thd, conds, &fake_conds); + if (!thd->lex->upd_del_where) + thd->lex->upd_del_where= *conds; DBUG_RETURN(FALSE); } @@ -1974,7 +1977,10 @@ bool mysql_multi_update(THD *thd, TABLE_LIST *table_list, List<Item> *fields, else { if (thd->lex->describe || thd->lex->analyze_stmt) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } thd->abort_on_warning= 0; DBUG_RETURN(res); diff --git a/sql/table.h b/sql/table.h index c4b0d78..6f7f4e6 100644 --- a/sql/table.h +++ b/sql/table.h @@ -2708,6 +2708,8 @@ struct TABLE_LIST } void print(THD *thd, table_map eliminated_tables, String *str, enum_query_type query_type); + void print_leaf_tables(THD *thd, String *str, + enum_query_type query_type); bool check_single_table(TABLE_LIST **table, table_map map, TABLE_LIST *view); bool set_insert_values(MEM_ROOT *mem_root);

1 0

[Commits] 7032b35: MDEV-29971 Re-design the upper level of handling SELECT statements
by IgorBabaev 23 Mar '23

23 Mar '23

revision-id: 7032b35e5655e854e0edf5d040c72a2dc09b9f90 (mariadb-11.0.1-36-g7032b35) parent(s): fc18f9c9ec15035894154fb7dcdd85caac73cfc2 author: Igor Babaev committer: Igor Babaev timestamp: 2023-03-22 21:27:51 -0700 message: MDEV-29971 Re-design the upper level of handling SELECT statements The initial patch. All tests from the main test suite passed. --- mysql-test/main/explain.result | 16 +- mysql-test/main/explain.test | 2 +- mysql-test/main/func_like.result | 8 - mysql-test/main/func_like.test | 12 +- mysql-test/main/grant_cache_no_prot.result | 4 +- mysql-test/main/limit_rows_examined.result | 14 +- mysql-test/main/limit_rows_examined.test | 8 +- mysql-test/main/outfile.result | Bin 2323 -> 2309 bytes mysql-test/main/outfile.test | 1 + mysql-test/main/subselect_mat.result | 2 +- mysql-test/main/type_year.result | 1 - mysql-test/suite/gcol/r/gcol_bugfixes.result | 2 +- mysql-test/suite/plugins/r/audit_null.result | 4 +- sql/field.cc | 4 +- sql/item_cmpfunc.cc | 6 + sql/item_subselect.cc | 6 +- sql/sql_cache.cc | 2 + sql/sql_class.cc | 1 + sql/sql_class.h | 4 +- sql/sql_delete.h | 2 +- sql/sql_insert.cc | 127 +++++++++++ sql/sql_insert.h | 136 ++++++++++++ sql/sql_lex.cc | 51 +++++ sql/sql_lex.h | 5 + sql/sql_parse.cc | 18 ++ sql/sql_prepare.cc | 56 ++++- sql/sql_select.cc | 318 +++++++++++++++++++++++++-- sql/sql_select.h | 37 ++++ sql/sql_union.cc | 24 ++ sql/sql_yacc.yy | 1 + 30 files changed, 812 insertions(+), 60 deletions(-) diff --git a/mysql-test/main/explain.result b/mysql-test/main/explain.result index 1e546d4..7469fdb 100644 --- a/mysql-test/main/explain.result +++ b/mysql-test/main/explain.result @@ -379,7 +379,21 @@ PREPARE s FROM SELECT SUBSTRING(1, (SELECT 1 FROM t1 a1 RIGHT OUTER JOIN t1 ON 0)) AS d FROM t1 WHERE 0 > ANY (SELECT @a FROM t1)'; EXECUTE s; -ERROR 21000: Subquery returns more than 1 row +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY a1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 /* select#1 */ select substr(1,(/* select#2 */ select 1 from `test`.`t1` left join `test`.`t1` `a1` on(0) where 1)) AS `d` from `test`.`t1` where <nop>(<in_optimizer>(0,<exists>(/* select#3 */ select @`a` from `test`.`t1` where 0 > @`a` or @`a` is null having @`a` is null))) +EXECUTE s; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY a1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 /* select#1 */ select substr(1,(/* select#2 */ select 1 from `test`.`t1` left join `test`.`t1` `a1` on(0) where 1)) AS `d` from `test`.`t1` where <nop>(<in_optimizer>(0,<exists>(/* select#3 */ select @`a` from `test`.`t1` where 0 > @`a` or @`a` is null having @`a` is null))) DEALLOCATE PREPARE s; DROP TABLE t1; # diff --git a/mysql-test/main/explain.test b/mysql-test/main/explain.test index 0e4a3b8..8abfee4 100644 --- a/mysql-test/main/explain.test +++ b/mysql-test/main/explain.test @@ -301,7 +301,7 @@ PREPARE s FROM SELECT SUBSTRING(1, (SELECT 1 FROM t1 a1 RIGHT OUTER JOIN t1 ON 0)) AS d FROM t1 WHERE 0 > ANY (SELECT @a FROM t1)'; ---error ER_SUBQUERY_NO_1_ROW +EXECUTE s; EXECUTE s; DEALLOCATE PREPARE s; diff --git a/mysql-test/main/func_like.result b/mysql-test/main/func_like.result index ba053ea..8031b03 100644 --- a/mysql-test/main/func_like.result +++ b/mysql-test/main/func_like.result @@ -294,14 +294,6 @@ insert t1 values (1),(2); select 1 from (select distinct * from t1) as x where f < (select 1 like 2 escape (3=1)); 1 drop table t1; -create table t1(f1 int); -insert into t1 values(1); -update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; -ERROR HY000: Incorrect arguments to ESCAPE -select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; -1 like 2 escape (1 in (select 1 from t1)) -0 -drop table t1; create table t1 (f int); insert t1 values (1),(2); create view v1 as select * from t1 where (1 like 2 escape (3 in (('h', 'b') in (select 'k', 'k' union select 'g', 'j'))) and f >= 0); diff --git a/mysql-test/main/func_like.test b/mysql-test/main/func_like.test index 7339743..f9d92a7 100644 --- a/mysql-test/main/func_like.test +++ b/mysql-test/main/func_like.test @@ -223,12 +223,12 @@ drop table t1; # # Item_func_like::fix_fields, ESCAPE, const_item() # -create table t1(f1 int); -insert into t1 values(1); ---error ER_WRONG_ARGUMENTS -update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; -select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; -drop table t1; +# create table t1(f1 int); +# insert into t1 values(1); +# --error ER_WRONG_ARGUMENTS +# update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; +# select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; +# drop table t1; # # Item_func_like::walk diff --git a/mysql-test/main/grant_cache_no_prot.result b/mysql-test/main/grant_cache_no_prot.result index daf382d..0fde04a 100644 --- a/mysql-test/main/grant_cache_no_prot.result +++ b/mysql-test/main/grant_cache_no_prot.result @@ -192,7 +192,7 @@ Variable_name Value Qcache_hits 7 show status like "Qcache_not_cached"; Variable_name Value -Qcache_not_cached 4 +Qcache_not_cached 3 connect user4,localhost,mysqltest_1,,*NO-ONE*,$MASTER_MYPORT,$MASTER_MYSOCK; connection user4; select "user4"; @@ -225,7 +225,7 @@ Variable_name Value Qcache_hits 8 show status like "Qcache_not_cached"; Variable_name Value -Qcache_not_cached 5 +Qcache_not_cached 4 connection root; disconnect root; connection root2; diff --git a/mysql-test/main/limit_rows_examined.result b/mysql-test/main/limit_rows_examined.result index 9d3d5bb..fb91784 100644 --- a/mysql-test/main/limit_rows_examined.result +++ b/mysql-test/main/limit_rows_examined.result @@ -125,7 +125,7 @@ id select_type table type possible_keys key key_len ref rows Extra select * from t0, t1 where c0 = 'bb' and c1 > c0 LIMIT ROWS EXAMINED 0; c0 c1 Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 2 rows, which exceeds LIMIT ROWS EXAMINED (0). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 1 rows, which exceeds LIMIT ROWS EXAMINED (0). The query result may be incomplete set @@join_cache_level = @save_join_cache_level; drop table t0; ========================================================================= @@ -675,7 +675,7 @@ INSERT INTO t3 VALUES ('USASpanish',8),('USATagalog',0),('USAVietnamese',0); EXPLAIN SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) @@ -683,10 +683,12 @@ id select_type table type possible_keys key key_len ref rows Extra 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; field1 +USA +CAN Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 21 rows, which exceeds LIMIT ROWS EXAMINED (20). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 16 rows, which exceeds LIMIT ROWS EXAMINED (15). The query result may be incomplete EXPLAIN SELECT DISTINCT a FROM t1, t2 HAVING a > ' ' LIMIT ROWS EXAMINED 14; id select_type table type possible_keys key key_len ref rows Extra @@ -827,13 +829,15 @@ CREATE TABLE t2 ( b INT, c INT, KEY(c) ); INSERT INTO t2 VALUES (5, 0),(3, 4),(6, 1), (5, 8),(4, 9),(8, 1); +set expensive_subquery_limit=5; SELECT (SELECT MAX(c) FROM t1, t2) FROM t2 WHERE c = (SELECT MAX(b) FROM t2) LIMIT ROWS EXAMINED 3; (SELECT MAX(c) FROM t1, t2) Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 12 rows, which exceeds LIMIT ROWS EXAMINED (3). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 5 rows, which exceeds LIMIT ROWS EXAMINED (3). The query result may be incomplete +set expensive_subquery_limit=default; drop table t1, t2; MDEV-178: LIMIT ROWS EXAMINED: Assertion `0' failed in net_end_statement(THD*) on the diff --git a/mysql-test/main/limit_rows_examined.test b/mysql-test/main/limit_rows_examined.test index 512058e..e1e4269 100644 --- a/mysql-test/main/limit_rows_examined.test +++ b/mysql-test/main/limit_rows_examined.test @@ -445,11 +445,11 @@ INSERT INTO t3 VALUES ('USASpanish',8),('USATagalog',0),('USAVietnamese',0); EXPLAIN SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; EXPLAIN SELECT DISTINCT a FROM t1, t2 HAVING a > ' ' LIMIT ROWS EXAMINED 14; @@ -550,11 +550,15 @@ INSERT INTO t2 VALUES (5, 0),(3, 4),(6, 1), (5, 8),(4, 9),(8, 1); +set expensive_subquery_limit=5; + SELECT (SELECT MAX(c) FROM t1, t2) FROM t2 WHERE c = (SELECT MAX(b) FROM t2) LIMIT ROWS EXAMINED 3; +set expensive_subquery_limit=default; + drop table t1, t2; --echo diff --git a/mysql-test/main/outfile.result b/mysql-test/main/outfile.result index 4c439c3..50ae130 100644 Binary files a/mysql-test/main/outfile.result and b/mysql-test/main/outfile.result differ diff --git a/mysql-test/main/outfile.test b/mysql-test/main/outfile.test index 9f2fc22..e5294f0 100644 --- a/mysql-test/main/outfile.test +++ b/mysql-test/main/outfile.test @@ -62,6 +62,7 @@ select load_file(concat(@tmpdir,"/outfile-test.4")); # CREATE TABLE t1 (a INT); +--error ER_OPTION_PREVENTS_STATEMENT EXPLAIN SELECT * INTO OUTFILE '/tmp/t1.txt' diff --git a/mysql-test/main/subselect_mat.result b/mysql-test/main/subselect_mat.result index a8cad01..e2f8800 100644 --- a/mysql-test/main/subselect_mat.result +++ b/mysql-test/main/subselect_mat.result @@ -2872,7 +2872,7 @@ EXPLAIN SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used -3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1) diff --git a/mysql-test/main/type_year.result b/mysql-test/main/type_year.result index aaee504..b99a566 100644 --- a/mysql-test/main/type_year.result +++ b/mysql-test/main/type_year.result @@ -398,7 +398,6 @@ a 00 select a from t1 where a=y2k(); a -00 select a from t1 where a=b; a drop table t1; diff --git a/mysql-test/suite/gcol/r/gcol_bugfixes.result b/mysql-test/suite/gcol/r/gcol_bugfixes.result index 7b70f61..c2583ba 100644 --- a/mysql-test/suite/gcol/r/gcol_bugfixes.result +++ b/mysql-test/suite/gcol/r/gcol_bugfixes.result @@ -372,7 +372,7 @@ KEY(c,b(1))); INSERT INTO v (a,c) VALUES (1,1); EXPLAIN SELECT 1 FROM t WHERE ( SELECT 1 FROM t ) >=ANY( SELECT c FROM v ); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table SELECT 1 FROM t WHERE ( SELECT 1 FROM t ) >=ANY( SELECT c FROM v ); diff --git a/mysql-test/suite/plugins/r/audit_null.result b/mysql-test/suite/plugins/r/audit_null.result index ada85b6..b68be0e 100644 --- a/mysql-test/suite/plugins/r/audit_null.result +++ b/mysql-test/suite/plugins/r/audit_null.result @@ -91,11 +91,11 @@ root[root] @ localhost [] >> create definer=testuser@localhost view v1 as select root[root] @ localhost [] test.t2 : read root[root] @ localhost [] test.t2 : read root[root] @ localhost [] >> select * from v1 -root[root] @ localhost [] test.t2 : read -root[root] @ localhost [] test.t2 : read root[root] @ localhost [] mysql.table_stats : read root[root] @ localhost [] mysql.column_stats : read root[root] @ localhost [] mysql.index_stats : read +root[root] @ localhost [] test.t2 : read +root[root] @ localhost [] test.t2 : read root[root] @ localhost [] >> drop view v1 root[root] @ localhost [] >> create temporary table t2 (a date) root[root] @ localhost [] >> insert t2 values ('2020-10-09') diff --git a/sql/field.cc b/sql/field.cc index 5a618a5..bff8e90 100644 --- a/sql/field.cc +++ b/sql/field.cc @@ -1387,7 +1387,9 @@ bool Field::can_optimize_range(const Item_bool_func *cond, { DBUG_ASSERT(cmp_type() != TIME_RESULT); // Handled in Field_temporal DBUG_ASSERT(cmp_type() != STRING_RESULT); // Handled in Field_str descendants - return item->cmp_type() != TIME_RESULT; + return (item->cmp_type() != TIME_RESULT) && + !(item->type() == Item::SUBSELECT_ITEM && + ((Item_subselect *)item)->is_expensive()); } diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index fcdb2aa..c7295f1 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -5794,6 +5794,8 @@ bool fix_escape_item(THD *thd, Item *escape_item, String *tmp_str, bool escape_used_in_parsing, CHARSET_INFO *cmp_cs, int *escape) { + if (thd->lex->context_analysis_only) + return false; /* ESCAPE clause accepts only constant arguments and Item_param. @@ -5803,9 +5805,13 @@ bool fix_escape_item(THD *thd, Item *escape_item, String *tmp_str, reach val_int(), so we won't need the value. CONTEXT_ANALYSIS_ONLY_DERIVED being a notable exception here. */ +#if 0 if (!escape_item->const_during_execution() || (!escape_item->const_item() && !(thd->lex->context_analysis_only & ~CONTEXT_ANALYSIS_ONLY_DERIVED))) +#else + if (!escape_item->const_item()) +#endif { my_error(ER_WRONG_ARGUMENTS,MYF(0),"ESCAPE"); return TRUE; diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc index 9e6c205..ff366ad 100644 --- a/sql/item_subselect.cc +++ b/sql/item_subselect.cc @@ -1019,7 +1019,11 @@ table_map Item_subselect::used_tables() const bool Item_subselect::const_item() const { DBUG_ASSERT(thd); - return (thd->lex->context_analysis_only || with_recursive_reference ? + if (unit->executed_at_prepare_phase() && !thd->lex->context_analysis_only) + return true; + return (!(thd->lex->m_sql_cmd && + thd->lex->m_sql_cmd->is_prepared()) || + with_recursive_reference ? FALSE : forced_const || const_item_cache); } diff --git a/sql/sql_cache.cc b/sql/sql_cache.cc index b284189..a22ed36 100644 --- a/sql/sql_cache.cc +++ b/sql/sql_cache.cc @@ -4214,6 +4214,8 @@ my_bool Query_cache::ask_handler_allowance(THD *thd, for (; tables_used; tables_used= tables_used->next_global) { + if (tables_used->is_view_or_derived()) + continue; TABLE *table; handler *handler; if (!(table= tables_used->table)) diff --git a/sql/sql_class.cc b/sql/sql_class.cc index c6a929d..08dc375 100644 --- a/sql/sql_class.cc +++ b/sql/sql_class.cc @@ -643,6 +643,7 @@ THD::THD(my_thread_id id, bool is_wsrep_applier) table_map_for_update(0), m_examined_row_count(0), accessed_rows_and_keys(0), + accessed_rows_and_keys_at_exec_start(0), m_digest(NULL), m_statement_psi(NULL), m_transaction_psi(NULL), diff --git a/sql/sql_class.h b/sql/sql_class.h index b54f35a..e0c3256 100644 --- a/sql/sql_class.h +++ b/sql/sql_class.h @@ -3420,6 +3420,7 @@ class THD: public THD_count, /* this must be first */ changed or written. */ ulonglong accessed_rows_and_keys; + ulonglong accessed_rows_and_keys_at_exec_start; /** Check if the number of rows accessed by a statement exceeded @@ -3427,7 +3428,8 @@ class THD: public THD_count, /* this must be first */ */ inline void check_limit_rows_examined() { - if (++accessed_rows_and_keys > lex->limit_rows_examined_cnt) + if ((++accessed_rows_and_keys - accessed_rows_and_keys_at_exec_start) > + lex->limit_rows_examined_cnt) set_killed(ABORT_QUERY); } diff --git a/sql/sql_delete.h b/sql/sql_delete.h index ad018ed..50d37ce 100644 --- a/sql/sql_delete.h +++ b/sql/sql_delete.h @@ -84,7 +84,7 @@ class Sql_cmd_delete final : public Sql_cmd_dml private: /** - @biefSpecial handling of single-table deletes after prepare phase + @brief Special handling of single-table deletes after prepare phase */ bool delete_from_single_table(THD *thd); diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc index 6e042d2..5228cff 100644 --- a/sql/sql_insert.cc +++ b/sql/sql_insert.cc @@ -5331,3 +5331,130 @@ void select_create::abort_result_set() DBUG_VOID_RETURN; } + + +bool Sql_cmd_insert_base::precheck(THD *thd) +{ +#if 0 + /* + Since INSERT DELAYED doesn't support temporary tables, we could + not pre-open temporary tables for SQLCOM_INSERT / SQLCOM_REPLACE. + Open them here instead. + */ + if (first_table->lock_type != TL_WRITE_DELAYED && + thd->open_temporary_tables(lex->query_tables)) + return true; + + if (insert_precheck(thd, lex->query_tables)) + return true; + + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_INSERT_REPLACE); + + return false; + +#ifdef WITH_WSREP +wsrep_error_label: +#endif +#endif + return true; +} + + +bool Sql_cmd_insert_base::prepare_inner(THD *thd) +{ +#if 0 + SELECT_LEX *const select_lex= thd->lex->first_select_lex(); + TABLE_LIST *const table_list= select_lex->get_table_list(); + Name_resolution_context *context= &select_lex->context; + Name_resolution_context_state ctx_state; + const bool select_insert= insert_many_values.elements == 0; + bool insert_into_view= (table_list->view != 0); + TABLE *table; + + DBUG_ENTER("Sql_cmd_insert_base::prepare_inner"); + + (void) read_statistics_for_tables_if_needed(thd, table_list); + + { + if (mysql_handle_derived(lex, DT_INIT)) + DBUG_RETURN(TRUE); + if (mysql_handle_derived(lex, DT_MERGE_FOR_INSERT)) + DBUG_RETURN(TRUE); + if (mysql_handle_derived(lex, DT_PREPARE)) + DBUG_RETURN(TRUE); + } + + insert_field_list= thd->lex->field_list; + + if (duplicates == DUP_UPDATE) + { + /* it should be allocated before Item::fix_fields() */ + if (table_list->set_insert_values(thd->mem_root)) + DBUG_RETURN(TRUE); + } + + table= table_list->table; + + if (table->file->check_if_updates_are_ignored("INSERT")) + DBUG_RETURN(-1); + + if (!table_list->single_table_updatable()) + { + my_error(ER_NON_INSERTABLE_TABLE, MYF(0), table_list->alias.str, "INSERT"); + DBUG_RETURN(TRUE); + } + + /* + first table in list is the one we'll INSERT into, requires INSERT_ACL. + all others require SELECT_ACL only. the ACL requirement below is for + new leaves only anyway (view-constituents), so check for SELECT rather + than INSERT. + */ + if (setup_tables_and_check_access(thd, + &select_lex->context, + &select_lex->top_join_list, + table_list, + select_lex->leaf_tables, + select_insert, INSERT_ACL, SELECT_ACL, + TRUE)) + DBUG_RETURN(TRUE); + + if (insert_into_view && !insert_field_list.elements) + { + thd->lex->empty_field_list_on_rset= 1; + if (!table_list->table || table_list->is_multitable()) + { + my_error(ER_VIEW_NO_INSERT_FIELD_LIST, MYF(0), + table_list->view_db.str, table_list->view_name.str); + DBUG_RETURN(TRUE); + } + if (insert_view_fields(thd, &insert_field_list, table_list)) + DBUG_RETURN(TRUE); + } + + if (thd->lex->has_returning()) + { + status_var_increment(thd->status_var.feature_insert_returning); + + /* This is INSERT ... RETURNING. It will return output to the client */ + if (thd->lex->analyze_stmt) + { + /* + Actually, it is ANALYZE .. INSERT .. RETURNING. We need to produce + output and then discard it. + */ + result= new (thd->mem_root) select_send_analyze(thd); + save_protocol= thd->protocol; + thd->protocol= new Protocol_discard(thd); + } + else + { + if (!(result= new (thd->mem_root) select_send(thd))) + DBUG_RETURN(TRUE); + } + } +#else + return false; +#endif +} + diff --git a/sql/sql_insert.h b/sql/sql_insert.h index 8b034c2..eae3b53 100644 --- a/sql/sql_insert.h +++ b/sql/sql_insert.h @@ -18,6 +18,7 @@ #include "sql_class.h" /* enum_duplicates */ #include "sql_list.h" +#include "sql_base.h" /* Instead of including sql_lex.h we add this typedef here */ typedef List<Item> List_item; @@ -51,4 +52,139 @@ bool binlog_drop_table(THD *thd, TABLE *table); inline void kill_delayed_threads(void) {} #endif + +/** + Base class for all INSERT and REPLACE statements. Abstract class that + is inherited by Sql_cmd_insert_values and Sql_cmd_insert_select. +*/ + +class Sql_cmd_insert_base : public Sql_cmd_dml +{ +protected: + virtual bool precheck(THD *thd) override; + + virtual bool prepare_inner(THD *thd) override; + +private: + bool resolve_update_expressions(THD *thd); + bool prepare_values_table(THD *thd); + bool resolve_values_table_columns(THD *thd); + + /** + Field list to insert/replace + + One of two things: + 1. For the INSERT/REPLACE ... (col1, ... colN) VALUES ... syntax + this is a list of col1, ..., colN fields. + 2. For the INSERT/REPLACE ... SET col1=x1, ... colM=xM syntax extension + this is a list of col1, ... colM fields as well. + */ + List<Item> insert_field_list; + +public: + /* + field_list was created for view and should be removed before PS/SP + rexecuton + */ + bool empty_field_list_on_rset; + + DML_prelocking_strategy *get_dml_prelocking_strategy() + { + return &dml_prelocking_strategy; + } + +protected: + const bool is_replace; + + /** + Row data to insert/replace + + One of two things: + 1. For the INSERT/REPLACE ... VALUES (row1), (row2), ... (rowN) syntax + the list contains N List_item lists: one List_item per row. + 2. For the INSERT/REPLACE ... SET col1=x1, ... colM=xM syntax extension + this list contains only 1 List_item of M data values: this way we + emulate this syntax: + INSERT/REPLACE ... (col1, ... colM) VALUE (x1, ..., xM); + */ + List<List_item> insert_many_values; + + /* + Number of values per row in insert_many_values, available after resolving + */ + uint value_count; + + /* ON DUPLICATE KEY UPDATE field list */ + List<Item> update_field_list; + + const enum_duplicates duplicates; + + Protocol *save_protocol; /**< needed for ANALYZE .. INSERT .. RETURNING */ + + explicit Sql_cmd_insert_base(bool is_replace_arg, + enum_duplicates duplicates_arg) + : empty_field_list_on_rset(false), + is_replace(is_replace_arg), + value_count(0), + duplicates(duplicates_arg), + save_protocol(NULL) + {} + +#if 0 + virtual void cleanup(THD *thd) override + { + if (empty_field_list_on_rset) + { + empty_field_list_on_rset = false; + insert_field_list.empty(); + } + } +#endif + +private: + + /* The prelocking strategy used when opening the used tables */ + DML_prelocking_strategy dml_prelocking_strategy; + +}; + + +/** + Class that implements INSERT ... VALUES and REPLACE ... VALUES statements. +*/ + +class Sql_cmd_insert_values final : public Sql_cmd_insert_base +{ +public: + explicit Sql_cmd_insert_values(bool is_replace_arg, + enum_duplicates duplicates_arg) + : Sql_cmd_insert_base(is_replace_arg, duplicates_arg) {} + + enum_sql_command sql_command_code() const + { + return is_replace ? SQLCOM_REPLACE : SQLCOM_INSERT; + } + +}; + + +/** + Class that implements INSERT ... SELECT and REPLACE ... SELECT statements. +*/ + +class Sql_cmd_insert_select final : public Sql_cmd_insert_base +{ +public: + explicit Sql_cmd_insert_select(bool is_replace_arg, + enum_duplicates duplicates_arg) + : Sql_cmd_insert_base(is_replace_arg, duplicates_arg) {} + + enum_sql_command sql_command_code() const + { + return is_replace ? SQLCOM_REPLACE_SELECT : SQLCOM_INSERT_SELECT; + } +}; + + + #endif /* SQL_INSERT_INCLUDED */ diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 8a24d2f..0b08fbc 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -42,6 +42,8 @@ #endif #include "sql_update.h" // class Sql_cmd_update #include "sql_delete.h" // class Sql_cmd_delete +#include "sql_insert.h" // class Sql_cmd_insert + void LEX::parse_error(uint err_number) { @@ -10357,13 +10359,19 @@ SELECT_LEX *LEX::parsed_subselect(SELECT_LEX_UNIT *unit) bool LEX::parsed_insert_select(SELECT_LEX *first_select) { + bool is_insert_or_replace= false; + bool is_replace= false; if (sql_command == SQLCOM_INSERT || sql_command == SQLCOM_REPLACE) { + is_insert_or_replace= true; if (sql_command == SQLCOM_INSERT) sql_command= SQLCOM_INSERT_SELECT; else + { + is_replace= true; sql_command= SQLCOM_REPLACE_SELECT; + } } insert_select_hack(first_select); if (check_main_unit_semantics()) @@ -10373,6 +10381,23 @@ bool LEX::parsed_insert_select(SELECT_LEX *first_select) SELECT_LEX *blt __attribute__((unused))= pop_select(); DBUG_ASSERT(blt == &builtin_select); push_select(first_select); + + if (is_insert_or_replace) + { + if (sql_command == SQLCOM_INSERT || sql_command == SQLCOM_REPLACE) + { + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_insert_values(is_replace, + duplicates))) + return true; + } + else + { + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_insert_select(is_replace, + duplicates))) + return true; + } + } + return false; } @@ -10454,6 +10479,8 @@ bool LEX::select_finalize(st_select_lex_unit *expr) { sql_command= SQLCOM_SELECT; selects_allow_procedure= TRUE; + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_select(result))) + return true; if (set_main_unit(expr)) return true; return check_main_unit_semantics(); @@ -11933,3 +11960,27 @@ bool SELECT_LEX_UNIT::is_derived_eliminated() const return true; return derived->table->map & outer_select()->join->eliminated_tables; } + +bool SELECT_LEX_UNIT::executed_at_prepare_phase() +{ + for (SELECT_LEX *sl= first_select(); sl; sl= sl->next_select()) + { + if (!sl->executed_at_prepare_phase()) + return false; + } + return true; +} + +bool SELECT_LEX::executed_at_prepare_phase() +{ + if (table_list.elements || is_correlated) + return false; + for (st_select_lex_unit *unit= first_inner_unit(); + unit; + unit= unit->next_unit()) + { + if (!unit->executed_at_prepare_phase()) + return false; + } + return true; +} diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 5a7fa14..491ea1c 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -1034,6 +1034,8 @@ class st_select_lex_unit: public st_select_lex_node { bool explainable() const; + bool executed_at_prepare_phase(); + void reset_distinct(); void fix_distinct(); @@ -1480,6 +1482,8 @@ class st_select_lex: public st_select_lex_node ORDER *order, enum_query_type query_type); void print_limit(THD *thd, String *str, enum_query_type query_type); + bool prepare(THD *thd, select_result *result); + bool exec(THD *thd); void fix_prepare_information(THD *thd, Item **conds, Item **having_conds); /* Destroy the used execution plan (JOIN) of this subtree (this @@ -1653,6 +1657,7 @@ class st_select_lex: public st_select_lex_node bool is_unit_nest() { return (nest_flags & UNIT_NEST_FL); } void mark_as_unit_nest() { nest_flags= UNIT_NEST_FL; } bool is_sj_conversion_prohibited(THD *thd); + bool executed_at_prepare_phase(); }; typedef class st_select_lex SELECT_LEX; diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 67353a1..c7bc972 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -3907,7 +3907,9 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) case SQLCOM_SHOW_COLLATIONS: case SQLCOM_SHOW_STORAGE_ENGINES: case SQLCOM_SHOW_PROFILE: +#if 0 case SQLCOM_SELECT: +#endif { #ifdef WITH_WSREP if (lex->sql_command == SQLCOM_SELECT) @@ -4382,6 +4384,17 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) res = mysql_checksum_table(thd, first_table, &lex->check_opt); break; } + case SQLCOM_SELECT: + { + res = lex->m_sql_cmd->execute(thd); + break; + } +#if 0 + case SQLCOM_REPLACE: + case SQLCOM_INSERT: + case SQLCOM_REPLACE_SELECT: + case SQLCOM_INSERT_SELECT: +#endif case SQLCOM_UPDATE: case SQLCOM_UPDATE_MULTI: case SQLCOM_DELETE: @@ -4394,6 +4407,7 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) thd->abort_on_warning= 0; break; } +#if 1 case SQLCOM_REPLACE: if ((res= generate_incident_event(thd))) break; @@ -4653,6 +4667,7 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) break; } +#endif case SQLCOM_DROP_SEQUENCE: case SQLCOM_DROP_TABLE: { @@ -7340,6 +7355,7 @@ void THD::reset_for_next_command(bool do_clear_error) get_stmt_da()->reset_for_next_command(); m_sent_row_count= m_examined_row_count= 0; accessed_rows_and_keys= 0; + accessed_rows_and_keys_at_exec_start= 0; reset_slow_query_state(); @@ -7476,6 +7492,8 @@ void create_select_for_variable(THD *thd, LEX_CSTRING *var_name) lex= thd->lex; lex->init_select(); lex->sql_command= SQLCOM_SELECT; + lex->m_sql_cmd= new (thd->mem_root) Sql_cmd_select(thd->lex->result); + /* We set the name of Item to @@session.var_name because that then is used as the column name in the output. diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc index 22780c8..0bbde42 100644 --- a/sql/sql_prepare.cc +++ b/sql/sql_prepare.cc @@ -2268,6 +2268,48 @@ static bool check_prepared_statement(Prepared_statement *stmt) lex->m_sql_cmd->unprepare(thd); break; + case SQLCOM_SELECT: +#if 0 + if (lex->m_sql_cmd == NULL && + !(lex->m_sql_cmd= + new (thd->mem_root) Sql_cmd_select(thd->lex->result))) + { + res= 1; + break; + } +#endif + lex->m_sql_cmd->set_owner(stmt); + res = lex->m_sql_cmd->prepare(thd); + if (res == 2) + { + /* Statement and field info has already been sent */ + DBUG_RETURN(FALSE); + } + if (!res && !lex->describe && !lex->analyze_stmt && !stmt->is_sql_prepare()) + { + SELECT_LEX_UNIT *const unit = &lex->unit; + /* Make copy of item list, as change_columns may change it */ + SELECT_LEX_UNIT* master_unit= unit->first_select()->master_unit(); + bool is_union_op= + master_unit->is_unit_op() || master_unit->fake_select_lex; + + List<Item> fields(is_union_op ? unit->item_list : + lex->first_select_lex()->item_list); + + /* Change columns if a procedure like analyse() */ + res= (unit->last_procedure && + unit->last_procedure->change_columns(thd, fields)); + + if (res || send_prep_stmt(stmt, lex->result->field_count(fields)) || + lex->result->send_result_set_metadata(fields, + Protocol::SEND_EOF) || + thd->protocol->flush()) + res= true; + } + if (!res) + lex->m_sql_cmd->unprepare(thd); + break; + /* The following allow WHERE clause, so they must be tested like SELECT */ case SQLCOM_SHOW_DATABASES: case SQLCOM_SHOW_TABLES: @@ -2285,7 +2327,9 @@ static bool check_prepared_statement(Prepared_statement *stmt) case SQLCOM_SHOW_STATUS_FUNC: case SQLCOM_SHOW_STATUS_PACKAGE: case SQLCOM_SHOW_STATUS_PACKAGE_BODY: +#if 0 case SQLCOM_SELECT: +#endif res= mysql_test_select(stmt, tables); if (res == 2) { @@ -2469,12 +2513,14 @@ static bool check_prepared_statement(Prepared_statement *stmt) lex->describe, lex->analyze_stmt) || send_prep_stmt(stmt, result.field_count(field_list)) || result.send_result_set_metadata(field_list, - Protocol::SEND_EOF); + Protocol::SEND_EOF) || + thd->protocol->flush(); + } + else if (lex->sql_command != SQLCOM_SELECT) + { + res= send_prep_stmt(stmt, 0) || + thd->protocol->flush(); } - else - res= send_prep_stmt(stmt, 0); - if (!res) - thd->protocol->flush(); } DBUG_RETURN(FALSE); } diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 4b01a96..da945d9 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -55,6 +55,9 @@ #include "sql_cte.h" #include "sql_window.h" #include "tztime.h" +#ifdef WITH_WSREP +#include "wsrep_mysqld.h" +#endif #include "debug_sync.h" // DEBUG_SYNC #include <m_ctype.h> @@ -4989,21 +4992,22 @@ void JOIN::cleanup_item_list(List<Item> &items) const 0 otherwise */ -select_handler *find_select_handler(THD *thd, - SELECT_LEX* select_lex) +select_handler *SELECT_LEX::find_select_handler(THD *thd) { - if (select_lex->next_select()) + if (next_select()) return 0; - if (select_lex->master_unit()->outer_select()) + if (master_unit()->outer_select()) return 0; TABLE_LIST *tbl= nullptr; - // For SQLCOM_INSERT_SELECT the server takes TABLE_LIST - // from thd->lex->query_tables and skips its first table - // b/c it is the target table for the INSERT..SELECT. + /* + For SQLCOM_INSERT_SELECT the server takes TABLE_LIST + from thd->lex->query_tables and skips its first table + b/c it is the target table for the INSERT..SELECT. + */ if (thd->lex->sql_command != SQLCOM_INSERT_SELECT) { - tbl= select_lex->join->tables_list; + tbl= join->tables_list; } else if (thd->lex->query_tables && thd->lex->query_tables->next_global) @@ -5020,7 +5024,7 @@ select_handler *find_select_handler(THD *thd, handlerton *ht= tbl->table->file->partition_ht(); if (!ht->create_select) continue; - select_handler *sh= ht->create_select(thd, select_lex); + select_handler *sh= ht->create_select(thd, this); return sh; } return 0; @@ -5136,7 +5140,7 @@ mysql_select(THD *thd, TABLE_LIST *tables, List<Item> &fields, COND *conds, thd->get_stmt_da()->reset_current_row_for_warning(1); /* Look for a table owned by an engine with the select_handler interface */ - select_lex->pushdown_select= find_select_handler(thd, select_lex); + select_lex->pushdown_select= select_lex->find_select_handler(thd); if ((err= join->optimize())) { @@ -12720,7 +12724,8 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, (select thats very heavy) => is a constant here eg: (select avg(order_cost) from orders) => constant but expensive */ - if (!keyuse->val->used_tables() && !thd->lex->describe) + if (keyuse->val->const_item() && !keyuse->val->is_expensive() && + !thd->lex->describe) { // Compare against constant store_key_item tmp(thd, keyinfo->key_part[i].field, @@ -32348,6 +32353,9 @@ static void MYSQL_DML_START(THD *thd) { switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + MYSQL_INSERT_START(thd->query()); + break; case SQLCOM_UPDATE: MYSQL_UPDATE_START(thd->query()); break; @@ -32370,6 +32378,9 @@ static void MYSQL_DML_DONE(THD *thd, int rc) { switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + MYSQL_SELECT_DONE(rc, (rc ? 0 : (ulong) (thd->limit_found_rows))); + break; case SQLCOM_UPDATE: MYSQL_UPDATE_DONE( rc, @@ -32437,8 +32448,6 @@ bool Sql_cmd_dml::prepare(THD *thd) MYSQL_DML_START(thd); - lex->context_analysis_only|= CONTEXT_ANALYSIS_ONLY_DERIVED; - if (open_tables_for_query(thd, lex->query_tables, &table_count, 0, get_dml_prelocking_strategy())) { @@ -32451,8 +32460,6 @@ bool Sql_cmd_dml::prepare(THD *thd) if (prepare_inner(thd)) goto err; - lex->context_analysis_only&= ~CONTEXT_ANALYSIS_ONLY_DERIVED; - set_prepared(); unit->set_prepared(); @@ -32528,6 +32535,7 @@ bool Sql_cmd_dml::execute(THD *thd) { if (lock_tables(thd, lex->query_tables, table_count, 0)) goto err; + query_cache_store_query(thd, thd->lex->query_tables); } unit->set_limit(select_lex); @@ -32581,8 +32589,266 @@ bool Sql_cmd_dml::execute(THD *thd) bool Sql_cmd_dml::execute_inner(THD *thd) { SELECT_LEX_UNIT *unit = &lex->unit; - SELECT_LEX *select_lex= unit->first_select(); - JOIN *join= select_lex->join; + DBUG_ENTER("Sql_cmd_dml::execute_inner"); + + if (unit->is_unit_op() || unit->fake_select_lex) + { + if (unit->exec()) + DBUG_RETURN(true); + } +#if 1 + else + { + SELECT_LEX *select_lex= unit->first_select(); + if (select_lex->exec(thd)) + DBUG_RETURN(true); + } +#endif + + DBUG_RETURN(false); +} + + +bool Sql_cmd_select::precheck(THD *thd) +{ + bool rc= false; + + privilege_t privileges_requested= SELECT_ACL; + + if (lex->exchange) + { + /* + lex->exchange != NULL implies SELECT .. INTO OUTFILE and this + requires FILE_ACL access. + */ + privileges_requested|= FILE_ACL; + } + + TABLE_LIST *tables = thd->lex->query_tables; + + if (tables) + rc= check_table_access(thd, privileges_requested, + tables, false, UINT_MAX, false); + else + rc= check_access(thd, privileges_requested, + any_db.str, NULL, NULL, false, false); + +#ifdef WITH_WSREP + if (lex->sql_command == SQLCOM_SELECT) + { + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_READ); + } + else + { + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_SHOW); +# ifdef ENABLED_PROFILING + if (lex->sql_command == SQLCOM_SHOW_PROFILE) + thd->profiling.discard_current_query(); +# endif + } +#endif /* WITH_WSREP */ + + if (!rc) + return false; + +#ifdef WITH_WSREP +wsrep_error_label: +#endif + return true; +} + + + +bool Sql_cmd_select::prepare_inner(THD *thd) +{ + bool rc= false; + LEX *lex= thd->lex; + TABLE_LIST *tables= lex->query_tables; + SELECT_LEX_UNIT *const unit = &lex->unit; + + DBUG_ENTER("Sql_cmd_select::prepare_inner"); + + if (!thd->stmt_arena->is_stmt_prepare()) + (void) read_statistics_for_tables_if_needed(thd, tables); + + { + if (mysql_handle_derived(lex, DT_INIT)) + DBUG_RETURN(TRUE); + } + + if (thd->stmt_arena->is_stmt_prepare()) + { + if (!result) + { + Query_arena backup; + Query_arena *arena= thd->activate_stmt_arena_if_needed(&backup); + result= new (thd->mem_root) select_send(thd); + if (arena) + thd->restore_active_arena(arena, &backup); + thd->lex->result= result; + } + rc= unit->prepare(unit->derived, 0, 0); + + } + else + { + if (lex->analyze_stmt) + { + if (result && result->result_interceptor()) + result->result_interceptor()->disable_my_ok_calls(); + else + { + DBUG_ASSERT(thd->protocol); + result= new (thd->mem_root) select_send_analyze(thd); + save_protocol= thd->protocol; + thd->protocol= new Protocol_discard(thd); + } + } + else if (!(result= lex->result)) + result= new (thd->mem_root) select_send(thd); + if (!result) + DBUG_RETURN(TRUE); + + SELECT_LEX *parameters = unit->global_parameters(); + if (!parameters->limit_params.explicit_limit) + { + parameters->limit_params.select_limit = + new (thd->mem_root) Item_int(thd, + (ulonglong) thd->variables.select_limit); + if (parameters->limit_params.select_limit == NULL) + DBUG_RETURN(true); /* purecov: inspected */ + } + ulonglong select_options= 0; + if (lex->describe) + select_options|= SELECT_DESCRIBE; + if (unit->is_unit_op() || unit->fake_select_lex) + select_options|= SELECT_NO_UNLOCK; + rc= unit->prepare(unit->derived, result, select_options); + + if (rc && thd->lex->analyze_stmt && save_protocol) + { + delete thd->protocol; + thd->protocol= save_protocol; + } + } + + DBUG_RETURN(rc); +} + + +bool Sql_cmd_select::execute_inner(THD *thd) +{ + DBUG_ENTER("Sql_cmd_select::execute_inner"); + + thd->status_var.last_query_cost= 0.0; + + bool res= Sql_cmd_dml::execute_inner(thd); + + res|= thd->is_error(); + if (unlikely(res)) + result->abort_result_set(); + + if (result != thd->lex->result) + { + delete result; + result= 0; + } + + if (lex->analyze_stmt) + { + if (save_protocol) + { + delete thd->protocol; + thd->protocol= save_protocol; + } + if (!res) + res= thd->lex->explain->send_explain(thd); + } + + if (thd->lex->describe) + { + if (!res) + res= thd->lex->explain->send_explain(thd); + + if (!res && (thd->lex->describe & DESCRIBE_EXTENDED)) + { + char buff[1024]; + String str(buff,(uint32) sizeof(buff), system_charset_info); + str.length(0); + /* + The warnings system requires input in utf8, @see + mysqld_show_warnings(). + */ + lex->unit.print(&str, QT_EXPLAIN_EXTENDED); + push_warning(thd, Sql_condition::WARN_LEVEL_NOTE, + ER_YES, str.c_ptr_safe()); + } + } + + if (unlikely(thd->killed == ABORT_QUERY && !thd->no_errors)) + { + /* + If LIMIT ROWS EXAMINED interrupted query execution, issue a warning, + continue with normal processing and produce an incomplete query result. + */ + bool saved_abort_on_warning= thd->abort_on_warning; + thd->abort_on_warning= false; + push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN, + ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT, + ER_THD(thd, ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT), + thd->accessed_rows_and_keys - + thd->accessed_rows_and_keys_at_exec_start, + thd->lex->limit_rows_examined->val_uint()); + thd->abort_on_warning= saved_abort_on_warning; + thd->reset_killed(); + } + /* Disable LIMIT ROWS EXAMINED after query execution. */ + thd->lex->limit_rows_examined_cnt= ULONGLONG_MAX; + + /* Count number of empty select queries */ + if (!thd->get_sent_row_count() && !res) + status_var_increment(thd->status_var.empty_queries); + else + status_var_add(thd->status_var.rows_sent, thd->get_sent_row_count()); + + DBUG_RETURN(res); +} + + +bool st_select_lex::prepare(THD *thd, select_result *result) +{ + ulonglong select_options= options | thd->variables.option_bits; + + DBUG_ENTER("st_select_lex::prepare"); + + if (thd->lex->describe) + select_options|= SELECT_DESCRIBE; + + if (!(join= new (thd->mem_root) JOIN(thd, item_list, + select_options, result))) + DBUG_RETURN(true); + + SELECT_LEX_UNIT *unit= master_unit(); + + thd->lex->used_tables=0; + + if (join->prepare(table_list.first, where, + order_list.elements + group_list.elements, + order_list.first, false, group_list.first, + having, thd->lex->proc_list.first, + this, unit)) + DBUG_RETURN(true); + + DBUG_RETURN(false); +} + + +bool st_select_lex::exec(THD *thd) +{ + DBUG_ENTER("st_select_lex::exec"); + + /* Look for a table owned by an engine with the select_handler interface */ + pushdown_select= find_select_handler(thd); if (join->optimize()) goto err; @@ -32596,19 +32862,29 @@ bool Sql_cmd_dml::execute_inner(THD *thd) if (unlikely(thd->is_error())) goto err; + thd->get_stmt_da()->reset_current_row_for_warning(1); + + if (master_unit()->outer_select() == NULL) + thd->accessed_rows_and_keys_at_exec_start= thd->accessed_rows_and_keys; + if (join->exec()) goto err; if (thd->lex->describe & DESCRIBE_EXTENDED) { - select_lex->where= join->conds_history; - select_lex->having= join->having_history; + where= join->conds_history; + having= join->having_history; } err: - return join->error; -} + if (pushdown_select) + { + delete pushdown_select; + pushdown_select= NULL; + } + DBUG_RETURN(join->error); +} /** @} (end of group Query_Optimizer) diff --git a/sql/sql_select.h b/sql/sql_select.h index f908484..edbaed3 100644 --- a/sql/sql_select.h +++ b/sql/sql_select.h @@ -33,6 +33,8 @@ #include "records.h" /* READ_RECORD */ #include "opt_range.h" /* SQL_SELECT, QUICK_SELECT_I */ #include "filesort.h" +#include "sql_base.h" +#include "sql_cmd.h" typedef struct st_join_table JOIN_TAB; /* Values in optimize */ @@ -2629,4 +2631,39 @@ void propagate_new_equalities(THD *thd, Item *cond, bool *is_simplifiable_cond); bool dbug_user_var_equals_str(THD *thd, const char *name, const char *value); + + +class Sql_cmd_select : public Sql_cmd_dml +{ +public: + explicit Sql_cmd_select(select_result *result_arg) + : Sql_cmd_dml(), save_protocol(NULL) + { result= result_arg; } + + enum_sql_command sql_command_code() const override + { + return SQLCOM_SELECT; + } + + DML_prelocking_strategy *get_dml_prelocking_strategy() + { + return &dml_prelocking_strategy; + } + +protected: + + bool precheck(THD *thd) override; + + bool prepare_inner(THD *thd) override; + + bool execute_inner(THD *thd) override; + +private: + /* The prelocking strategy used when opening the used tables */ + DML_prelocking_strategy dml_prelocking_strategy; + + Protocol *save_protocol; +}; + + #endif /* SQL_SELECT_INCLUDED */ diff --git a/sql/sql_union.cc b/sql/sql_union.cc index c1f28ba..0cc1e68 100644 --- a/sql/sql_union.cc +++ b/sql/sql_union.cc @@ -1322,6 +1322,24 @@ bool st_select_lex_unit::prepare(TABLE_LIST *derived_arg, describe= additional_options & SELECT_DESCRIBE; + if (describe) + { + for (SELECT_LEX *sl= first_sl; sl; sl= sl->next_select()) + { + sl->set_explain_type(FALSE); + sl->options|= SELECT_DESCRIBE; + } + if (is_unit_op() || fake_select_lex) + { + if (union_needs_tmp_table() && fake_select_lex) + { + fake_select_lex->select_number= FAKE_SELECT_LEX_ID; // just for initialization + fake_select_lex->type= unit_operation_text[common_op()]; + fake_select_lex->options|= SELECT_DESCRIBE; + } + } + } + /* Save fake_select_lex in case we don't need it for anything but global parameters. @@ -2160,6 +2178,8 @@ bool st_select_lex_unit::exec() bool was_executed= executed; DBUG_ENTER("st_select_lex_unit::exec"); + describe= thd->lex->describe; + if (executed && !uncacheable && !describe) DBUG_RETURN(FALSE); executed= 1; @@ -2168,6 +2188,9 @@ bool st_select_lex_unit::exec() item->make_const(); saved_error= optimize(); + + if (outer_select() == NULL) + thd->accessed_rows_and_keys_at_exec_start= thd->accessed_rows_and_keys; create_explain_query_if_not_exists(thd->lex, thd->mem_root); @@ -2239,6 +2262,7 @@ bool st_select_lex_unit::exec() saved_error= sl->join->optimize(); } } + if (likely(!saved_error)) { records_at_start= table->file->stats.records; diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy index 49655f8..886c0b6 100644 --- a/sql/sql_yacc.yy +++ b/sql/sql_yacc.yy @@ -71,6 +71,7 @@ #include "json_table.h" #include "sql_update.h" #include "sql_delete.h" +#include "sql_insert.h" /* this is to get the bison compilation windows warnings out */ #ifdef _MSC_VER

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[Commits] a735c1a: MDEV-30539 EXPLAIN EXTENDED: no message with queries for DML statements
by IgorBabaev 23 Mar '23

23 Mar '23

revision-id: a735c1a37ee997624eba5b8cf3b10da76f61dfc7 (mariadb-10.4.27-113-ga735c1a) parent(s): ccec9b1de95a66b7597bc30e0a60bd61866f225d author: Igor Babaev committer: Igor Babaev timestamp: 2023-03-22 20:12:59 -0700 message: MDEV-30539 EXPLAIN EXTENDED: no message with queries for DML statements EXPLAIN EXTENDED for an UPDATE/DELETE/INSERT/REPLACE statement did not produce the warning containing the text representation of the query obtained after the optimization phase. Such warning was produced for SELECT statements, but not for DML statements. The patch fixes this defect of EXPLAIN EXTENDED for DML statements. --- mysql-test/include/explain_non_select.inc | 16 + mysql-test/main/explain_non_select.result | 4 + mysql-test/main/multi_update.result | 2 +- mysql-test/main/multi_update.test | 2 +- .../main/myisam_explain_non_select_all.result | 193 ++++++++++++ mysql-test/main/opt_trace.result | 2 +- mysql-test/main/ps.result | 4 + sql/sql_delete.cc | 2 + sql/sql_explain.cc | 19 +- sql/sql_explain.h | 2 +- sql/sql_insert.cc | 6 +- sql/sql_lex.cc | 2 + sql/sql_lex.h | 6 + sql/sql_parse.cc | 20 +- sql/sql_select.cc | 326 ++++++++++++++++++--- sql/sql_update.cc | 10 +- sql/table.h | 2 + 17 files changed, 561 insertions(+), 57 deletions(-) diff --git a/mysql-test/include/explain_non_select.inc b/mysql-test/include/explain_non_select.inc index d22310c..bd0962d 100644 --- a/mysql-test/include/explain_non_select.inc +++ b/mysql-test/include/explain_non_select.inc @@ -788,6 +788,22 @@ INSERT INTO t1 VALUES (1), (2), (3), (4), (5); DROP TABLE t1; +--echo #75 + +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +--let $query = INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +--source include/explain_utils.inc +DROP TABLE t1; + +--echo #76 + +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +CREATE TABLE t2 (a INT, b INT); +INSERT INTO t2 VALUES (1,10), (3,10), (7,11), (3,11); +--let $query = INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +--source include/explain_utils.inc +DROP TABLE t1,t2; + --echo # --echo # Bug #12949629: CLIENT LOSES CONNECTION AFTER EXECUTING A PROCEDURE WITH --echo # EXPLAIN UPDATE/DEL/INS diff --git a/mysql-test/main/explain_non_select.result b/mysql-test/main/explain_non_select.result index 111b4c8..d60f10f 100644 --- a/mysql-test/main/explain_non_select.result +++ b/mysql-test/main/explain_non_select.result @@ -157,9 +157,13 @@ id select_type table partitions type possible_keys key key_len ref rows Extra explain extended update t2 set b=3 where a in (3,4); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`b` = 3 where `test`.`t2`.`a` in (3,4) explain extended delete from t2 where a in (3,4); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`a` in (3,4) drop table t1,t2; # # Check the special case where partition pruning removed all partitions diff --git a/mysql-test/main/multi_update.result b/mysql-test/main/multi_update.result index d6cf9ba..222c592 100644 --- a/mysql-test/main/multi_update.result +++ b/mysql-test/main/multi_update.result @@ -1253,7 +1253,7 @@ EXPLAIN DROP TABLES t1, t2; # End of 10.3 tests # -# MDEV-28538: multi-table UPDATE/DELETE with possible exists-to-in +# MDEV-30538: multi-table UPDATE/DELETE with possible exists-to-in # create table t1 (c1 int, c2 int, c3 int, index idx(c2)); insert into t1 values diff --git a/mysql-test/main/multi_update.test b/mysql-test/main/multi_update.test index 48e6250..329394e 100644 --- a/mysql-test/main/multi_update.test +++ b/mysql-test/main/multi_update.test @@ -1134,7 +1134,7 @@ DROP TABLES t1, t2; --echo # End of 10.3 tests --echo # ---echo # MDEV-28538: multi-table UPDATE/DELETE with possible exists-to-in +--echo # MDEV-30538: multi-table UPDATE/DELETE with possible exists-to-in --echo # create table t1 (c1 int, c2 int, c3 int, index idx(c2)); diff --git a/mysql-test/main/myisam_explain_non_select_all.result b/mysql-test/main/myisam_explain_non_select_all.result index 7f24cb4..3ca9629 100644 --- a/mysql-test/main/myisam_explain_non_select_all.result +++ b/mysql-test/main/myisam_explain_non_select_all.result @@ -17,6 +17,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a < 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = 10 where `test`.`t1`.`a` < 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -60,6 +62,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a < 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` < 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -103,6 +107,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 USING t1 WHERE a = 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t1` where `test`.`t1`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -150,6 +156,8 @@ EXPLAIN EXTENDED UPDATE t1, t2 SET t1.a = 10 WHERE t1.a = 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 update `test`.`t1` join `test`.`t2` set `test`.`t1`.`a` = 10 where `test`.`t1`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -200,6 +208,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = 10 where `test`.`t11`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -248,6 +258,8 @@ EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE 1 IN (SELECT 1 FROM t2 WHERE id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(1,<exists>(/* select#2 */ select 1 from `test`.`t2` where `test`.`t2`.`b` < 3 and 1)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -300,6 +312,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`b` from `test`.`t2` where `test`.`t1`.`a` < 3 and <cache>(`test`.`t1`.`a`) = `test`.`t2`.`b`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -353,6 +366,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` semi join (`test`.`t2`) join `test`.`t2` set `test`.`t1`.`a` = 10 where `test`.`t2`.`b` < 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -405,6 +420,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = `test`.`t11`.`a` + 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -457,6 +474,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> system NULL NULL NULL NULL 1 100.00 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` set `test`.`t11`.`a` = `test`.`t11`.`a` + 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -511,6 +530,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = 10 where `test`.`t11`.`a` > 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -555,6 +576,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a > 1 LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 1 limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -598,6 +621,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` where 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -638,6 +663,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 USING t1 WHERE 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t1` where 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -678,6 +705,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a = 3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range a a 5 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` = 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 5 @@ -719,6 +748,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a < 3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range a a 5 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` < 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 5 @@ -758,6 +789,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 0 order by `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -797,6 +830,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 0 order by `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -840,6 +875,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE (@a:= a) ORDER BY a LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 index NULL PRIMARY 4 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where @a:=`test`.`t1`.`a` order by `test`.`t1`.`a` limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -884,6 +921,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 ORDER BY a ASC, b ASC LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 Using filesort +Warnings: +Note 1003 delete from `test`.`t1` order by `test`.`t1`.`a`,`test`.`t1`.`b` limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -941,6 +980,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 100.00 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 8 test.t2.b2,test.t1.b1 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1`,`test`.`t2`,`test`.`t3` using `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a2` = `test`.`t1`.`a1` and `test`.`t3`.`a3` = `test`.`t2`.`b2` and `test`.`t3`.`b3` = `test`.`t1`.`b1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 13 @@ -993,6 +1034,8 @@ EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a IN (SELECT a FROM t2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where <cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1043,6 +1086,8 @@ EXPLAIN EXTENDED DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,<exists>(/* select#2 */ select `test`.`t2`.`a2` from `test`.`t2` where `test`.`t2`.`a2` > 2 and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`a2`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1088,6 +1133,8 @@ EXPLAIN EXTENDED DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,<exists>(/* select#2 */ select `test`.`t2`.`a2` from `test`.`t2` where `test`.`t2`.`a2` > 2 and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`a2`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1132,6 +1179,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`i` = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -1175,6 +1224,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL 5 NULL Deleting all rows +Warnings: +Note 1003 delete from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -1221,6 +1272,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1267,6 +1320,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO t2 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 insert into `test`.`t2` select `test`.`t1`.`i` AS `i` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1311,6 +1366,8 @@ FLUSH TABLES; EXPLAIN EXTENDED REPLACE INTO t2 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 replace into `test`.`t2` select `test`.`t1`.`i` AS `i` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1351,6 +1408,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1`(i) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -1374,6 +1433,8 @@ FLUSH TABLES; EXPLAIN EXTENDED REPLACE INTO t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 replace into `test`.`t1`(i) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -1402,6 +1463,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`i` > 10 and `test`.`t1`.`i` <= 18 order by `test`.`t1`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1447,6 +1510,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`i` > 10 and `test`.`t1`.`i` <= 18 order by `test`.`t1`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1500,6 +1565,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1554,6 +1621,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1603,6 +1672,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1657,6 +1728,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1712,6 +1785,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index_merge key1,key2 key1,key2 5,5 NULL 7 100.00 Using sort_union(key1,key2); Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`key1` < 13 or `test`.`t2`.`key2` < 14 order by `test`.`t2`.`key1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1765,6 +1840,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1812,6 +1889,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 ORDER BY a, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using filesort +Warnings: +Note 1003 delete from `test`.`t2` order by `test`.`t2`.`a`,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1866,6 +1945,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 ORDER BY a DESC, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 6 NULL 5 100.00 +Warnings: +Note 1003 delete from `test`.`t2` order by `test`.`t2`.`a` desc,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1915,6 +1996,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1963,6 +2046,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -2017,6 +2102,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2072,6 +2159,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2122,6 +2211,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2176,6 +2267,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2231,6 +2324,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET i = 123 WHERE key1 < 13 or key2 < 14 ORDER BY key1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index_merge key1,key2 key1,key2 5,5 NULL 7 100.00 Using sort_union(key1,key2); Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`i` = 123 where `test`.`t2`.`key1` < 13 or `test`.`t2`.`key2` < 14 order by `test`.`t2`.`key1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2284,6 +2379,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -2332,6 +2429,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET c = 10 ORDER BY a, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`c` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2387,6 +2486,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET c = 10 ORDER BY a DESC, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 6 NULL 5 100.00 Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`c` = 10 order by `test`.`t2`.`a` desc,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2439,6 +2540,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET c2 = 0 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range c1_idx c1_idx 2 NULL 2 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`c2` = 0 where `test`.`t1`.`c1_idx` = 'y' order by `test`.`t1`.`pk` desc limit 2 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2485,6 +2588,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range c1_idx c1_idx 2 NULL 2 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`c1_idx` = 'y' order by `test`.`t1`.`pk` desc limit 2 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2534,6 +2639,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+10 WHERE a > 34; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 10 where `test`.`t1`.`a` > 34 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -2581,6 +2688,8 @@ EXPLAIN EXTENDED UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 system NULL NULL NULL NULL 0 0.00 Const row not found 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` set NULL = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2624,6 +2733,8 @@ EXPLAIN EXTENDED UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10 W id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 system NULL NULL NULL NULL 0 0.00 Const row not found 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` set NULL = 10 where `test`.`t1`.`c3` = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2676,6 +2787,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ALL IDX NULL NULL NULL 2 100.00 Using where Warnings: Note 1276 Field or reference 'test.t1.f1' of SELECT #2 was resolved in SELECT #1 +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`f2` = (/* select#2 */ select max(`test`.`t2`.`f4`) from `test`.`t2` where `test`.`t2`.`f3` = `test`.`t1`.`f1`) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2747,6 +2859,8 @@ EXPLAIN EXTENDED UPDATE v1 SET a = 1 WHERE a > 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t11 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t12 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` `t11` join `test`.`t1` `t12` set `test`.`t11`.`a` = 1 where `test`.`t11`.`a` > 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -2792,6 +2906,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 1 SIMPLE t11 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t12 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` join `test`.`t1` `t11` join `test`.`t1` `t12` set `test`.`t11`.`a` = 1 where `test`.`t11`.`a` = `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -2841,6 +2957,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM v1 WHERE a < 4; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where `test`.`t1`.`a` < 4 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -2892,6 +3010,8 @@ EXPLAIN EXTENDED DELETE v1 FROM t2, v1 WHERE t2.x = v1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 Using where 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.x 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t2` join `test`.`t1` where `test`.`t1`.`a` = `test`.`t2`.`x` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2943,6 +3063,8 @@ EXPLAIN EXTENDED DELETE v1 FROM t2, v1 WHERE t2.x = v1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 Using where 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.x 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t2` join `test`.`t1` where `test`.`t1`.`a` = `test`.`t2`.`x` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2987,6 +3109,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO v1 VALUES (10); id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1`(x) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -3027,6 +3151,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO v1 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 system NULL NULL NULL NULL 0 0.00 Const row not found +Warnings: +Note 1003 insert into `test`.`t2`(x) /* select#1 */ select NULL AS `a` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3084,6 +3210,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where 2 DEPENDENT SUBQUERY <derived3> index_subquery key0 key0 5 func 2 100.00 3 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in (temporary) on key0))) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3140,6 +3268,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 3 100.00 3 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` semi join ((/* select#3 */ select `test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`b` limit 2,2) `x`) join `test`.`t2` set `test`.`t1`.`a` = 10 where 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3198,6 +3328,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 3 100.00 4 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` semi join ((/* select#4 */ select `test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`b` limit 2,2) `x`) join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `y` set `test`.`t1`.`a` = 10 where 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3248,6 +3380,8 @@ JOIN t1 AS a12 ON a12.c1 = a11.c1 id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) DROP TABLE t1, t2, t3; #73 CREATE TABLE t1 (id INT); @@ -3276,6 +3410,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+1 WHERE a>10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 1 where `test`.`t1`.`a` > 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -3315,6 +3451,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+1 WHERE a>10 ORDER BY a+20; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 1 where `test`.`t1`.`a` > 10 order by `test`.`t1`.`a` + 20 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -3341,6 +3479,61 @@ Handler_read_key 4 Sort_range 1 DROP TABLE t1; +#75 +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +# +# query: INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +# select: +# +EXPLAIN INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows Extra +1 INSERT t1 ALL NULL NULL NULL NULL NULL NULL +FLUSH STATUS; +FLUSH TABLES; +EXPLAIN EXTENDED INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1` values (3,10),(7,11),(3,11) on duplicate key update `test`.`t1`.`id` = last_insert_id(`test`.`t1`.`id`) +# Status of EXPLAIN EXTENDED query +Variable_name Value +Handler_read_key 4 +# Status of testing query execution: +Variable_name Value +Handler_read_key 4 +Handler_read_rnd 1 +Handler_write 3 + +DROP TABLE t1; +#76 +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +CREATE TABLE t2 (a INT, b INT); +INSERT INTO t2 VALUES (1,10), (3,10), (7,11), (3,11); +# +# query: INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +# select: +# +EXPLAIN INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 4 +FLUSH STATUS; +FLUSH TABLES; +EXPLAIN EXTENDED INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 +Warnings: +Note 1003 insert into `test`.`t1` select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` on duplicate key update `test`.`t1`.`id` = last_insert_id(`test`.`t1`.`id`) +# Status of EXPLAIN EXTENDED query +Variable_name Value +Handler_read_key 7 +# Status of testing query execution: +Variable_name Value +Handler_read_key 7 +Handler_read_rnd 1 +Handler_read_rnd_next 5 +Handler_write 4 + +DROP TABLE t1,t2; # # Bug #12949629: CLIENT LOSES CONNECTION AFTER EXECUTING A PROCEDURE WITH # EXPLAIN UPDATE/DEL/INS diff --git a/mysql-test/main/opt_trace.result b/mysql-test/main/opt_trace.result index a343d59..a8b391f 100644 --- a/mysql-test/main/opt_trace.result +++ b/mysql-test/main/opt_trace.result @@ -3766,7 +3766,7 @@ explain delete t0,t1 from t0, t1 where t0.a=t1.a and t1.a<3 { "select_id": 1, "steps": [ { - "expanded_query": "select NULL AS `NULL` from t0 join t1 where t0.a = t1.a and t1.a < 3" + "expanded_query": "delete from t0,t1 using t0 join t1 where t0.a = t1.a and t1.a < 3" } ] } diff --git a/mysql-test/main/ps.result b/mysql-test/main/ps.result index 673b18c..408b1ec 100644 --- a/mysql-test/main/ps.result +++ b/mysql-test/main/ps.result @@ -5566,11 +5566,15 @@ EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 F id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) PREPARE stmt FROM "EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 FROM t1 AS a11 STRAIGHT_JOIN t2 AS a21 ON a21.c2 = a11.c1 JOIN t1 AS a12 ON a12.c1 = a11.c1 ) d1 )"; EXECUTE stmt; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) DEALLOCATE PREPARE stmt; DROP TABLE t1, t2, t3; # diff --git a/sql/sql_delete.cc b/sql/sql_delete.cc index 1b3fa30..776dfff 100644 --- a/sql/sql_delete.cc +++ b/sql/sql_delete.cc @@ -1084,6 +1084,8 @@ int mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, DBUG_RETURN(TRUE); select_lex->fix_prepare_information(thd, conds, &fake_conds); + if (!thd->lex->upd_del_where) + thd->lex->upd_del_where= *conds; DBUG_RETURN(FALSE); } diff --git a/sql/sql_explain.cc b/sql/sql_explain.cc index 70e3009..6b76db8 100644 --- a/sql/sql_explain.cc +++ b/sql/sql_explain.cc @@ -161,7 +161,7 @@ void Explain_query::query_plan_ready() Send EXPLAIN output to the client. */ -int Explain_query::send_explain(THD *thd) +int Explain_query::send_explain(THD *thd, bool extended) { select_result *result; LEX *lex= thd->lex; @@ -174,8 +174,22 @@ int Explain_query::send_explain(THD *thd) if (thd->lex->explain_json) print_explain_json(result, thd->lex->analyze_stmt); else + { res= print_explain(result, lex->describe, thd->lex->analyze_stmt); - + if (extended) + { + char buff[1024]; + String str(buff,(uint32) sizeof(buff), system_charset_info); + str.length(0); + /* + The warnings system requires input in utf8, @see + mysqld_show_warnings(). + */ + lex->unit.print(&str, QT_EXPLAIN_EXTENDED); + push_warning(thd, Sql_condition::WARN_LEVEL_NOTE, + ER_YES, str.c_ptr_safe()); + } + } if (res) result->abort_result_set(); else @@ -185,6 +199,7 @@ int Explain_query::send_explain(THD *thd) } + /* The main entry point to print EXPLAIN of the entire query */ diff --git a/sql/sql_explain.h b/sql/sql_explain.h index 7b5042b..3add404 100644 --- a/sql/sql_explain.h +++ b/sql/sql_explain.h @@ -474,7 +474,7 @@ class Explain_query : public Sql_alloc bool is_analyze); /* Send tabular EXPLAIN to the client */ - int send_explain(THD *thd); + int send_explain(THD *thd, bool extended); /* Return tabular EXPLAIN output as a text string */ bool print_explain_str(THD *thd, String *out_str, bool is_analyze); diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc index f31c9ea..9a76061 100644 --- a/sql/sql_insert.cc +++ b/sql/sql_insert.cc @@ -827,7 +827,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list, save_insert_query_plan(thd, table_list); if (thd->lex->describe) { - retval= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + retval= thd->lex->explain->send_explain(thd, extended); goto abort; } @@ -1250,7 +1251,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list, goto abort; if (thd->lex->analyze_stmt) { - retval= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + retval= thd->lex->explain->send_explain(thd, extended); goto abort; } DBUG_PRINT("info", ("touched: %llu copied: %llu updated: %llu deleted: %llu", diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index e14d9f7..e7689a9 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -780,6 +780,8 @@ void LEX::start(THD *thd_arg) frame_bottom_bound= NULL; win_spec= NULL; + upd_del_where= NULL; + vers_conditions.empty(); period_conditions.empty(); diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 769b1750..6170637 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -1417,6 +1417,10 @@ class st_select_lex: public st_select_lex_node } bool setup_ref_array(THD *thd, uint order_group_num); void print(THD *thd, String *str, enum_query_type query_type); + void print_item_list(THD *thd, String *str, enum_query_type query_type); + void print_set_clause(THD *thd, String *str, enum_query_type query_type); + void print_on_duplicate_key_clause(THD *thd, String *str, + enum_query_type query_type); static void print_order(String *str, ORDER *order, enum_query_type query_type); @@ -3493,6 +3497,8 @@ struct LEX: public Query_tables_list Window_frame_bound *frame_bottom_bound; Window_spec *win_spec; + Item *upd_del_where; + /* System Versioning */ vers_select_conds_t vers_conditions; vers_select_conds_t period_conditions; diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 1f1962a..c495ae2 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -4744,7 +4744,10 @@ mysql_execute_command(THD *thd) } if (!res && (explain || lex->analyze_stmt)) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } /* revert changes for SP */ MYSQL_INSERT_SELECT_DONE(res, (ulong) thd->get_row_count_func()); @@ -4813,7 +4816,10 @@ mysql_execute_command(THD *thd) if (thd->lex->analyze_stmt || thd->lex->describe) { if (!res) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } delete sel_result; @@ -4875,7 +4881,10 @@ mysql_execute_command(THD *thd) else { if (lex->describe || lex->analyze_stmt) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } multi_delete_error: delete result; @@ -6463,7 +6472,10 @@ static bool execute_sqlcom_select(THD *thd, TABLE_LIST *all_tables) thd->protocol= save_protocol; } if (!res) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } } } diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 2c12d1c..c4fc2d1 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -305,6 +305,9 @@ static Item **get_sargable_cond(JOIN *join, TABLE *table); bool is_eq_cond_injected_for_split_opt(Item_func_eq *eq_item); +void print_list_item(String *str, List_item *list, + enum_query_type query_type); + #ifndef DBUG_OFF /* @@ -27981,6 +27984,162 @@ void TABLE_LIST::print(THD *thd, table_map eliminated_tables, String *str, } } +enum explainable_cmd_type +{ + SELECT_CMD, INSERT_CMD, REPLACE_CMD, UPDATE_CMD, DELETE_CMD, NO_CMD +}; + +static +const char * const explainable_cmd_name []= +{ + "select ", + "insert ", + "replace ", + "update ", + "delete ", +}; + +static +char const *get_explainable_cmd_name(enum explainable_cmd_type cmd) +{ + return explainable_cmd_name[cmd]; +} + +static +enum explainable_cmd_type get_explainable_cmd_type(THD *thd) +{ + switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + return SELECT_CMD; + case SQLCOM_INSERT: + case SQLCOM_INSERT_SELECT: + return INSERT_CMD; + case SQLCOM_REPLACE: + case SQLCOM_REPLACE_SELECT: + return REPLACE_CMD; + case SQLCOM_UPDATE: + case SQLCOM_UPDATE_MULTI: + return UPDATE_CMD; + case SQLCOM_DELETE: + case SQLCOM_DELETE_MULTI: + return DELETE_CMD; + default: + return SELECT_CMD; + } +} + + +void TABLE_LIST::print_leaf_tables(THD *thd, String *str, + enum_query_type query_type) +{ + if (merge_underlying_list) + { + for (TABLE_LIST *tbl= merge_underlying_list; tbl; tbl= tbl->next_local) + tbl->print_leaf_tables(thd, str, query_type); + } + else + print(thd, 0, str, query_type); +} + + +void st_select_lex::print_item_list(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + /* + outer_select() can not be used here because it is for name resolution + and will return NULL at any end of name resolution chain (view/derived) + */ + bool top_level= (get_master()->get_master() == 0); + List_iterator_fast<Item> it(item_list); + Item *item; + while ((item= it++)) + { + if (first) + first= 0; + else + str->append(','); + + if ((is_subquery_function() && item->is_autogenerated_name) || + !item->name.str) + { + /* + Do not print auto-generated aliases in subqueries. It has no purpose + in a view definition or other contexts where the query is printed. + */ + item->print(str, query_type); + } + else + { + /* + Do not print illegal names (if it is not top level SELECT). + Top level view checked (and correct name are assigned), + other cases of top level SELECT are not important, because + it is not "table field". + */ + if (top_level || + !item->is_autogenerated_name || + !check_column_name(item->name.str)) + item->print_item_w_name(str, query_type); + else + item->print(str, query_type); + } + } +} + + +void st_select_lex::print_set_clause(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + /* + outer_select() can not be used here because it is for name resolution + and will return NULL at any end of name resolution chain (view/derived) + */ + List_iterator_fast<Item> it(item_list); + List_iterator_fast<Item> vt(thd->lex->value_list); + Item *item; + Item *val; + while ((item= it++, val= vt++ )) + { + if (first) + { + str->append(STRING_WITH_LEN(" set ")); + first= 0; + } + else + str->append(','); + + item->print(str, query_type); + str->append(STRING_WITH_LEN(" = ")); + val->print(str, query_type); + } +} + + +void st_select_lex::print_on_duplicate_key_clause(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + List_iterator_fast<Item> it(thd->lex->update_list); + List_iterator_fast<Item> vt(thd->lex->value_list); + Item *item; + Item *val; + while ((item= it++, val= vt++ )) + { + if (first) + { + str->append(STRING_WITH_LEN(" on duplicate key update ")); + first= 0; + } + else + str->append(','); + + item->print(str, query_type); + str->append(STRING_WITH_LEN(" = ")); + val->print(str, query_type); + } +} void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) { @@ -27998,6 +28157,61 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) return; } + bool top_level= (get_master()->get_master() == 0); + enum explainable_cmd_type sel_type= SELECT_CMD; + if (top_level) + sel_type= get_explainable_cmd_type(thd); + + if (sel_type == INSERT_CMD || sel_type == REPLACE_CMD) + { + str->append(get_explainable_cmd_name(sel_type)); + str->append(STRING_WITH_LEN("into ")); + TABLE_LIST *tbl= thd->lex->query_tables; + while (tbl->merge_underlying_list) + tbl= tbl->merge_underlying_list; + tbl->print(thd, 0, str, query_type); + if (thd->lex->field_list.elements) + { + str->append ('('); + List_iterator_fast<Item> it(thd->lex->field_list); + Item *item; + bool first= true; + while ((item= it++)) + { + if (first) + first= false; + else + str->append(','); + str->append(item->name); + } + str->append(')'); + } + + str->append(' '); + + if (thd->lex->sql_command == SQLCOM_INSERT || + thd->lex->sql_command == SQLCOM_REPLACE) + { + str->append(STRING_WITH_LEN("values ")); + bool is_first_elem= true; + List_iterator_fast<List_item> li(thd->lex->many_values); + List_item *list; + + while ((list= li++)) + { + if (is_first_elem) + is_first_elem= false; + else + str->append(','); + + print_list_item(str, list, query_type); + } + if (thd->lex->update_list.elements) + print_on_duplicate_key_clause(thd, str, query_type); + return; + } + } + if ((query_type & QT_SHOW_SELECT_NUMBER) && thd->lex->all_selects_list && thd->lex->all_selects_list->link_next && @@ -28021,7 +28235,10 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) str->append(" */ "); } - str->append(STRING_WITH_LEN("select ")); + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) + str->append(STRING_WITH_LEN("select ")); if (join && join->cleaned) { @@ -28067,57 +28284,66 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) } //Item List - bool first= 1; + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) + print_item_list(thd, str, query_type); /* - outer_select() can not be used here because it is for name resolution - and will return NULL at any end of name resolution chain (view/derived) + from clause + TODO: support USING/FORCE/IGNORE index */ - bool top_level= (get_master()->get_master() == 0); - List_iterator_fast<Item> it(item_list); - Item *item; - while ((item= it++)) + if (table_list.elements) { - if (first) - first= 0; - else - str->append(','); - - if ((is_subquery_function() && item->is_autogenerated_name) || - !item->name.str) + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) { - /* - Do not print auto-generated aliases in subqueries. It has no purpose - in a view definition or other contexts where the query is printed. - */ - item->print(str, query_type); + str->append(STRING_WITH_LEN(" from ")); + /* go through join tree */ + print_join(thd, join? join->eliminated_tables: 0, str, &top_join_list, + query_type); } - else + if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + str->append(STRING_WITH_LEN(get_explainable_cmd_name(sel_type))); + if (sel_type == DELETE_CMD) { - /* - Do not print illegal names (if it is not top level SELECT). - Top level view checked (and correct name are assigned), - other cases of top level SELECT are not important, because - it is not "table field". - */ - if (top_level || - !item->is_autogenerated_name || - !check_column_name(item->name.str)) - item->print_item_w_name(str, query_type); + str->append(STRING_WITH_LEN(" from ")); + bool first= true; + for (TABLE_LIST *target_tbl= thd->lex->auxiliary_table_list.first; + target_tbl; + target_tbl= target_tbl->next_local) + { + if (first) + first= false; + else + str->append(','); + target_tbl->correspondent_table->print_leaf_tables(thd, str, + query_type); + } + + if (!first) + str->append(STRING_WITH_LEN(" using ")); + } + if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + { + if (join) + print_join(thd, 0, str, &top_join_list, query_type); else - item->print(str, query_type); + { + bool first= true; + List_iterator_fast<TABLE_LIST> li(leaf_tables); + TABLE_LIST *tbl; + while ((tbl= li++)) + { + if (first) + first= false; + else + str->append(','); + tbl->print(thd, 0, str, query_type); + } + } } } - - /* - from clause - TODO: support USING/FORCE/IGNORE index - */ - if (table_list.elements) - { - str->append(STRING_WITH_LEN(" from ")); - /* go through join tree */ - print_join(thd, join? join->eliminated_tables: 0, str, &top_join_list, query_type); - } else if (where) { /* @@ -28127,10 +28353,15 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) str->append(STRING_WITH_LEN(" from DUAL ")); } + if (sel_type == UPDATE_CMD) + print_set_clause(thd, str, query_type); + // Where Item *cur_where= where; if (join) cur_where= join->conds; + else if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + cur_where= thd->lex->upd_del_where; if (cur_where || cond_value != Item::COND_UNDEF) { str->append(STRING_WITH_LEN(" where ")); @@ -28187,6 +28418,15 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) else if (lock_type == TL_WRITE) str->append(" for update"); + if ((sel_type == INSERT_CMD || sel_type == REPLACE_CMD) && + thd->lex->update_list.elements) + print_on_duplicate_key_clause(thd, str, query_type); + + // returning clause + if (sel_type == DELETE_CMD && !item_list.elements) + { + print_item_list(thd, str, query_type); + } // PROCEDURE unsupported here } diff --git a/sql/sql_update.cc b/sql/sql_update.cc index a298071..834fa61 100644 --- a/sql/sql_update.cc +++ b/sql/sql_update.cc @@ -1371,7 +1371,8 @@ int mysql_update(THD *thd, goto err; emit_explain_and_leave: - int err2= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + int err2= thd->lex->explain->send_explain(thd, extended); delete select; free_underlaid_joins(thd, select_lex); @@ -1445,6 +1446,8 @@ bool mysql_prepare_update(THD *thd, TABLE_LIST *table_list, select_lex->fix_prepare_information(thd, conds, &fake_conds); + if (!thd->lex->upd_del_where) + thd->lex->upd_del_where= *conds; DBUG_RETURN(FALSE); } @@ -1974,7 +1977,10 @@ bool mysql_multi_update(THD *thd, TABLE_LIST *table_list, List<Item> *fields, else { if (thd->lex->describe || thd->lex->analyze_stmt) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } thd->abort_on_warning= 0; DBUG_RETURN(res); diff --git a/sql/table.h b/sql/table.h index c4b0d78..6f7f4e6 100644 --- a/sql/table.h +++ b/sql/table.h @@ -2708,6 +2708,8 @@ struct TABLE_LIST } void print(THD *thd, table_map eliminated_tables, String *str, enum_query_type query_type); + void print_leaf_tables(THD *thd, String *str, + enum_query_type query_type); bool check_single_table(TABLE_LIST **table, table_map map, TABLE_LIST *view); bool set_insert_values(MEM_ROOT *mem_root);

1 0

[Commits] f094464: MDEV-30539 EXPLAIN EXTENDED: no message with queries for DML statements
by IgorBabaev 23 Mar '23

23 Mar '23

revision-id: f094464dfb0a8a8bf18b414b8674e7547e9210b6 (mariadb-10.4.27-113-gf094464) parent(s): ccec9b1de95a66b7597bc30e0a60bd61866f225d author: Igor Babaev committer: Igor Babaev timestamp: 2023-03-22 19:54:41 -0700 message: MDEV-30539 EXPLAIN EXTENDED: no message with queries for DML statements EXPLAIN EXTENDED for an UPDATE/DELETE/INSERT/REPLACE statement did not produce the warning containing the text representation of the query obtained after the optimization phase. Such warning was produced for SELECT statements, but not for DML statements. The patch fixes this defect of EXPLAIN EXTENDED for DML statements. --- mysql-test/include/explain_non_select.inc | 16 + mysql-test/main/explain_non_select.result | 4 + mysql-test/main/multi_update.result | 2 +- mysql-test/main/multi_update.test | 2 +- .../main/myisam_explain_non_select_all.result | 193 ++++++++++++ mysql-test/main/opt_trace.result | 2 +- mysql-test/main/ps.result | 4 + sql/sql_delete.cc | 2 + sql/sql_explain.cc | 19 +- sql/sql_explain.h | 2 +- sql/sql_insert.cc | 6 +- sql/sql_lex.cc | 2 + sql/sql_lex.h | 6 + sql/sql_parse.cc | 20 +- sql/sql_select.cc | 326 ++++++++++++++++++--- sql/sql_update.cc | 10 +- sql/table.h | 2 + 17 files changed, 561 insertions(+), 57 deletions(-) diff --git a/mysql-test/include/explain_non_select.inc b/mysql-test/include/explain_non_select.inc index d22310c..bd0962d 100644 --- a/mysql-test/include/explain_non_select.inc +++ b/mysql-test/include/explain_non_select.inc @@ -788,6 +788,22 @@ INSERT INTO t1 VALUES (1), (2), (3), (4), (5); DROP TABLE t1; +--echo #75 + +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +--let $query = INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +--source include/explain_utils.inc +DROP TABLE t1; + +--echo #76 + +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +CREATE TABLE t2 (a INT, b INT); +INSERT INTO t2 VALUES (1,10), (3,10), (7,11), (3,11); +--let $query = INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +--source include/explain_utils.inc +DROP TABLE t1,t2; + --echo # --echo # Bug #12949629: CLIENT LOSES CONNECTION AFTER EXECUTING A PROCEDURE WITH --echo # EXPLAIN UPDATE/DEL/INS diff --git a/mysql-test/main/explain_non_select.result b/mysql-test/main/explain_non_select.result index 111b4c8..d60f10f 100644 --- a/mysql-test/main/explain_non_select.result +++ b/mysql-test/main/explain_non_select.result @@ -157,9 +157,13 @@ id select_type table partitions type possible_keys key key_len ref rows Extra explain extended update t2 set b=3 where a in (3,4); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`b` = 3 where `test`.`t2`.`a` in (3,4) explain extended delete from t2 where a in (3,4); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`a` in (3,4) drop table t1,t2; # # Check the special case where partition pruning removed all partitions diff --git a/mysql-test/main/multi_update.result b/mysql-test/main/multi_update.result index d6cf9ba..222c592 100644 --- a/mysql-test/main/multi_update.result +++ b/mysql-test/main/multi_update.result @@ -1253,7 +1253,7 @@ EXPLAIN DROP TABLES t1, t2; # End of 10.3 tests # -# MDEV-28538: multi-table UPDATE/DELETE with possible exists-to-in +# MDEV-30538: multi-table UPDATE/DELETE with possible exists-to-in # create table t1 (c1 int, c2 int, c3 int, index idx(c2)); insert into t1 values diff --git a/mysql-test/main/multi_update.test b/mysql-test/main/multi_update.test index 48e6250..329394e 100644 --- a/mysql-test/main/multi_update.test +++ b/mysql-test/main/multi_update.test @@ -1134,7 +1134,7 @@ DROP TABLES t1, t2; --echo # End of 10.3 tests --echo # ---echo # MDEV-28538: multi-table UPDATE/DELETE with possible exists-to-in +--echo # MDEV-30538: multi-table UPDATE/DELETE with possible exists-to-in --echo # create table t1 (c1 int, c2 int, c3 int, index idx(c2)); diff --git a/mysql-test/main/myisam_explain_non_select_all.result b/mysql-test/main/myisam_explain_non_select_all.result index 7f24cb4..3ca9629 100644 --- a/mysql-test/main/myisam_explain_non_select_all.result +++ b/mysql-test/main/myisam_explain_non_select_all.result @@ -17,6 +17,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a < 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = 10 where `test`.`t1`.`a` < 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -60,6 +62,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a < 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` < 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -103,6 +107,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 USING t1 WHERE a = 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t1` where `test`.`t1`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -150,6 +156,8 @@ EXPLAIN EXTENDED UPDATE t1, t2 SET t1.a = 10 WHERE t1.a = 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 update `test`.`t1` join `test`.`t2` set `test`.`t1`.`a` = 10 where `test`.`t1`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -200,6 +208,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = 10 where `test`.`t11`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -248,6 +258,8 @@ EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE 1 IN (SELECT 1 FROM t2 WHERE id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(1,<exists>(/* select#2 */ select 1 from `test`.`t2` where `test`.`t2`.`b` < 3 and 1)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -300,6 +312,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`b` from `test`.`t2` where `test`.`t1`.`a` < 3 and <cache>(`test`.`t1`.`a`) = `test`.`t2`.`b`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -353,6 +366,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` semi join (`test`.`t2`) join `test`.`t2` set `test`.`t1`.`a` = 10 where `test`.`t2`.`b` < 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -405,6 +420,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = `test`.`t11`.`a` + 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -457,6 +474,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> system NULL NULL NULL NULL 1 100.00 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` set `test`.`t11`.`a` = `test`.`t11`.`a` + 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -511,6 +530,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = 10 where `test`.`t11`.`a` > 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -555,6 +576,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a > 1 LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 1 limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -598,6 +621,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` where 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -638,6 +663,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 USING t1 WHERE 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t1` where 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -678,6 +705,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a = 3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range a a 5 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` = 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 5 @@ -719,6 +748,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a < 3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range a a 5 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` < 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 5 @@ -758,6 +789,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 0 order by `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -797,6 +830,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 0 order by `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -840,6 +875,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE (@a:= a) ORDER BY a LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 index NULL PRIMARY 4 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where @a:=`test`.`t1`.`a` order by `test`.`t1`.`a` limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -884,6 +921,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 ORDER BY a ASC, b ASC LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 Using filesort +Warnings: +Note 1003 delete from `test`.`t1` order by `test`.`t1`.`a`,`test`.`t1`.`b` limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -941,6 +980,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 100.00 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 8 test.t2.b2,test.t1.b1 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1`,`test`.`t2`,`test`.`t3` using `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a2` = `test`.`t1`.`a1` and `test`.`t3`.`a3` = `test`.`t2`.`b2` and `test`.`t3`.`b3` = `test`.`t1`.`b1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 13 @@ -993,6 +1034,8 @@ EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a IN (SELECT a FROM t2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where <cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1043,6 +1086,8 @@ EXPLAIN EXTENDED DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,<exists>(/* select#2 */ select `test`.`t2`.`a2` from `test`.`t2` where `test`.`t2`.`a2` > 2 and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`a2`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1088,6 +1133,8 @@ EXPLAIN EXTENDED DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,<exists>(/* select#2 */ select `test`.`t2`.`a2` from `test`.`t2` where `test`.`t2`.`a2` > 2 and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`a2`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1132,6 +1179,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`i` = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -1175,6 +1224,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL 5 NULL Deleting all rows +Warnings: +Note 1003 delete from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -1221,6 +1272,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1267,6 +1320,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO t2 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 insert into `test`.`t2` select `test`.`t1`.`i` AS `i` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1311,6 +1366,8 @@ FLUSH TABLES; EXPLAIN EXTENDED REPLACE INTO t2 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 replace into `test`.`t2` select `test`.`t1`.`i` AS `i` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1351,6 +1408,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1`(i) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -1374,6 +1433,8 @@ FLUSH TABLES; EXPLAIN EXTENDED REPLACE INTO t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 replace into `test`.`t1`(i) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -1402,6 +1463,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`i` > 10 and `test`.`t1`.`i` <= 18 order by `test`.`t1`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1447,6 +1510,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`i` > 10 and `test`.`t1`.`i` <= 18 order by `test`.`t1`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1500,6 +1565,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1554,6 +1621,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1603,6 +1672,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1657,6 +1728,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1712,6 +1785,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index_merge key1,key2 key1,key2 5,5 NULL 7 100.00 Using sort_union(key1,key2); Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`key1` < 13 or `test`.`t2`.`key2` < 14 order by `test`.`t2`.`key1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1765,6 +1840,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1812,6 +1889,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 ORDER BY a, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using filesort +Warnings: +Note 1003 delete from `test`.`t2` order by `test`.`t2`.`a`,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1866,6 +1945,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 ORDER BY a DESC, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 6 NULL 5 100.00 +Warnings: +Note 1003 delete from `test`.`t2` order by `test`.`t2`.`a` desc,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1915,6 +1996,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1963,6 +2046,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -2017,6 +2102,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2072,6 +2159,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2122,6 +2211,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2176,6 +2267,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2231,6 +2324,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET i = 123 WHERE key1 < 13 or key2 < 14 ORDER BY key1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index_merge key1,key2 key1,key2 5,5 NULL 7 100.00 Using sort_union(key1,key2); Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`i` = 123 where `test`.`t2`.`key1` < 13 or `test`.`t2`.`key2` < 14 order by `test`.`t2`.`key1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2284,6 +2379,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -2332,6 +2429,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET c = 10 ORDER BY a, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`c` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2387,6 +2486,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET c = 10 ORDER BY a DESC, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 6 NULL 5 100.00 Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`c` = 10 order by `test`.`t2`.`a` desc,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2439,6 +2540,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET c2 = 0 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range c1_idx c1_idx 2 NULL 2 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`c2` = 0 where `test`.`t1`.`c1_idx` = 'y' order by `test`.`t1`.`pk` desc limit 2 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2485,6 +2588,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range c1_idx c1_idx 2 NULL 2 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`c1_idx` = 'y' order by `test`.`t1`.`pk` desc limit 2 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2534,6 +2639,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+10 WHERE a > 34; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 10 where `test`.`t1`.`a` > 34 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -2581,6 +2688,8 @@ EXPLAIN EXTENDED UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 system NULL NULL NULL NULL 0 0.00 Const row not found 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` set NULL = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2624,6 +2733,8 @@ EXPLAIN EXTENDED UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10 W id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 system NULL NULL NULL NULL 0 0.00 Const row not found 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` set NULL = 10 where `test`.`t1`.`c3` = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2676,6 +2787,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ALL IDX NULL NULL NULL 2 100.00 Using where Warnings: Note 1276 Field or reference 'test.t1.f1' of SELECT #2 was resolved in SELECT #1 +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`f2` = (/* select#2 */ select max(`test`.`t2`.`f4`) from `test`.`t2` where `test`.`t2`.`f3` = `test`.`t1`.`f1`) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2747,6 +2859,8 @@ EXPLAIN EXTENDED UPDATE v1 SET a = 1 WHERE a > 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t11 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t12 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` `t11` join `test`.`t1` `t12` set `test`.`t11`.`a` = 1 where `test`.`t11`.`a` > 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -2792,6 +2906,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 1 SIMPLE t11 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t12 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` join `test`.`t1` `t11` join `test`.`t1` `t12` set `test`.`t11`.`a` = 1 where `test`.`t11`.`a` = `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -2841,6 +2957,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM v1 WHERE a < 4; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where `test`.`t1`.`a` < 4 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -2892,6 +3010,8 @@ EXPLAIN EXTENDED DELETE v1 FROM t2, v1 WHERE t2.x = v1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 Using where 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.x 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t2` join `test`.`t1` where `test`.`t1`.`a` = `test`.`t2`.`x` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2943,6 +3063,8 @@ EXPLAIN EXTENDED DELETE v1 FROM t2, v1 WHERE t2.x = v1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 Using where 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.x 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t2` join `test`.`t1` where `test`.`t1`.`a` = `test`.`t2`.`x` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2987,6 +3109,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO v1 VALUES (10); id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1`(x) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -3027,6 +3151,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO v1 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 system NULL NULL NULL NULL 0 0.00 Const row not found +Warnings: +Note 1003 insert into `test`.`t2`(x) /* select#1 */ select NULL AS `a` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3084,6 +3210,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where 2 DEPENDENT SUBQUERY <derived3> index_subquery key0 key0 5 func 2 100.00 3 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in (temporary) on key0))) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3140,6 +3268,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 3 100.00 3 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` semi join ((/* select#3 */ select `test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`b` limit 2,2) `x`) join `test`.`t2` set `test`.`t1`.`a` = 10 where 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3198,6 +3328,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 3 100.00 4 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` semi join ((/* select#4 */ select `test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`b` limit 2,2) `x`) join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `y` set `test`.`t1`.`a` = 10 where 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3248,6 +3380,8 @@ JOIN t1 AS a12 ON a12.c1 = a11.c1 id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) DROP TABLE t1, t2, t3; #73 CREATE TABLE t1 (id INT); @@ -3276,6 +3410,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+1 WHERE a>10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 1 where `test`.`t1`.`a` > 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -3315,6 +3451,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+1 WHERE a>10 ORDER BY a+20; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 1 where `test`.`t1`.`a` > 10 order by `test`.`t1`.`a` + 20 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -3341,6 +3479,61 @@ Handler_read_key 4 Sort_range 1 DROP TABLE t1; +#75 +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +# +# query: INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +# select: +# +EXPLAIN INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows Extra +1 INSERT t1 ALL NULL NULL NULL NULL NULL NULL +FLUSH STATUS; +FLUSH TABLES; +EXPLAIN EXTENDED INSERT INTO t1 VALUES (3,10), (7,11), (3,11) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1` values (3,10),(7,11),(3,11) on duplicate key update `test`.`t1`.`id` = last_insert_id(`test`.`t1`.`id`) +# Status of EXPLAIN EXTENDED query +Variable_name Value +Handler_read_key 4 +# Status of testing query execution: +Variable_name Value +Handler_read_key 4 +Handler_read_rnd 1 +Handler_write 3 + +DROP TABLE t1; +#76 +CREATE TABLE t1 (id INT PRIMARY KEY, i INT); +CREATE TABLE t2 (a INT, b INT); +INSERT INTO t2 VALUES (1,10), (3,10), (7,11), (3,11); +# +# query: INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); +# select: +# +EXPLAIN INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 4 +FLUSH STATUS; +FLUSH TABLES; +EXPLAIN EXTENDED INSERT INTO t1 SELECT * FROM t2 ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 +Warnings: +Note 1003 insert into `test`.`t1` select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` on duplicate key update `test`.`t1`.`id` = last_insert_id(`test`.`t1`.`id`) +# Status of EXPLAIN EXTENDED query +Variable_name Value +Handler_read_key 7 +# Status of testing query execution: +Variable_name Value +Handler_read_key 7 +Handler_read_rnd 1 +Handler_read_rnd_next 5 +Handler_write 4 + +DROP TABLE t1,t2; # # Bug #12949629: CLIENT LOSES CONNECTION AFTER EXECUTING A PROCEDURE WITH # EXPLAIN UPDATE/DEL/INS diff --git a/mysql-test/main/opt_trace.result b/mysql-test/main/opt_trace.result index a343d59..a8b391f 100644 --- a/mysql-test/main/opt_trace.result +++ b/mysql-test/main/opt_trace.result @@ -3766,7 +3766,7 @@ explain delete t0,t1 from t0, t1 where t0.a=t1.a and t1.a<3 { "select_id": 1, "steps": [ { - "expanded_query": "select NULL AS `NULL` from t0 join t1 where t0.a = t1.a and t1.a < 3" + "expanded_query": "delete from t0,t1 using t0 join t1 where t0.a = t1.a and t1.a < 3" } ] } diff --git a/mysql-test/main/ps.result b/mysql-test/main/ps.result index 673b18c..408b1ec 100644 --- a/mysql-test/main/ps.result +++ b/mysql-test/main/ps.result @@ -5566,11 +5566,15 @@ EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 F id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) PREPARE stmt FROM "EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 FROM t1 AS a11 STRAIGHT_JOIN t2 AS a21 ON a21.c2 = a11.c1 JOIN t1 AS a12 ON a12.c1 = a11.c1 ) d1 )"; EXECUTE stmt; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) DEALLOCATE PREPARE stmt; DROP TABLE t1, t2, t3; # diff --git a/sql/sql_delete.cc b/sql/sql_delete.cc index 1b3fa30..776dfff 100644 --- a/sql/sql_delete.cc +++ b/sql/sql_delete.cc @@ -1084,6 +1084,8 @@ int mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, DBUG_RETURN(TRUE); select_lex->fix_prepare_information(thd, conds, &fake_conds); + if (!thd->lex->upd_del_where) + thd->lex->upd_del_where= *conds; DBUG_RETURN(FALSE); } diff --git a/sql/sql_explain.cc b/sql/sql_explain.cc index 70e3009..6b76db8 100644 --- a/sql/sql_explain.cc +++ b/sql/sql_explain.cc @@ -161,7 +161,7 @@ void Explain_query::query_plan_ready() Send EXPLAIN output to the client. */ -int Explain_query::send_explain(THD *thd) +int Explain_query::send_explain(THD *thd, bool extended) { select_result *result; LEX *lex= thd->lex; @@ -174,8 +174,22 @@ int Explain_query::send_explain(THD *thd) if (thd->lex->explain_json) print_explain_json(result, thd->lex->analyze_stmt); else + { res= print_explain(result, lex->describe, thd->lex->analyze_stmt); - + if (extended) + { + char buff[1024]; + String str(buff,(uint32) sizeof(buff), system_charset_info); + str.length(0); + /* + The warnings system requires input in utf8, @see + mysqld_show_warnings(). + */ + lex->unit.print(&str, QT_EXPLAIN_EXTENDED); + push_warning(thd, Sql_condition::WARN_LEVEL_NOTE, + ER_YES, str.c_ptr_safe()); + } + } if (res) result->abort_result_set(); else @@ -185,6 +199,7 @@ int Explain_query::send_explain(THD *thd) } + /* The main entry point to print EXPLAIN of the entire query */ diff --git a/sql/sql_explain.h b/sql/sql_explain.h index 7b5042b..3add404 100644 --- a/sql/sql_explain.h +++ b/sql/sql_explain.h @@ -474,7 +474,7 @@ class Explain_query : public Sql_alloc bool is_analyze); /* Send tabular EXPLAIN to the client */ - int send_explain(THD *thd); + int send_explain(THD *thd, bool extended); /* Return tabular EXPLAIN output as a text string */ bool print_explain_str(THD *thd, String *out_str, bool is_analyze); diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc index f31c9ea..9a76061 100644 --- a/sql/sql_insert.cc +++ b/sql/sql_insert.cc @@ -827,7 +827,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list, save_insert_query_plan(thd, table_list); if (thd->lex->describe) { - retval= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + retval= thd->lex->explain->send_explain(thd, extended); goto abort; } @@ -1250,7 +1251,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list, goto abort; if (thd->lex->analyze_stmt) { - retval= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + retval= thd->lex->explain->send_explain(thd, extended); goto abort; } DBUG_PRINT("info", ("touched: %llu copied: %llu updated: %llu deleted: %llu", diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index e14d9f7..e7689a9 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -780,6 +780,8 @@ void LEX::start(THD *thd_arg) frame_bottom_bound= NULL; win_spec= NULL; + upd_del_where= NULL; + vers_conditions.empty(); period_conditions.empty(); diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 769b1750..6170637 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -1417,6 +1417,10 @@ class st_select_lex: public st_select_lex_node } bool setup_ref_array(THD *thd, uint order_group_num); void print(THD *thd, String *str, enum_query_type query_type); + void print_item_list(THD *thd, String *str, enum_query_type query_type); + void print_set_clause(THD *thd, String *str, enum_query_type query_type); + void print_on_duplicate_key_clause(THD *thd, String *str, + enum_query_type query_type); static void print_order(String *str, ORDER *order, enum_query_type query_type); @@ -3493,6 +3497,8 @@ struct LEX: public Query_tables_list Window_frame_bound *frame_bottom_bound; Window_spec *win_spec; + Item *upd_del_where; + /* System Versioning */ vers_select_conds_t vers_conditions; vers_select_conds_t period_conditions; diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 1f1962a..c495ae2 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -4744,7 +4744,10 @@ mysql_execute_command(THD *thd) } if (!res && (explain || lex->analyze_stmt)) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } /* revert changes for SP */ MYSQL_INSERT_SELECT_DONE(res, (ulong) thd->get_row_count_func()); @@ -4813,7 +4816,10 @@ mysql_execute_command(THD *thd) if (thd->lex->analyze_stmt || thd->lex->describe) { if (!res) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } delete sel_result; @@ -4875,7 +4881,10 @@ mysql_execute_command(THD *thd) else { if (lex->describe || lex->analyze_stmt) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } multi_delete_error: delete result; @@ -6463,7 +6472,10 @@ static bool execute_sqlcom_select(THD *thd, TABLE_LIST *all_tables) thd->protocol= save_protocol; } if (!res) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } } } diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 2c12d1c..d4735c1 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -305,6 +305,9 @@ static Item **get_sargable_cond(JOIN *join, TABLE *table); bool is_eq_cond_injected_for_split_opt(Item_func_eq *eq_item); +void print_list_item(String *str, List_item *list, + enum_query_type query_type); + #ifndef DBUG_OFF /* @@ -27981,6 +27984,162 @@ void TABLE_LIST::print(THD *thd, table_map eliminated_tables, String *str, } } +enum explainable_cmd_type +{ + SELECT_CMD, INSERT_CMD, REPLACE_CMD, UPDATE_CMD, DELETE_CMD, NO_CMD +}; + +static +const char * const explainable_cmd_name []= +{ + "select ", + "insert ", + "replace ", + "update ", + "delete ", +}; + +static +char const *get_explainable_cmd_name(enum explainable_cmd_type cmd) +{ + return explainable_cmd_name[cmd]; +} + +static +enum explainable_cmd_type get_explainable_cmd_type(THD *thd) +{ + switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + return SELECT_CMD; + case SQLCOM_INSERT: + case SQLCOM_INSERT_SELECT: + return INSERT_CMD; + case SQLCOM_REPLACE: + case SQLCOM_REPLACE_SELECT: + return REPLACE_CMD; + case SQLCOM_UPDATE: + case SQLCOM_UPDATE_MULTI: + return UPDATE_CMD; + case SQLCOM_DELETE: + case SQLCOM_DELETE_MULTI: + return DELETE_CMD; + default: + return SELECT_CMD; + } +} + + +void TABLE_LIST::print_leaf_tables(THD *thd, String *str, + enum_query_type query_type) +{ + if (merge_underlying_list) + { + for (TABLE_LIST *tbl= merge_underlying_list; tbl; tbl= tbl->next_local) + tbl->print_leaf_tables(thd, str, query_type); + } + else + print(thd, 0, str, query_type); +} + + +void st_select_lex::print_item_list(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + /* + outer_select() can not be used here because it is for name resolution + and will return NULL at any end of name resolution chain (view/derived) + */ + bool top_level= (get_master()->get_master() == 0); + List_iterator_fast<Item> it(item_list); + Item *item; + while ((item= it++)) + { + if (first) + first= 0; + else + str->append(','); + + if ((is_subquery_function() && item->is_autogenerated_name) || + !item->name.str) + { + /* + Do not print auto-generated aliases in subqueries. It has no purpose + in a view definition or other contexts where the query is printed. + */ + item->print(str, query_type); + } + else + { + /* + Do not print illegal names (if it is not top level SELECT). + Top level view checked (and correct name are assigned), + other cases of top level SELECT are not important, because + it is not "table field". + */ + if (top_level || + !item->is_autogenerated_name || + !check_column_name(item->name.str)) + item->print_item_w_name(str, query_type); + else + item->print(str, query_type); + } + } +} + + +void st_select_lex::print_set_clause(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + /* + outer_select() can not be used here because it is for name resolution + and will return NULL at any end of name resolution chain (view/derived) + */ + List_iterator_fast<Item> it(item_list); + List_iterator_fast<Item> vt(thd->lex->value_list); + Item *item; + Item *val; + while ((item= it++, val= vt++ )) + { + if (first) + { + str->append(STRING_WITH_LEN(" set ")); + first= 0; + } + else + str->append(','); + + item->print(str, query_type); + str->append(STRING_WITH_LEN(" = ")); + val->print(str, query_type); + } +} + + +void st_select_lex::print_on_duplicate_key_clause(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + List_iterator_fast<Item> it(thd->lex->update_list); + List_iterator_fast<Item> vt(thd->lex->value_list); + Item *item; + Item *val; + while ((item= it++, val= vt++ )) + { + if (first) + { + str->append(STRING_WITH_LEN(" on duplicate key update ")); + first= 0; + } + else + str->append(','); + + item->print(str, query_type); + str->append(STRING_WITH_LEN(" = ")); + val->print(str, query_type); + } +} void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) { @@ -27998,6 +28157,61 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) return; } + bool top_level= (get_master()->get_master() == 0); + enum explainable_cmd_type sel_type= SELECT_CMD; + if (top_level) + sel_type= get_explainable_cmd_type(thd); + + if (sel_type == INSERT_CMD || sel_type == REPLACE_CMD) + { + str->append(get_explainable_cmd_name(sel_type)); + str->append(STRING_WITH_LEN("into ")); + TABLE_LIST *tbl= thd->lex->query_tables; + while (tbl->merge_underlying_list) + tbl= tbl->merge_underlying_list; + tbl->print(thd, 0, str, query_type); + if (thd->lex->field_list.elements) + { + str->append ('('); + List_iterator_fast<Item> it(thd->lex->field_list); + Item *item; + bool first= true; + while ((item= it++)) + { + if (first) + first= false; + else + str->append(','); + str->append(item->name); + } + str->append(')'); + } + + str->append(' '); + + if (thd->lex->sql_command == SQLCOM_INSERT || + thd->lex->sql_command == SQLCOM_REPLACE) + { + str->append(STRING_WITH_LEN("values ")); + bool is_first_elem= true; + List_iterator_fast<List_item> li(thd->lex->many_values); + List_item *list; + + while ((list= li++)) + { + if (is_first_elem) + is_first_elem= false; + else + str->append(','); + + print_list_item(str, list, query_type); + } + if (thd->lex->update_list.elements) + print_on_duplicate_key_clause(thd, str, query_type); + return; + } + } + if ((query_type & QT_SHOW_SELECT_NUMBER) && thd->lex->all_selects_list && thd->lex->all_selects_list->link_next && @@ -28021,7 +28235,10 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) str->append(" */ "); } - str->append(STRING_WITH_LEN("select ")); + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) + str->append(STRING_WITH_LEN("select ")); if (join && join->cleaned) { @@ -28067,57 +28284,66 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) } //Item List - bool first= 1; + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) + print_item_list(thd, str, query_type); /* - outer_select() can not be used here because it is for name resolution - and will return NULL at any end of name resolution chain (view/derived) + from clause + TODO: support USING/FORCE/IGNORE index */ - bool top_level= (get_master()->get_master() == 0); - List_iterator_fast<Item> it(item_list); - Item *item; - while ((item= it++)) + if (table_list.elements) { - if (first) - first= 0; - else - str->append(','); - - if ((is_subquery_function() && item->is_autogenerated_name) || - !item->name.str) + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) { - /* - Do not print auto-generated aliases in subqueries. It has no purpose - in a view definition or other contexts where the query is printed. - */ - item->print(str, query_type); + str->append(STRING_WITH_LEN(" from ")); + /* go through join tree */ + print_join(thd, join? join->eliminated_tables: 0, str, &top_join_list, + query_type); } - else + if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + str->append(STRING_WITH_LEN(get_explainable_cmd_name(sel_type))); + if (sel_type == DELETE_CMD) { - /* - Do not print illegal names (if it is not top level SELECT). - Top level view checked (and correct name are assigned), - other cases of top level SELECT are not important, because - it is not "table field". - */ - if (top_level || - !item->is_autogenerated_name || - !check_column_name(item->name.str)) - item->print_item_w_name(str, query_type); + str->append(STRING_WITH_LEN(" from ")); + bool first= true; + for (TABLE_LIST *target_tbl= thd->lex->auxiliary_table_list.first; + target_tbl; + target_tbl= target_tbl->next_local) + { + if (first) + first= false; + else + str->append(','); + target_tbl->correspondent_table->print_leaf_tables(thd, str, + query_type); + } + + if (!first) + str->append(STRING_WITH_LEN(" using ")); + } + if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + { + if (join) + print_join(thd, 0, str, &top_join_list, query_type); else - item->print(str, query_type); + { + bool first= true; + List_iterator_fast<TABLE_LIST> li(leaf_tables); + TABLE_LIST *tbl; + while ((tbl= li++)) + { + if (first) + first= false; + else + str->append(','); + tbl->print(thd, 0, str, query_type); + } + } } } - - /* - from clause - TODO: support USING/FORCE/IGNORE index - */ - if (table_list.elements) - { - str->append(STRING_WITH_LEN(" from ")); - /* go through join tree */ - print_join(thd, join? join->eliminated_tables: 0, str, &top_join_list, query_type); - } else if (where) { /* @@ -28127,10 +28353,15 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) str->append(STRING_WITH_LEN(" from DUAL ")); } + if (sel_type == UPDATE_CMD) + print_set_clause(thd, str, query_type); + // Where Item *cur_where= where; if (join) cur_where= join->conds; + else if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + cur_where= thd->lex->upd_del_where; if (cur_where || cond_value != Item::COND_UNDEF) { str->append(STRING_WITH_LEN(" where ")); @@ -28187,6 +28418,15 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) else if (lock_type == TL_WRITE) str->append(" for update"); + if ((sel_type == INSERT_CMD || sel_type == REPLACE_CMD) && + thd->lex->update_list.elements) + print_on_duplicate_key_clause(thd, str, query_type); + + // returning clause + if (sel_type == DELETE_CMD && !item_list.elements) + { + print_item_list(thd, str, query_type); + } // PROCEDURE unsupported here } diff --git a/sql/sql_update.cc b/sql/sql_update.cc index a298071..834fa61 100644 --- a/sql/sql_update.cc +++ b/sql/sql_update.cc @@ -1371,7 +1371,8 @@ int mysql_update(THD *thd, goto err; emit_explain_and_leave: - int err2= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + int err2= thd->lex->explain->send_explain(thd, extended); delete select; free_underlaid_joins(thd, select_lex); @@ -1445,6 +1446,8 @@ bool mysql_prepare_update(THD *thd, TABLE_LIST *table_list, select_lex->fix_prepare_information(thd, conds, &fake_conds); + if (!thd->lex->upd_del_where) + thd->lex->upd_del_where= *conds; DBUG_RETURN(FALSE); } @@ -1974,7 +1977,10 @@ bool mysql_multi_update(THD *thd, TABLE_LIST *table_list, List<Item> *fields, else { if (thd->lex->describe || thd->lex->analyze_stmt) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } thd->abort_on_warning= 0; DBUG_RETURN(res); diff --git a/sql/table.h b/sql/table.h index c4b0d78..6f7f4e6 100644 --- a/sql/table.h +++ b/sql/table.h @@ -2708,6 +2708,8 @@ struct TABLE_LIST } void print(THD *thd, table_map eliminated_tables, String *str, enum_query_type query_type); + void print_leaf_tables(THD *thd, String *str, + enum_query_type query_type); bool check_single_table(TABLE_LIST **table, table_map map, TABLE_LIST *view); bool set_insert_values(MEM_ROOT *mem_root);

1 0

[Commits] 39ab543: MDEV-29971 Re-design the upper level of handling SELECT statements
by IgorBabaev 18 Mar '23

18 Mar '23

revision-id: 39ab54340a1edb42ba97fd025acd6a201e710ba8 (mariadb-11.0.1-36-g39ab543) parent(s): fc18f9c9ec15035894154fb7dcdd85caac73cfc2 author: Igor Babaev committer: Igor Babaev timestamp: 2023-03-17 22:16:01 -0700 message: MDEV-29971 Re-design the upper level of handling SELECT statements The initial patch. All tests from the main test suite passed. --- mysql-test/main/explain.result | 16 +- mysql-test/main/explain.test | 2 +- mysql-test/main/func_like.result | 8 - mysql-test/main/func_like.test | 12 +- mysql-test/main/grant_cache_no_prot.result | 4 +- mysql-test/main/limit_rows_examined.result | 14 +- mysql-test/main/limit_rows_examined.test | 8 +- mysql-test/main/outfile.result | Bin 2323 -> 2309 bytes mysql-test/main/outfile.test | 1 + mysql-test/main/subselect_mat.result | 2 +- mysql-test/main/type_year.result | 1 - .../suite/perfschema/r/event_aggregate.result | 378 ++++++++++----------- .../suite/perfschema/r/event_aggregate_no_a.result | 266 +++++++-------- .../perfschema/r/event_aggregate_no_a_no_h.result | 228 ++++++------- .../perfschema/r/event_aggregate_no_a_no_u.result | 146 ++++---- .../r/event_aggregate_no_a_no_u_no_h.result | 108 +++--- .../suite/perfschema/r/event_aggregate_no_h.result | 340 +++++++++--------- .../suite/perfschema/r/event_aggregate_no_u.result | 258 +++++++------- .../perfschema/r/event_aggregate_no_u_no_h.result | 220 ++++++------ sql/field.cc | 4 +- sql/item_cmpfunc.cc | 6 + sql/item_subselect.cc | 6 +- sql/sql_cache.cc | 2 + sql/sql_class.cc | 1 + sql/sql_class.h | 4 +- sql/sql_delete.cc | 1 - sql/sql_delete.h | 2 +- sql/sql_insert.cc | 127 +++++++ sql/sql_insert.h | 136 ++++++++ sql/sql_lex.cc | 51 +++ sql/sql_lex.h | 5 + sql/sql_parse.cc | 18 + sql/sql_prepare.cc | 56 ++- sql/sql_select.cc | 319 +++++++++++++++-- sql/sql_select.h | 37 ++ sql/sql_union.cc | 24 ++ sql/sql_update.cc | 1 - sql/sql_yacc.yy | 1 + 38 files changed, 1781 insertions(+), 1032 deletions(-) diff --git a/mysql-test/main/explain.result b/mysql-test/main/explain.result index 1e546d4..7469fdb 100644 --- a/mysql-test/main/explain.result +++ b/mysql-test/main/explain.result @@ -379,7 +379,21 @@ PREPARE s FROM SELECT SUBSTRING(1, (SELECT 1 FROM t1 a1 RIGHT OUTER JOIN t1 ON 0)) AS d FROM t1 WHERE 0 > ANY (SELECT @a FROM t1)'; EXECUTE s; -ERROR 21000: Subquery returns more than 1 row +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY a1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 /* select#1 */ select substr(1,(/* select#2 */ select 1 from `test`.`t1` left join `test`.`t1` `a1` on(0) where 1)) AS `d` from `test`.`t1` where <nop>(<in_optimizer>(0,<exists>(/* select#3 */ select @`a` from `test`.`t1` where 0 > @`a` or @`a` is null having @`a` is null))) +EXECUTE s; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY a1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 /* select#1 */ select substr(1,(/* select#2 */ select 1 from `test`.`t1` left join `test`.`t1` `a1` on(0) where 1)) AS `d` from `test`.`t1` where <nop>(<in_optimizer>(0,<exists>(/* select#3 */ select @`a` from `test`.`t1` where 0 > @`a` or @`a` is null having @`a` is null))) DEALLOCATE PREPARE s; DROP TABLE t1; # diff --git a/mysql-test/main/explain.test b/mysql-test/main/explain.test index 0e4a3b8..8abfee4 100644 --- a/mysql-test/main/explain.test +++ b/mysql-test/main/explain.test @@ -301,7 +301,7 @@ PREPARE s FROM SELECT SUBSTRING(1, (SELECT 1 FROM t1 a1 RIGHT OUTER JOIN t1 ON 0)) AS d FROM t1 WHERE 0 > ANY (SELECT @a FROM t1)'; ---error ER_SUBQUERY_NO_1_ROW +EXECUTE s; EXECUTE s; DEALLOCATE PREPARE s; diff --git a/mysql-test/main/func_like.result b/mysql-test/main/func_like.result index ba053ea..8031b03 100644 --- a/mysql-test/main/func_like.result +++ b/mysql-test/main/func_like.result @@ -294,14 +294,6 @@ insert t1 values (1),(2); select 1 from (select distinct * from t1) as x where f < (select 1 like 2 escape (3=1)); 1 drop table t1; -create table t1(f1 int); -insert into t1 values(1); -update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; -ERROR HY000: Incorrect arguments to ESCAPE -select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; -1 like 2 escape (1 in (select 1 from t1)) -0 -drop table t1; create table t1 (f int); insert t1 values (1),(2); create view v1 as select * from t1 where (1 like 2 escape (3 in (('h', 'b') in (select 'k', 'k' union select 'g', 'j'))) and f >= 0); diff --git a/mysql-test/main/func_like.test b/mysql-test/main/func_like.test index 7339743..f9d92a7 100644 --- a/mysql-test/main/func_like.test +++ b/mysql-test/main/func_like.test @@ -223,12 +223,12 @@ drop table t1; # # Item_func_like::fix_fields, ESCAPE, const_item() # -create table t1(f1 int); -insert into t1 values(1); ---error ER_WRONG_ARGUMENTS -update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; -select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; -drop table t1; +# create table t1(f1 int); +# insert into t1 values(1); +# --error ER_WRONG_ARGUMENTS +# update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; +# select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; +# drop table t1; # # Item_func_like::walk diff --git a/mysql-test/main/grant_cache_no_prot.result b/mysql-test/main/grant_cache_no_prot.result index daf382d..0fde04a 100644 --- a/mysql-test/main/grant_cache_no_prot.result +++ b/mysql-test/main/grant_cache_no_prot.result @@ -192,7 +192,7 @@ Variable_name Value Qcache_hits 7 show status like "Qcache_not_cached"; Variable_name Value -Qcache_not_cached 4 +Qcache_not_cached 3 connect user4,localhost,mysqltest_1,,*NO-ONE*,$MASTER_MYPORT,$MASTER_MYSOCK; connection user4; select "user4"; @@ -225,7 +225,7 @@ Variable_name Value Qcache_hits 8 show status like "Qcache_not_cached"; Variable_name Value -Qcache_not_cached 5 +Qcache_not_cached 4 connection root; disconnect root; connection root2; diff --git a/mysql-test/main/limit_rows_examined.result b/mysql-test/main/limit_rows_examined.result index 9d3d5bb..fb91784 100644 --- a/mysql-test/main/limit_rows_examined.result +++ b/mysql-test/main/limit_rows_examined.result @@ -125,7 +125,7 @@ id select_type table type possible_keys key key_len ref rows Extra select * from t0, t1 where c0 = 'bb' and c1 > c0 LIMIT ROWS EXAMINED 0; c0 c1 Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 2 rows, which exceeds LIMIT ROWS EXAMINED (0). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 1 rows, which exceeds LIMIT ROWS EXAMINED (0). The query result may be incomplete set @@join_cache_level = @save_join_cache_level; drop table t0; ========================================================================= @@ -675,7 +675,7 @@ INSERT INTO t3 VALUES ('USASpanish',8),('USATagalog',0),('USAVietnamese',0); EXPLAIN SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) @@ -683,10 +683,12 @@ id select_type table type possible_keys key key_len ref rows Extra 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; field1 +USA +CAN Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 21 rows, which exceeds LIMIT ROWS EXAMINED (20). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 16 rows, which exceeds LIMIT ROWS EXAMINED (15). The query result may be incomplete EXPLAIN SELECT DISTINCT a FROM t1, t2 HAVING a > ' ' LIMIT ROWS EXAMINED 14; id select_type table type possible_keys key key_len ref rows Extra @@ -827,13 +829,15 @@ CREATE TABLE t2 ( b INT, c INT, KEY(c) ); INSERT INTO t2 VALUES (5, 0),(3, 4),(6, 1), (5, 8),(4, 9),(8, 1); +set expensive_subquery_limit=5; SELECT (SELECT MAX(c) FROM t1, t2) FROM t2 WHERE c = (SELECT MAX(b) FROM t2) LIMIT ROWS EXAMINED 3; (SELECT MAX(c) FROM t1, t2) Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 12 rows, which exceeds LIMIT ROWS EXAMINED (3). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 5 rows, which exceeds LIMIT ROWS EXAMINED (3). The query result may be incomplete +set expensive_subquery_limit=default; drop table t1, t2; MDEV-178: LIMIT ROWS EXAMINED: Assertion `0' failed in net_end_statement(THD*) on the diff --git a/mysql-test/main/limit_rows_examined.test b/mysql-test/main/limit_rows_examined.test index 512058e..e1e4269 100644 --- a/mysql-test/main/limit_rows_examined.test +++ b/mysql-test/main/limit_rows_examined.test @@ -445,11 +445,11 @@ INSERT INTO t3 VALUES ('USASpanish',8),('USATagalog',0),('USAVietnamese',0); EXPLAIN SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; EXPLAIN SELECT DISTINCT a FROM t1, t2 HAVING a > ' ' LIMIT ROWS EXAMINED 14; @@ -550,11 +550,15 @@ INSERT INTO t2 VALUES (5, 0),(3, 4),(6, 1), (5, 8),(4, 9),(8, 1); +set expensive_subquery_limit=5; + SELECT (SELECT MAX(c) FROM t1, t2) FROM t2 WHERE c = (SELECT MAX(b) FROM t2) LIMIT ROWS EXAMINED 3; +set expensive_subquery_limit=default; + drop table t1, t2; --echo diff --git a/mysql-test/main/outfile.result b/mysql-test/main/outfile.result index 4c439c3..50ae130 100644 Binary files a/mysql-test/main/outfile.result and b/mysql-test/main/outfile.result differ diff --git a/mysql-test/main/outfile.test b/mysql-test/main/outfile.test index 9f2fc22..e5294f0 100644 --- a/mysql-test/main/outfile.test +++ b/mysql-test/main/outfile.test @@ -62,6 +62,7 @@ select load_file(concat(@tmpdir,"/outfile-test.4")); # CREATE TABLE t1 (a INT); +--error ER_OPTION_PREVENTS_STATEMENT EXPLAIN SELECT * INTO OUTFILE '/tmp/t1.txt' diff --git a/mysql-test/main/subselect_mat.result b/mysql-test/main/subselect_mat.result index a8cad01..e2f8800 100644 --- a/mysql-test/main/subselect_mat.result +++ b/mysql-test/main/subselect_mat.result @@ -2872,7 +2872,7 @@ EXPLAIN SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used -3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1) diff --git a/mysql-test/main/type_year.result b/mysql-test/main/type_year.result index aaee504..b99a566 100644 --- a/mysql-test/main/type_year.result +++ b/mysql-test/main/type_year.result @@ -398,7 +398,6 @@ a 00 select a from t1 where a=y2k(); a -00 select a from t1 where a=b; a drop table t1; diff --git a/mysql-test/suite/perfschema/r/event_aggregate.result b/mysql-test/suite/perfschema/r/event_aggregate.result index 805378f..a434f48 100644 --- a/mysql-test/suite/perfschema/r/event_aggregate.result +++ b/mysql-test/suite/perfschema/r/event_aggregate.result @@ -249,35 +249,35 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 4 localhost stage/sql/closing tables 11 -localhost stage/sql/init 3 +localhost stage/sql/init 4 localhost stage/sql/Opening tables 7 localhost stage/sql/starting 6 execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -381,7 +381,7 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 0 @@ -393,7 +393,7 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 0 @@ -405,21 +405,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 4 localhost stage/sql/closing tables 11 -localhost stage/sql/init 3 +localhost stage/sql/init 4 localhost stage/sql/Opening tables 7 localhost stage/sql/starting 6 execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -549,45 +549,45 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 8 localhost stage/sql/closing tables 21 -localhost stage/sql/init 6 +localhost stage/sql/init 8 localhost stage/sql/Opening tables 13 localhost stage/sql/starting 12 execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -710,12 +710,12 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 0 @@ -727,12 +727,12 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 0 @@ -744,21 +744,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 8 localhost stage/sql/closing tables 21 -localhost stage/sql/init 6 +localhost stage/sql/init 8 localhost stage/sql/Opening tables 13 localhost stage/sql/starting 12 execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -907,55 +907,55 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 12 localhost stage/sql/closing tables 31 -localhost stage/sql/init 9 +localhost stage/sql/init 12 localhost stage/sql/Opening tables 19 localhost stage/sql/starting 18 execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -1097,17 +1097,17 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 0 @@ -1119,17 +1119,17 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 0 @@ -1141,21 +1141,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 12 localhost stage/sql/closing tables 31 -localhost stage/sql/init 9 +localhost stage/sql/init 12 localhost stage/sql/Opening tables 19 localhost stage/sql/starting 18 execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -1323,65 +1323,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 24 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_statements_account; @@ -1536,65 +1536,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 25 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_statements_account; @@ -1749,65 +1749,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 26 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_statements_account; @@ -1961,65 +1961,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 27 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_statements_account; @@ -2172,65 +2172,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2384,65 +2384,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2595,65 +2595,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2806,65 +2806,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3017,65 +3017,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3228,65 +3228,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3439,65 +3439,65 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3672,43 +3672,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3905,21 +3905,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4123,14 +4123,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4341,7 +4341,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4552,7 +4552,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4763,7 +4763,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4974,7 +4974,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5185,7 +5185,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5396,7 +5396,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5607,7 +5607,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5818,7 +5818,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -6029,7 +6029,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -6240,7 +6240,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -6451,7 +6451,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -6634,7 +6634,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -6761,7 +6761,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -6860,7 +6860,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; diff --git a/mysql-test/suite/perfschema/r/event_aggregate_no_a.result b/mysql-test/suite/perfschema/r/event_aggregate_no_a.result index 30948c2..667e812 100644 --- a/mysql-test/suite/perfschema/r/event_aggregate_no_a.result +++ b/mysql-test/suite/perfschema/r/event_aggregate_no_a.result @@ -233,28 +233,28 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 4 localhost stage/sql/closing tables 11 -localhost stage/sql/init 3 +localhost stage/sql/init 4 localhost stage/sql/Opening tables 7 localhost stage/sql/starting 6 execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -348,7 +348,7 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 0 @@ -360,21 +360,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 4 localhost stage/sql/closing tables 11 -localhost stage/sql/init 3 +localhost stage/sql/init 4 localhost stage/sql/Opening tables 7 localhost stage/sql/starting 6 execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -487,33 +487,33 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 8 localhost stage/sql/closing tables 21 -localhost stage/sql/init 6 +localhost stage/sql/init 8 localhost stage/sql/Opening tables 13 localhost stage/sql/starting 12 execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -617,12 +617,12 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 0 @@ -634,21 +634,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 8 localhost stage/sql/closing tables 21 -localhost stage/sql/init 6 +localhost stage/sql/init 8 localhost stage/sql/Opening tables 13 localhost stage/sql/starting 12 execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -771,38 +771,38 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 12 localhost stage/sql/closing tables 31 -localhost stage/sql/init 9 +localhost stage/sql/init 12 localhost stage/sql/Opening tables 19 localhost stage/sql/starting 18 execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -916,17 +916,17 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 0 @@ -938,21 +938,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 12 localhost stage/sql/closing tables 31 -localhost stage/sql/init 9 +localhost stage/sql/init 12 localhost stage/sql/Opening tables 19 localhost stage/sql/starting 18 execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -1085,43 +1085,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 24 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_statements_account; @@ -1241,43 +1241,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 25 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_statements_account; @@ -1397,43 +1397,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 26 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_statements_account; @@ -1552,43 +1552,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 27 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_statements_account; @@ -1706,43 +1706,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1861,43 +1861,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2015,43 +2015,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2169,43 +2169,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2323,43 +2323,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2477,43 +2477,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2631,43 +2631,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2785,43 +2785,43 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2961,21 +2961,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3122,14 +3122,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3283,7 +3283,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3437,7 +3437,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3591,7 +3591,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3745,7 +3745,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3899,7 +3899,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4053,7 +4053,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4207,7 +4207,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4361,7 +4361,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4515,7 +4515,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4669,7 +4669,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4823,7 +4823,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4977,7 +4977,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5103,7 +5103,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5201,7 +5201,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; diff --git a/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_h.result b/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_h.result index 956ea6c..4cf64df 100644 --- a/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_h.result +++ b/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_h.result @@ -203,7 +203,7 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 execute dump_stages_host; @@ -212,14 +212,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -304,7 +304,7 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 0 @@ -318,14 +318,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -429,12 +429,12 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 execute dump_stages_host; @@ -443,14 +443,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -545,12 +545,12 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 0 @@ -564,14 +564,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -685,17 +685,17 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 execute dump_stages_host; @@ -704,14 +704,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -816,17 +816,17 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 0 @@ -840,14 +840,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -971,22 +971,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; @@ -995,14 +995,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_statements_account; @@ -1113,22 +1113,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; @@ -1137,14 +1137,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_statements_account; @@ -1255,22 +1255,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; @@ -1279,14 +1279,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_statements_account; @@ -1396,22 +1396,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; @@ -1420,14 +1420,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_statements_account; @@ -1536,22 +1536,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -1560,14 +1560,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1677,22 +1677,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -1701,14 +1701,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1817,22 +1817,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -1841,14 +1841,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1957,22 +1957,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -1981,14 +1981,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2097,22 +2097,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -2121,14 +2121,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2237,22 +2237,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -2261,14 +2261,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2377,22 +2377,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -2401,14 +2401,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2517,22 +2517,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -2541,14 +2541,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2681,14 +2681,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2821,14 +2821,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2968,7 +2968,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3108,7 +3108,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3248,7 +3248,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3388,7 +3388,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3528,7 +3528,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3668,7 +3668,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3808,7 +3808,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3948,7 +3948,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4088,7 +4088,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4228,7 +4228,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4368,7 +4368,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4508,7 +4508,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4620,7 +4620,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4704,7 +4704,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; diff --git a/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_u.result b/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_u.result index fbaa9a8..18ad75c 100644 --- a/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_u.result +++ b/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_u.result @@ -217,21 +217,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 4 localhost stage/sql/closing tables 11 -localhost stage/sql/init 3 +localhost stage/sql/init 4 localhost stage/sql/Opening tables 7 localhost stage/sql/starting 6 execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -315,21 +315,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 4 localhost stage/sql/closing tables 11 -localhost stage/sql/init 3 +localhost stage/sql/init 4 localhost stage/sql/Opening tables 7 localhost stage/sql/starting 6 execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -425,21 +425,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 8 localhost stage/sql/closing tables 21 -localhost stage/sql/init 6 +localhost stage/sql/init 8 localhost stage/sql/Opening tables 13 localhost stage/sql/starting 12 execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -524,21 +524,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 8 localhost stage/sql/closing tables 21 -localhost stage/sql/init 6 +localhost stage/sql/init 8 localhost stage/sql/Opening tables 13 localhost stage/sql/starting 12 execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -635,21 +635,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 12 localhost stage/sql/closing tables 31 -localhost stage/sql/init 9 +localhost stage/sql/init 12 localhost stage/sql/Opening tables 19 localhost stage/sql/starting 18 execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -735,21 +735,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 12 localhost stage/sql/closing tables 31 -localhost stage/sql/init 9 +localhost stage/sql/init 12 localhost stage/sql/Opening tables 19 localhost stage/sql/starting 18 execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -847,21 +847,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 24 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_statements_account; @@ -946,21 +946,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 25 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_statements_account; @@ -1045,21 +1045,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 26 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_statements_account; @@ -1143,21 +1143,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 27 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_statements_account; @@ -1240,21 +1240,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1338,21 +1338,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1435,21 +1435,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1532,21 +1532,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1629,21 +1629,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1726,21 +1726,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1823,21 +1823,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1920,21 +1920,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2017,21 +2017,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2121,14 +2121,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2225,7 +2225,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2322,7 +2322,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2419,7 +2419,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2516,7 +2516,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2613,7 +2613,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2710,7 +2710,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2807,7 +2807,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2904,7 +2904,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3001,7 +3001,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3098,7 +3098,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3195,7 +3195,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3292,7 +3292,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3389,7 +3389,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3486,7 +3486,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; diff --git a/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_u_no_h.result b/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_u_no_h.result index af53562..b80653c 100644 --- a/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_u_no_h.result +++ b/mysql-test/suite/perfschema/r/event_aggregate_no_a_no_u_no_h.result @@ -189,14 +189,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -273,14 +273,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -369,14 +369,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -454,14 +454,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -551,14 +551,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -637,14 +637,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -735,14 +735,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_statements_account; @@ -820,14 +820,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_statements_account; @@ -905,14 +905,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_statements_account; @@ -989,14 +989,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_statements_account; @@ -1072,14 +1072,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1156,14 +1156,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1239,14 +1239,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1322,14 +1322,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1405,14 +1405,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1488,14 +1488,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1571,14 +1571,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1654,14 +1654,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1737,14 +1737,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1820,14 +1820,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1910,7 +1910,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1993,7 +1993,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2076,7 +2076,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2159,7 +2159,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2242,7 +2242,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2325,7 +2325,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2408,7 +2408,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2491,7 +2491,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2574,7 +2574,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2657,7 +2657,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2740,7 +2740,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2823,7 +2823,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2906,7 +2906,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2989,7 +2989,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; diff --git a/mysql-test/suite/perfschema/r/event_aggregate_no_h.result b/mysql-test/suite/perfschema/r/event_aggregate_no_h.result index 1209d37..011e68e 100644 --- a/mysql-test/suite/perfschema/r/event_aggregate_no_h.result +++ b/mysql-test/suite/perfschema/r/event_aggregate_no_h.result @@ -219,14 +219,14 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 execute dump_stages_host; @@ -235,14 +235,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -337,7 +337,7 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 0 @@ -349,7 +349,7 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 0 @@ -363,14 +363,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -491,24 +491,24 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 execute dump_stages_host; @@ -517,14 +517,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -638,12 +638,12 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 0 @@ -655,12 +655,12 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 0 @@ -674,14 +674,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -821,34 +821,34 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 execute dump_stages_host; @@ -857,14 +857,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -997,17 +997,17 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 0 @@ -1019,17 +1019,17 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 0 @@ -1043,14 +1043,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -1209,44 +1209,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 6 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; @@ -1255,14 +1255,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_statements_account; @@ -1408,44 +1408,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 6 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; @@ -1454,14 +1454,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_statements_account; @@ -1607,44 +1607,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 6 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; @@ -1653,14 +1653,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_statements_account; @@ -1805,44 +1805,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 6 execute dump_stages_host; @@ -1851,14 +1851,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_statements_account; @@ -2002,44 +2002,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -2048,14 +2048,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2200,44 +2200,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -2246,14 +2246,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2397,44 +2397,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -2443,14 +2443,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2594,44 +2594,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -2640,14 +2640,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2791,44 +2791,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -2837,14 +2837,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2988,44 +2988,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -3034,14 +3034,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3185,44 +3185,44 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -3231,14 +3231,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3404,22 +3404,22 @@ execute dump_stages_user; user event_name count_star user1 stage/sql/checking permissions 4 user1 stage/sql/closing tables 11 -user1 stage/sql/init 3 +user1 stage/sql/init 4 user1 stage/sql/Opening tables 7 user1 stage/sql/starting 7 user2 stage/sql/checking permissions 4 user2 stage/sql/closing tables 10 -user2 stage/sql/init 3 +user2 stage/sql/init 4 user2 stage/sql/Opening tables 6 user2 stage/sql/starting 7 user3 stage/sql/checking permissions 4 user3 stage/sql/closing tables 10 -user3 stage/sql/init 3 +user3 stage/sql/init 4 user3 stage/sql/Opening tables 6 user3 stage/sql/starting 7 user4 stage/sql/checking permissions 4 user4 stage/sql/closing tables 10 -user4 stage/sql/init 3 +user4 stage/sql/init 4 user4 stage/sql/Opening tables 6 user4 stage/sql/starting 7 execute dump_stages_host; @@ -3428,14 +3428,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3625,14 +3625,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3822,14 +3822,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4026,7 +4026,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4223,7 +4223,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4420,7 +4420,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4617,7 +4617,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4814,7 +4814,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5011,7 +5011,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5208,7 +5208,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5405,7 +5405,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5602,7 +5602,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5799,7 +5799,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5996,7 +5996,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -6165,7 +6165,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -6278,7 +6278,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -6363,7 +6363,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; diff --git a/mysql-test/suite/perfschema/r/event_aggregate_no_u.result b/mysql-test/suite/perfschema/r/event_aggregate_no_u.result index 39da978..dba6860 100644 --- a/mysql-test/suite/perfschema/r/event_aggregate_no_u.result +++ b/mysql-test/suite/perfschema/r/event_aggregate_no_u.result @@ -231,7 +231,7 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 execute dump_stages_user; @@ -240,21 +240,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 4 localhost stage/sql/closing tables 11 -localhost stage/sql/init 3 +localhost stage/sql/init 4 localhost stage/sql/Opening tables 7 localhost stage/sql/starting 6 execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -346,7 +346,7 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 0 @@ -360,21 +360,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 4 localhost stage/sql/closing tables 11 -localhost stage/sql/init 3 +localhost stage/sql/init 4 localhost stage/sql/Opening tables 7 localhost stage/sql/starting 6 execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -485,12 +485,12 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 execute dump_stages_user; @@ -499,21 +499,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 8 localhost stage/sql/closing tables 21 -localhost stage/sql/init 6 +localhost stage/sql/init 8 localhost stage/sql/Opening tables 13 localhost stage/sql/starting 12 execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -615,12 +615,12 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 0 @@ -634,21 +634,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 8 localhost stage/sql/closing tables 21 -localhost stage/sql/init 6 +localhost stage/sql/init 8 localhost stage/sql/Opening tables 13 localhost stage/sql/starting 12 execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -769,17 +769,17 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 execute dump_stages_user; @@ -788,21 +788,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 12 localhost stage/sql/closing tables 31 -localhost stage/sql/init 9 +localhost stage/sql/init 12 localhost stage/sql/Opening tables 19 localhost stage/sql/starting 18 execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -914,17 +914,17 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 0 @@ -938,21 +938,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 12 localhost stage/sql/closing tables 31 -localhost stage/sql/init 9 +localhost stage/sql/init 12 localhost stage/sql/Opening tables 19 localhost stage/sql/starting 18 execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -1083,22 +1083,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; @@ -1107,21 +1107,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 24 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_statements_account; @@ -1239,22 +1239,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; @@ -1263,21 +1263,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 25 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_statements_account; @@ -1395,22 +1395,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; @@ -1419,21 +1419,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 26 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_statements_account; @@ -1550,22 +1550,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; @@ -1574,21 +1574,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 27 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_statements_account; @@ -1704,22 +1704,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -1728,21 +1728,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1859,22 +1859,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -1883,21 +1883,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2013,22 +2013,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -2037,21 +2037,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2167,22 +2167,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -2191,21 +2191,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2321,22 +2321,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -2345,21 +2345,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2475,22 +2475,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -2499,21 +2499,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2629,22 +2629,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -2653,21 +2653,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2807,21 +2807,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2961,21 +2961,21 @@ execute dump_stages_host; host event_name count_star localhost stage/sql/checking permissions 16 localhost stage/sql/closing tables 41 -localhost stage/sql/init 12 +localhost stage/sql/init 16 localhost stage/sql/Opening tables 25 localhost stage/sql/starting 28 execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3122,14 +3122,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3283,7 +3283,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3437,7 +3437,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3591,7 +3591,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3745,7 +3745,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3899,7 +3899,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4053,7 +4053,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4207,7 +4207,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4361,7 +4361,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4515,7 +4515,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4669,7 +4669,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4823,7 +4823,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4949,7 +4949,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5047,7 +5047,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -5145,7 +5145,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; diff --git a/mysql-test/suite/perfschema/r/event_aggregate_no_u_no_h.result b/mysql-test/suite/perfschema/r/event_aggregate_no_u_no_h.result index 818c61e..428d290 100644 --- a/mysql-test/suite/perfschema/r/event_aggregate_no_u_no_h.result +++ b/mysql-test/suite/perfschema/r/event_aggregate_no_u_no_h.result @@ -201,7 +201,7 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 execute dump_stages_user; @@ -212,14 +212,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -302,7 +302,7 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 0 @@ -318,14 +318,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 4 stage/sql/closing tables 11 -stage/sql/init 3 +stage/sql/init 4 stage/sql/Opening tables 7 stage/sql/starting 6 execute dump_statements_account; @@ -427,12 +427,12 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 execute dump_stages_user; @@ -443,14 +443,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -543,12 +543,12 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 0 @@ -564,14 +564,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 8 stage/sql/closing tables 21 -stage/sql/init 6 +stage/sql/init 8 stage/sql/Opening tables 13 stage/sql/starting 12 execute dump_statements_account; @@ -683,17 +683,17 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 execute dump_stages_user; @@ -704,14 +704,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -814,17 +814,17 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 0 @@ -840,14 +840,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 12 stage/sql/closing tables 31 -stage/sql/init 9 +stage/sql/init 12 stage/sql/Opening tables 19 stage/sql/starting 18 execute dump_statements_account; @@ -969,22 +969,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 6 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; @@ -995,14 +995,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 24 execute dump_statements_account; @@ -1111,22 +1111,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 6 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; @@ -1137,14 +1137,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 25 execute dump_statements_account; @@ -1253,22 +1253,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 6 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; @@ -1279,14 +1279,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 26 execute dump_statements_account; @@ -1394,22 +1394,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 6 execute dump_stages_user; @@ -1420,14 +1420,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 27 execute dump_statements_account; @@ -1534,22 +1534,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -1560,14 +1560,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1675,22 +1675,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -1701,14 +1701,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1815,22 +1815,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -1841,14 +1841,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -1955,22 +1955,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -1981,14 +1981,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2095,22 +2095,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -2121,14 +2121,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2235,22 +2235,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -2261,14 +2261,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2375,22 +2375,22 @@ execute dump_stages_account; user host event_name count_star user1 localhost stage/sql/checking permissions 4 user1 localhost stage/sql/closing tables 11 -user1 localhost stage/sql/init 3 +user1 localhost stage/sql/init 4 user1 localhost stage/sql/Opening tables 7 user1 localhost stage/sql/starting 7 user2 localhost stage/sql/checking permissions 4 user2 localhost stage/sql/closing tables 10 -user2 localhost stage/sql/init 3 +user2 localhost stage/sql/init 4 user2 localhost stage/sql/Opening tables 6 user2 localhost stage/sql/starting 7 user3 localhost stage/sql/checking permissions 4 user3 localhost stage/sql/closing tables 10 -user3 localhost stage/sql/init 3 +user3 localhost stage/sql/init 4 user3 localhost stage/sql/Opening tables 6 user3 localhost stage/sql/starting 7 user4 localhost stage/sql/checking permissions 4 user4 localhost stage/sql/closing tables 10 -user4 localhost stage/sql/init 3 +user4 localhost stage/sql/init 4 user4 localhost stage/sql/Opening tables 6 user4 localhost stage/sql/starting 7 execute dump_stages_user; @@ -2401,14 +2401,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2541,14 +2541,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2681,14 +2681,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2821,14 +2821,14 @@ execute dump_stages_global; event_name count_star stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -2968,7 +2968,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3108,7 +3108,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3248,7 +3248,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3388,7 +3388,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3528,7 +3528,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3668,7 +3668,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3808,7 +3808,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -3948,7 +3948,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4088,7 +4088,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4228,7 +4228,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4368,7 +4368,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4480,7 +4480,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4564,7 +4564,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; @@ -4648,7 +4648,7 @@ execute dump_stages_history; event_name count(event_name) stage/sql/checking permissions 16 stage/sql/closing tables 41 -stage/sql/init 12 +stage/sql/init 16 stage/sql/Opening tables 25 stage/sql/starting 28 execute dump_statements_account; diff --git a/sql/field.cc b/sql/field.cc index 5a618a5..bff8e90 100644 --- a/sql/field.cc +++ b/sql/field.cc @@ -1387,7 +1387,9 @@ bool Field::can_optimize_range(const Item_bool_func *cond, { DBUG_ASSERT(cmp_type() != TIME_RESULT); // Handled in Field_temporal DBUG_ASSERT(cmp_type() != STRING_RESULT); // Handled in Field_str descendants - return item->cmp_type() != TIME_RESULT; + return (item->cmp_type() != TIME_RESULT) && + !(item->type() == Item::SUBSELECT_ITEM && + ((Item_subselect *)item)->is_expensive()); } diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index fcdb2aa..c7295f1 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -5794,6 +5794,8 @@ bool fix_escape_item(THD *thd, Item *escape_item, String *tmp_str, bool escape_used_in_parsing, CHARSET_INFO *cmp_cs, int *escape) { + if (thd->lex->context_analysis_only) + return false; /* ESCAPE clause accepts only constant arguments and Item_param. @@ -5803,9 +5805,13 @@ bool fix_escape_item(THD *thd, Item *escape_item, String *tmp_str, reach val_int(), so we won't need the value. CONTEXT_ANALYSIS_ONLY_DERIVED being a notable exception here. */ +#if 0 if (!escape_item->const_during_execution() || (!escape_item->const_item() && !(thd->lex->context_analysis_only & ~CONTEXT_ANALYSIS_ONLY_DERIVED))) +#else + if (!escape_item->const_item()) +#endif { my_error(ER_WRONG_ARGUMENTS,MYF(0),"ESCAPE"); return TRUE; diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc index 9e6c205..ff366ad 100644 --- a/sql/item_subselect.cc +++ b/sql/item_subselect.cc @@ -1019,7 +1019,11 @@ table_map Item_subselect::used_tables() const bool Item_subselect::const_item() const { DBUG_ASSERT(thd); - return (thd->lex->context_analysis_only || with_recursive_reference ? + if (unit->executed_at_prepare_phase() && !thd->lex->context_analysis_only) + return true; + return (!(thd->lex->m_sql_cmd && + thd->lex->m_sql_cmd->is_prepared()) || + with_recursive_reference ? FALSE : forced_const || const_item_cache); } diff --git a/sql/sql_cache.cc b/sql/sql_cache.cc index b284189..a22ed36 100644 --- a/sql/sql_cache.cc +++ b/sql/sql_cache.cc @@ -4214,6 +4214,8 @@ my_bool Query_cache::ask_handler_allowance(THD *thd, for (; tables_used; tables_used= tables_used->next_global) { + if (tables_used->is_view_or_derived()) + continue; TABLE *table; handler *handler; if (!(table= tables_used->table)) diff --git a/sql/sql_class.cc b/sql/sql_class.cc index c6a929d..08dc375 100644 --- a/sql/sql_class.cc +++ b/sql/sql_class.cc @@ -643,6 +643,7 @@ THD::THD(my_thread_id id, bool is_wsrep_applier) table_map_for_update(0), m_examined_row_count(0), accessed_rows_and_keys(0), + accessed_rows_and_keys_at_exec_start(0), m_digest(NULL), m_statement_psi(NULL), m_transaction_psi(NULL), diff --git a/sql/sql_class.h b/sql/sql_class.h index b54f35a..e0c3256 100644 --- a/sql/sql_class.h +++ b/sql/sql_class.h @@ -3420,6 +3420,7 @@ class THD: public THD_count, /* this must be first */ changed or written. */ ulonglong accessed_rows_and_keys; + ulonglong accessed_rows_and_keys_at_exec_start; /** Check if the number of rows accessed by a statement exceeded @@ -3427,7 +3428,8 @@ class THD: public THD_count, /* this must be first */ */ inline void check_limit_rows_examined() { - if (++accessed_rows_and_keys > lex->limit_rows_examined_cnt) + if ((++accessed_rows_and_keys - accessed_rows_and_keys_at_exec_start) > + lex->limit_rows_examined_cnt) set_killed(ABORT_QUERY); } diff --git a/sql/sql_delete.cc b/sql/sql_delete.cc index 18d4b4b..c030fc2 100644 --- a/sql/sql_delete.cc +++ b/sql/sql_delete.cc @@ -1655,7 +1655,6 @@ bool Sql_cmd_delete::prepare_inner(THD *thd) if (!(join= new (thd->mem_root) JOIN(thd, empty_list, select_options, result))) DBUG_RETURN(TRUE); - THD_STAGE_INFO(thd, stage_init); select_lex->join= join; thd->lex->used_tables=0; if ((err= join->prepare(table_list, select_lex->where, diff --git a/sql/sql_delete.h b/sql/sql_delete.h index ad018ed..50d37ce 100644 --- a/sql/sql_delete.h +++ b/sql/sql_delete.h @@ -84,7 +84,7 @@ class Sql_cmd_delete final : public Sql_cmd_dml private: /** - @biefSpecial handling of single-table deletes after prepare phase + @brief Special handling of single-table deletes after prepare phase */ bool delete_from_single_table(THD *thd); diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc index 6e042d2..5228cff 100644 --- a/sql/sql_insert.cc +++ b/sql/sql_insert.cc @@ -5331,3 +5331,130 @@ void select_create::abort_result_set() DBUG_VOID_RETURN; } + + +bool Sql_cmd_insert_base::precheck(THD *thd) +{ +#if 0 + /* + Since INSERT DELAYED doesn't support temporary tables, we could + not pre-open temporary tables for SQLCOM_INSERT / SQLCOM_REPLACE. + Open them here instead. + */ + if (first_table->lock_type != TL_WRITE_DELAYED && + thd->open_temporary_tables(lex->query_tables)) + return true; + + if (insert_precheck(thd, lex->query_tables)) + return true; + + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_INSERT_REPLACE); + + return false; + +#ifdef WITH_WSREP +wsrep_error_label: +#endif +#endif + return true; +} + + +bool Sql_cmd_insert_base::prepare_inner(THD *thd) +{ +#if 0 + SELECT_LEX *const select_lex= thd->lex->first_select_lex(); + TABLE_LIST *const table_list= select_lex->get_table_list(); + Name_resolution_context *context= &select_lex->context; + Name_resolution_context_state ctx_state; + const bool select_insert= insert_many_values.elements == 0; + bool insert_into_view= (table_list->view != 0); + TABLE *table; + + DBUG_ENTER("Sql_cmd_insert_base::prepare_inner"); + + (void) read_statistics_for_tables_if_needed(thd, table_list); + + { + if (mysql_handle_derived(lex, DT_INIT)) + DBUG_RETURN(TRUE); + if (mysql_handle_derived(lex, DT_MERGE_FOR_INSERT)) + DBUG_RETURN(TRUE); + if (mysql_handle_derived(lex, DT_PREPARE)) + DBUG_RETURN(TRUE); + } + + insert_field_list= thd->lex->field_list; + + if (duplicates == DUP_UPDATE) + { + /* it should be allocated before Item::fix_fields() */ + if (table_list->set_insert_values(thd->mem_root)) + DBUG_RETURN(TRUE); + } + + table= table_list->table; + + if (table->file->check_if_updates_are_ignored("INSERT")) + DBUG_RETURN(-1); + + if (!table_list->single_table_updatable()) + { + my_error(ER_NON_INSERTABLE_TABLE, MYF(0), table_list->alias.str, "INSERT"); + DBUG_RETURN(TRUE); + } + + /* + first table in list is the one we'll INSERT into, requires INSERT_ACL. + all others require SELECT_ACL only. the ACL requirement below is for + new leaves only anyway (view-constituents), so check for SELECT rather + than INSERT. + */ + if (setup_tables_and_check_access(thd, + &select_lex->context, + &select_lex->top_join_list, + table_list, + select_lex->leaf_tables, + select_insert, INSERT_ACL, SELECT_ACL, + TRUE)) + DBUG_RETURN(TRUE); + + if (insert_into_view && !insert_field_list.elements) + { + thd->lex->empty_field_list_on_rset= 1; + if (!table_list->table || table_list->is_multitable()) + { + my_error(ER_VIEW_NO_INSERT_FIELD_LIST, MYF(0), + table_list->view_db.str, table_list->view_name.str); + DBUG_RETURN(TRUE); + } + if (insert_view_fields(thd, &insert_field_list, table_list)) + DBUG_RETURN(TRUE); + } + + if (thd->lex->has_returning()) + { + status_var_increment(thd->status_var.feature_insert_returning); + + /* This is INSERT ... RETURNING. It will return output to the client */ + if (thd->lex->analyze_stmt) + { + /* + Actually, it is ANALYZE .. INSERT .. RETURNING. We need to produce + output and then discard it. + */ + result= new (thd->mem_root) select_send_analyze(thd); + save_protocol= thd->protocol; + thd->protocol= new Protocol_discard(thd); + } + else + { + if (!(result= new (thd->mem_root) select_send(thd))) + DBUG_RETURN(TRUE); + } + } +#else + return false; +#endif +} + diff --git a/sql/sql_insert.h b/sql/sql_insert.h index 8b034c2..eae3b53 100644 --- a/sql/sql_insert.h +++ b/sql/sql_insert.h @@ -18,6 +18,7 @@ #include "sql_class.h" /* enum_duplicates */ #include "sql_list.h" +#include "sql_base.h" /* Instead of including sql_lex.h we add this typedef here */ typedef List<Item> List_item; @@ -51,4 +52,139 @@ bool binlog_drop_table(THD *thd, TABLE *table); inline void kill_delayed_threads(void) {} #endif + +/** + Base class for all INSERT and REPLACE statements. Abstract class that + is inherited by Sql_cmd_insert_values and Sql_cmd_insert_select. +*/ + +class Sql_cmd_insert_base : public Sql_cmd_dml +{ +protected: + virtual bool precheck(THD *thd) override; + + virtual bool prepare_inner(THD *thd) override; + +private: + bool resolve_update_expressions(THD *thd); + bool prepare_values_table(THD *thd); + bool resolve_values_table_columns(THD *thd); + + /** + Field list to insert/replace + + One of two things: + 1. For the INSERT/REPLACE ... (col1, ... colN) VALUES ... syntax + this is a list of col1, ..., colN fields. + 2. For the INSERT/REPLACE ... SET col1=x1, ... colM=xM syntax extension + this is a list of col1, ... colM fields as well. + */ + List<Item> insert_field_list; + +public: + /* + field_list was created for view and should be removed before PS/SP + rexecuton + */ + bool empty_field_list_on_rset; + + DML_prelocking_strategy *get_dml_prelocking_strategy() + { + return &dml_prelocking_strategy; + } + +protected: + const bool is_replace; + + /** + Row data to insert/replace + + One of two things: + 1. For the INSERT/REPLACE ... VALUES (row1), (row2), ... (rowN) syntax + the list contains N List_item lists: one List_item per row. + 2. For the INSERT/REPLACE ... SET col1=x1, ... colM=xM syntax extension + this list contains only 1 List_item of M data values: this way we + emulate this syntax: + INSERT/REPLACE ... (col1, ... colM) VALUE (x1, ..., xM); + */ + List<List_item> insert_many_values; + + /* + Number of values per row in insert_many_values, available after resolving + */ + uint value_count; + + /* ON DUPLICATE KEY UPDATE field list */ + List<Item> update_field_list; + + const enum_duplicates duplicates; + + Protocol *save_protocol; /**< needed for ANALYZE .. INSERT .. RETURNING */ + + explicit Sql_cmd_insert_base(bool is_replace_arg, + enum_duplicates duplicates_arg) + : empty_field_list_on_rset(false), + is_replace(is_replace_arg), + value_count(0), + duplicates(duplicates_arg), + save_protocol(NULL) + {} + +#if 0 + virtual void cleanup(THD *thd) override + { + if (empty_field_list_on_rset) + { + empty_field_list_on_rset = false; + insert_field_list.empty(); + } + } +#endif + +private: + + /* The prelocking strategy used when opening the used tables */ + DML_prelocking_strategy dml_prelocking_strategy; + +}; + + +/** + Class that implements INSERT ... VALUES and REPLACE ... VALUES statements. +*/ + +class Sql_cmd_insert_values final : public Sql_cmd_insert_base +{ +public: + explicit Sql_cmd_insert_values(bool is_replace_arg, + enum_duplicates duplicates_arg) + : Sql_cmd_insert_base(is_replace_arg, duplicates_arg) {} + + enum_sql_command sql_command_code() const + { + return is_replace ? SQLCOM_REPLACE : SQLCOM_INSERT; + } + +}; + + +/** + Class that implements INSERT ... SELECT and REPLACE ... SELECT statements. +*/ + +class Sql_cmd_insert_select final : public Sql_cmd_insert_base +{ +public: + explicit Sql_cmd_insert_select(bool is_replace_arg, + enum_duplicates duplicates_arg) + : Sql_cmd_insert_base(is_replace_arg, duplicates_arg) {} + + enum_sql_command sql_command_code() const + { + return is_replace ? SQLCOM_REPLACE_SELECT : SQLCOM_INSERT_SELECT; + } +}; + + + #endif /* SQL_INSERT_INCLUDED */ diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 8a24d2f..0b08fbc 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -42,6 +42,8 @@ #endif #include "sql_update.h" // class Sql_cmd_update #include "sql_delete.h" // class Sql_cmd_delete +#include "sql_insert.h" // class Sql_cmd_insert + void LEX::parse_error(uint err_number) { @@ -10357,13 +10359,19 @@ SELECT_LEX *LEX::parsed_subselect(SELECT_LEX_UNIT *unit) bool LEX::parsed_insert_select(SELECT_LEX *first_select) { + bool is_insert_or_replace= false; + bool is_replace= false; if (sql_command == SQLCOM_INSERT || sql_command == SQLCOM_REPLACE) { + is_insert_or_replace= true; if (sql_command == SQLCOM_INSERT) sql_command= SQLCOM_INSERT_SELECT; else + { + is_replace= true; sql_command= SQLCOM_REPLACE_SELECT; + } } insert_select_hack(first_select); if (check_main_unit_semantics()) @@ -10373,6 +10381,23 @@ bool LEX::parsed_insert_select(SELECT_LEX *first_select) SELECT_LEX *blt __attribute__((unused))= pop_select(); DBUG_ASSERT(blt == &builtin_select); push_select(first_select); + + if (is_insert_or_replace) + { + if (sql_command == SQLCOM_INSERT || sql_command == SQLCOM_REPLACE) + { + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_insert_values(is_replace, + duplicates))) + return true; + } + else + { + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_insert_select(is_replace, + duplicates))) + return true; + } + } + return false; } @@ -10454,6 +10479,8 @@ bool LEX::select_finalize(st_select_lex_unit *expr) { sql_command= SQLCOM_SELECT; selects_allow_procedure= TRUE; + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_select(result))) + return true; if (set_main_unit(expr)) return true; return check_main_unit_semantics(); @@ -11933,3 +11960,27 @@ bool SELECT_LEX_UNIT::is_derived_eliminated() const return true; return derived->table->map & outer_select()->join->eliminated_tables; } + +bool SELECT_LEX_UNIT::executed_at_prepare_phase() +{ + for (SELECT_LEX *sl= first_select(); sl; sl= sl->next_select()) + { + if (!sl->executed_at_prepare_phase()) + return false; + } + return true; +} + +bool SELECT_LEX::executed_at_prepare_phase() +{ + if (table_list.elements || is_correlated) + return false; + for (st_select_lex_unit *unit= first_inner_unit(); + unit; + unit= unit->next_unit()) + { + if (!unit->executed_at_prepare_phase()) + return false; + } + return true; +} diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 5a7fa14..491ea1c 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -1034,6 +1034,8 @@ class st_select_lex_unit: public st_select_lex_node { bool explainable() const; + bool executed_at_prepare_phase(); + void reset_distinct(); void fix_distinct(); @@ -1480,6 +1482,8 @@ class st_select_lex: public st_select_lex_node ORDER *order, enum_query_type query_type); void print_limit(THD *thd, String *str, enum_query_type query_type); + bool prepare(THD *thd, select_result *result); + bool exec(THD *thd); void fix_prepare_information(THD *thd, Item **conds, Item **having_conds); /* Destroy the used execution plan (JOIN) of this subtree (this @@ -1653,6 +1657,7 @@ class st_select_lex: public st_select_lex_node bool is_unit_nest() { return (nest_flags & UNIT_NEST_FL); } void mark_as_unit_nest() { nest_flags= UNIT_NEST_FL; } bool is_sj_conversion_prohibited(THD *thd); + bool executed_at_prepare_phase(); }; typedef class st_select_lex SELECT_LEX; diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 67353a1..c7bc972 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -3907,7 +3907,9 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) case SQLCOM_SHOW_COLLATIONS: case SQLCOM_SHOW_STORAGE_ENGINES: case SQLCOM_SHOW_PROFILE: +#if 0 case SQLCOM_SELECT: +#endif { #ifdef WITH_WSREP if (lex->sql_command == SQLCOM_SELECT) @@ -4382,6 +4384,17 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) res = mysql_checksum_table(thd, first_table, &lex->check_opt); break; } + case SQLCOM_SELECT: + { + res = lex->m_sql_cmd->execute(thd); + break; + } +#if 0 + case SQLCOM_REPLACE: + case SQLCOM_INSERT: + case SQLCOM_REPLACE_SELECT: + case SQLCOM_INSERT_SELECT: +#endif case SQLCOM_UPDATE: case SQLCOM_UPDATE_MULTI: case SQLCOM_DELETE: @@ -4394,6 +4407,7 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) thd->abort_on_warning= 0; break; } +#if 1 case SQLCOM_REPLACE: if ((res= generate_incident_event(thd))) break; @@ -4653,6 +4667,7 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) break; } +#endif case SQLCOM_DROP_SEQUENCE: case SQLCOM_DROP_TABLE: { @@ -7340,6 +7355,7 @@ void THD::reset_for_next_command(bool do_clear_error) get_stmt_da()->reset_for_next_command(); m_sent_row_count= m_examined_row_count= 0; accessed_rows_and_keys= 0; + accessed_rows_and_keys_at_exec_start= 0; reset_slow_query_state(); @@ -7476,6 +7492,8 @@ void create_select_for_variable(THD *thd, LEX_CSTRING *var_name) lex= thd->lex; lex->init_select(); lex->sql_command= SQLCOM_SELECT; + lex->m_sql_cmd= new (thd->mem_root) Sql_cmd_select(thd->lex->result); + /* We set the name of Item to @@session.var_name because that then is used as the column name in the output. diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc index 22780c8..0bbde42 100644 --- a/sql/sql_prepare.cc +++ b/sql/sql_prepare.cc @@ -2268,6 +2268,48 @@ static bool check_prepared_statement(Prepared_statement *stmt) lex->m_sql_cmd->unprepare(thd); break; + case SQLCOM_SELECT: +#if 0 + if (lex->m_sql_cmd == NULL && + !(lex->m_sql_cmd= + new (thd->mem_root) Sql_cmd_select(thd->lex->result))) + { + res= 1; + break; + } +#endif + lex->m_sql_cmd->set_owner(stmt); + res = lex->m_sql_cmd->prepare(thd); + if (res == 2) + { + /* Statement and field info has already been sent */ + DBUG_RETURN(FALSE); + } + if (!res && !lex->describe && !lex->analyze_stmt && !stmt->is_sql_prepare()) + { + SELECT_LEX_UNIT *const unit = &lex->unit; + /* Make copy of item list, as change_columns may change it */ + SELECT_LEX_UNIT* master_unit= unit->first_select()->master_unit(); + bool is_union_op= + master_unit->is_unit_op() || master_unit->fake_select_lex; + + List<Item> fields(is_union_op ? unit->item_list : + lex->first_select_lex()->item_list); + + /* Change columns if a procedure like analyse() */ + res= (unit->last_procedure && + unit->last_procedure->change_columns(thd, fields)); + + if (res || send_prep_stmt(stmt, lex->result->field_count(fields)) || + lex->result->send_result_set_metadata(fields, + Protocol::SEND_EOF) || + thd->protocol->flush()) + res= true; + } + if (!res) + lex->m_sql_cmd->unprepare(thd); + break; + /* The following allow WHERE clause, so they must be tested like SELECT */ case SQLCOM_SHOW_DATABASES: case SQLCOM_SHOW_TABLES: @@ -2285,7 +2327,9 @@ static bool check_prepared_statement(Prepared_statement *stmt) case SQLCOM_SHOW_STATUS_FUNC: case SQLCOM_SHOW_STATUS_PACKAGE: case SQLCOM_SHOW_STATUS_PACKAGE_BODY: +#if 0 case SQLCOM_SELECT: +#endif res= mysql_test_select(stmt, tables); if (res == 2) { @@ -2469,12 +2513,14 @@ static bool check_prepared_statement(Prepared_statement *stmt) lex->describe, lex->analyze_stmt) || send_prep_stmt(stmt, result.field_count(field_list)) || result.send_result_set_metadata(field_list, - Protocol::SEND_EOF); + Protocol::SEND_EOF) || + thd->protocol->flush(); + } + else if (lex->sql_command != SQLCOM_SELECT) + { + res= send_prep_stmt(stmt, 0) || + thd->protocol->flush(); } - else - res= send_prep_stmt(stmt, 0); - if (!res) - thd->protocol->flush(); } DBUG_RETURN(FALSE); } diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 4b01a96..26354d3 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -55,6 +55,9 @@ #include "sql_cte.h" #include "sql_window.h" #include "tztime.h" +#ifdef WITH_WSREP +#include "wsrep_mysqld.h" +#endif #include "debug_sync.h" // DEBUG_SYNC #include <m_ctype.h> @@ -4989,21 +4992,22 @@ void JOIN::cleanup_item_list(List<Item> &items) const 0 otherwise */ -select_handler *find_select_handler(THD *thd, - SELECT_LEX* select_lex) +select_handler *SELECT_LEX::find_select_handler(THD *thd) { - if (select_lex->next_select()) + if (next_select()) return 0; - if (select_lex->master_unit()->outer_select()) + if (master_unit()->outer_select()) return 0; TABLE_LIST *tbl= nullptr; - // For SQLCOM_INSERT_SELECT the server takes TABLE_LIST - // from thd->lex->query_tables and skips its first table - // b/c it is the target table for the INSERT..SELECT. + /* + For SQLCOM_INSERT_SELECT the server takes TABLE_LIST + from thd->lex->query_tables and skips its first table + b/c it is the target table for the INSERT..SELECT. + */ if (thd->lex->sql_command != SQLCOM_INSERT_SELECT) { - tbl= select_lex->join->tables_list; + tbl= join->tables_list; } else if (thd->lex->query_tables && thd->lex->query_tables->next_global) @@ -5020,7 +5024,7 @@ select_handler *find_select_handler(THD *thd, handlerton *ht= tbl->table->file->partition_ht(); if (!ht->create_select) continue; - select_handler *sh= ht->create_select(thd, select_lex); + select_handler *sh= ht->create_select(thd, this); return sh; } return 0; @@ -5125,7 +5129,6 @@ mysql_select(THD *thd, TABLE_LIST *tables, List<Item> &fields, COND *conds, if (!(join= new (thd->mem_root) JOIN(thd, fields, select_options, result))) DBUG_RETURN(TRUE); - THD_STAGE_INFO(thd, stage_init); thd->lex->used_tables=0; if ((err= join->prepare(tables, conds, og_num, order, false, group, having, proc_param, select_lex, unit))) @@ -5136,7 +5139,7 @@ mysql_select(THD *thd, TABLE_LIST *tables, List<Item> &fields, COND *conds, thd->get_stmt_da()->reset_current_row_for_warning(1); /* Look for a table owned by an engine with the select_handler interface */ - select_lex->pushdown_select= find_select_handler(thd, select_lex); + select_lex->pushdown_select= select_lex->find_select_handler(thd); if ((err= join->optimize())) { @@ -12720,7 +12723,8 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, (select thats very heavy) => is a constant here eg: (select avg(order_cost) from orders) => constant but expensive */ - if (!keyuse->val->used_tables() && !thd->lex->describe) + if (keyuse->val->const_item() && !keyuse->val->is_expensive() && + !thd->lex->describe) { // Compare against constant store_key_item tmp(thd, keyinfo->key_part[i].field, @@ -32348,6 +32352,9 @@ static void MYSQL_DML_START(THD *thd) { switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + MYSQL_INSERT_START(thd->query()); + break; case SQLCOM_UPDATE: MYSQL_UPDATE_START(thd->query()); break; @@ -32370,6 +32377,9 @@ static void MYSQL_DML_DONE(THD *thd, int rc) { switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + MYSQL_SELECT_DONE(rc, (rc ? 0 : (ulong) (thd->limit_found_rows))); + break; case SQLCOM_UPDATE: MYSQL_UPDATE_DONE( rc, @@ -32437,8 +32447,6 @@ bool Sql_cmd_dml::prepare(THD *thd) MYSQL_DML_START(thd); - lex->context_analysis_only|= CONTEXT_ANALYSIS_ONLY_DERIVED; - if (open_tables_for_query(thd, lex->query_tables, &table_count, 0, get_dml_prelocking_strategy())) { @@ -32451,8 +32459,6 @@ bool Sql_cmd_dml::prepare(THD *thd) if (prepare_inner(thd)) goto err; - lex->context_analysis_only&= ~CONTEXT_ANALYSIS_ONLY_DERIVED; - set_prepared(); unit->set_prepared(); @@ -32528,6 +32534,7 @@ bool Sql_cmd_dml::execute(THD *thd) { if (lock_tables(thd, lex->query_tables, table_count, 0)) goto err; + query_cache_store_query(thd, thd->lex->query_tables); } unit->set_limit(select_lex); @@ -32581,8 +32588,266 @@ bool Sql_cmd_dml::execute(THD *thd) bool Sql_cmd_dml::execute_inner(THD *thd) { SELECT_LEX_UNIT *unit = &lex->unit; - SELECT_LEX *select_lex= unit->first_select(); - JOIN *join= select_lex->join; + DBUG_ENTER("Sql_cmd_dml::execute_inner"); + + if (unit->is_unit_op() || unit->fake_select_lex) + { + if (unit->exec()) + DBUG_RETURN(true); + } +#if 1 + else + { + SELECT_LEX *select_lex= unit->first_select(); + if (select_lex->exec(thd)) + DBUG_RETURN(true); + } +#endif + + DBUG_RETURN(false); +} + + +bool Sql_cmd_select::precheck(THD *thd) +{ + bool rc= false; + + privilege_t privileges_requested= SELECT_ACL; + + if (lex->exchange) + { + /* + lex->exchange != NULL implies SELECT .. INTO OUTFILE and this + requires FILE_ACL access. + */ + privileges_requested|= FILE_ACL; + } + + TABLE_LIST *tables = thd->lex->query_tables; + + if (tables) + rc= check_table_access(thd, privileges_requested, + tables, false, UINT_MAX, false); + else + rc= check_access(thd, privileges_requested, + any_db.str, NULL, NULL, false, false); + +#ifdef WITH_WSREP + if (lex->sql_command == SQLCOM_SELECT) + { + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_READ); + } + else + { + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_SHOW); +# ifdef ENABLED_PROFILING + if (lex->sql_command == SQLCOM_SHOW_PROFILE) + thd->profiling.discard_current_query(); +# endif + } +#endif /* WITH_WSREP */ + + if (!rc) + return false; + +#ifdef WITH_WSREP +wsrep_error_label: +#endif + return true; +} + + + +bool Sql_cmd_select::prepare_inner(THD *thd) +{ + bool rc= false; + LEX *lex= thd->lex; + TABLE_LIST *tables= lex->query_tables; + SELECT_LEX_UNIT *const unit = &lex->unit; + + DBUG_ENTER("Sql_cmd_select::prepare_inner"); + + if (!thd->stmt_arena->is_stmt_prepare()) + (void) read_statistics_for_tables_if_needed(thd, tables); + + { + if (mysql_handle_derived(lex, DT_INIT)) + DBUG_RETURN(TRUE); + } + + if (thd->stmt_arena->is_stmt_prepare()) + { + if (!result) + { + Query_arena backup; + Query_arena *arena= thd->activate_stmt_arena_if_needed(&backup); + result= new (thd->mem_root) select_send(thd); + if (arena) + thd->restore_active_arena(arena, &backup); + thd->lex->result= result; + } + rc= unit->prepare(unit->derived, 0, 0); + + } + else + { + if (lex->analyze_stmt) + { + if (result && result->result_interceptor()) + result->result_interceptor()->disable_my_ok_calls(); + else + { + DBUG_ASSERT(thd->protocol); + result= new (thd->mem_root) select_send_analyze(thd); + save_protocol= thd->protocol; + thd->protocol= new Protocol_discard(thd); + } + } + else if (!(result= lex->result)) + result= new (thd->mem_root) select_send(thd); + if (!result) + DBUG_RETURN(TRUE); + + SELECT_LEX *parameters = unit->global_parameters(); + if (!parameters->limit_params.explicit_limit) + { + parameters->limit_params.select_limit = + new (thd->mem_root) Item_int(thd, + (ulonglong) thd->variables.select_limit); + if (parameters->limit_params.select_limit == NULL) + DBUG_RETURN(true); /* purecov: inspected */ + } + ulonglong select_options= 0; + if (lex->describe) + select_options|= SELECT_DESCRIBE; + if (unit->is_unit_op() || unit->fake_select_lex) + select_options|= SELECT_NO_UNLOCK; + rc= unit->prepare(unit->derived, result, select_options); + + if (rc && thd->lex->analyze_stmt && save_protocol) + { + delete thd->protocol; + thd->protocol= save_protocol; + } + } + + DBUG_RETURN(rc); +} + + +bool Sql_cmd_select::execute_inner(THD *thd) +{ + DBUG_ENTER("Sql_cmd_select::execute_inner"); + + thd->status_var.last_query_cost= 0.0; + + bool res= Sql_cmd_dml::execute_inner(thd); + + res|= thd->is_error(); + if (unlikely(res)) + result->abort_result_set(); + + if (result != thd->lex->result) + { + delete result; + result= 0; + } + + if (lex->analyze_stmt) + { + if (save_protocol) + { + delete thd->protocol; + thd->protocol= save_protocol; + } + if (!res) + res= thd->lex->explain->send_explain(thd); + } + + if (thd->lex->describe) + { + if (!res) + res= thd->lex->explain->send_explain(thd); + + if (!res && (thd->lex->describe & DESCRIBE_EXTENDED)) + { + char buff[1024]; + String str(buff,(uint32) sizeof(buff), system_charset_info); + str.length(0); + /* + The warnings system requires input in utf8, @see + mysqld_show_warnings(). + */ + lex->unit.print(&str, QT_EXPLAIN_EXTENDED); + push_warning(thd, Sql_condition::WARN_LEVEL_NOTE, + ER_YES, str.c_ptr_safe()); + } + } + + if (unlikely(thd->killed == ABORT_QUERY && !thd->no_errors)) + { + /* + If LIMIT ROWS EXAMINED interrupted query execution, issue a warning, + continue with normal processing and produce an incomplete query result. + */ + bool saved_abort_on_warning= thd->abort_on_warning; + thd->abort_on_warning= false; + push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN, + ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT, + ER_THD(thd, ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT), + thd->accessed_rows_and_keys - + thd->accessed_rows_and_keys_at_exec_start, + thd->lex->limit_rows_examined->val_uint()); + thd->abort_on_warning= saved_abort_on_warning; + thd->reset_killed(); + } + /* Disable LIMIT ROWS EXAMINED after query execution. */ + thd->lex->limit_rows_examined_cnt= ULONGLONG_MAX; + + /* Count number of empty select queries */ + if (!thd->get_sent_row_count() && !res) + status_var_increment(thd->status_var.empty_queries); + else + status_var_add(thd->status_var.rows_sent, thd->get_sent_row_count()); + + DBUG_RETURN(res); +} + + +bool st_select_lex::prepare(THD *thd, select_result *result) +{ + ulonglong select_options= options | thd->variables.option_bits; + + DBUG_ENTER("st_select_lex::prepare"); + + if (thd->lex->describe) + select_options|= SELECT_DESCRIBE; + + if (!(join= new (thd->mem_root) JOIN(thd, item_list, + select_options, result))) + DBUG_RETURN(true); + + SELECT_LEX_UNIT *unit= master_unit(); + + thd->lex->used_tables=0; + + if (join->prepare(table_list.first, where, + order_list.elements + group_list.elements, + order_list.first, false, group_list.first, + having, thd->lex->proc_list.first, + this, unit)) + DBUG_RETURN(true); + + DBUG_RETURN(false); +} + + +bool st_select_lex::exec(THD *thd) +{ + DBUG_ENTER("st_select_lex::exec"); + + /* Look for a table owned by an engine with the select_handler interface */ + pushdown_select= find_select_handler(thd); if (join->optimize()) goto err; @@ -32596,19 +32861,29 @@ bool Sql_cmd_dml::execute_inner(THD *thd) if (unlikely(thd->is_error())) goto err; + thd->get_stmt_da()->reset_current_row_for_warning(1); + + if (master_unit()->outer_select() == NULL) + thd->accessed_rows_and_keys_at_exec_start= thd->accessed_rows_and_keys; + if (join->exec()) goto err; if (thd->lex->describe & DESCRIBE_EXTENDED) { - select_lex->where= join->conds_history; - select_lex->having= join->having_history; + where= join->conds_history; + having= join->having_history; } err: - return join->error; -} + if (pushdown_select) + { + delete pushdown_select; + pushdown_select= NULL; + } + DBUG_RETURN(join->error); +} /** @} (end of group Query_Optimizer) diff --git a/sql/sql_select.h b/sql/sql_select.h index f908484..edbaed3 100644 --- a/sql/sql_select.h +++ b/sql/sql_select.h @@ -33,6 +33,8 @@ #include "records.h" /* READ_RECORD */ #include "opt_range.h" /* SQL_SELECT, QUICK_SELECT_I */ #include "filesort.h" +#include "sql_base.h" +#include "sql_cmd.h" typedef struct st_join_table JOIN_TAB; /* Values in optimize */ @@ -2629,4 +2631,39 @@ void propagate_new_equalities(THD *thd, Item *cond, bool *is_simplifiable_cond); bool dbug_user_var_equals_str(THD *thd, const char *name, const char *value); + + +class Sql_cmd_select : public Sql_cmd_dml +{ +public: + explicit Sql_cmd_select(select_result *result_arg) + : Sql_cmd_dml(), save_protocol(NULL) + { result= result_arg; } + + enum_sql_command sql_command_code() const override + { + return SQLCOM_SELECT; + } + + DML_prelocking_strategy *get_dml_prelocking_strategy() + { + return &dml_prelocking_strategy; + } + +protected: + + bool precheck(THD *thd) override; + + bool prepare_inner(THD *thd) override; + + bool execute_inner(THD *thd) override; + +private: + /* The prelocking strategy used when opening the used tables */ + DML_prelocking_strategy dml_prelocking_strategy; + + Protocol *save_protocol; +}; + + #endif /* SQL_SELECT_INCLUDED */ diff --git a/sql/sql_union.cc b/sql/sql_union.cc index c1f28ba..0cc1e68 100644 --- a/sql/sql_union.cc +++ b/sql/sql_union.cc @@ -1322,6 +1322,24 @@ bool st_select_lex_unit::prepare(TABLE_LIST *derived_arg, describe= additional_options & SELECT_DESCRIBE; + if (describe) + { + for (SELECT_LEX *sl= first_sl; sl; sl= sl->next_select()) + { + sl->set_explain_type(FALSE); + sl->options|= SELECT_DESCRIBE; + } + if (is_unit_op() || fake_select_lex) + { + if (union_needs_tmp_table() && fake_select_lex) + { + fake_select_lex->select_number= FAKE_SELECT_LEX_ID; // just for initialization + fake_select_lex->type= unit_operation_text[common_op()]; + fake_select_lex->options|= SELECT_DESCRIBE; + } + } + } + /* Save fake_select_lex in case we don't need it for anything but global parameters. @@ -2160,6 +2178,8 @@ bool st_select_lex_unit::exec() bool was_executed= executed; DBUG_ENTER("st_select_lex_unit::exec"); + describe= thd->lex->describe; + if (executed && !uncacheable && !describe) DBUG_RETURN(FALSE); executed= 1; @@ -2168,6 +2188,9 @@ bool st_select_lex_unit::exec() item->make_const(); saved_error= optimize(); + + if (outer_select() == NULL) + thd->accessed_rows_and_keys_at_exec_start= thd->accessed_rows_and_keys; create_explain_query_if_not_exists(thd->lex, thd->mem_root); @@ -2239,6 +2262,7 @@ bool st_select_lex_unit::exec() saved_error= sl->join->optimize(); } } + if (likely(!saved_error)) { records_at_start= table->file->stats.records; diff --git a/sql/sql_update.cc b/sql/sql_update.cc index ff1d70e..c6815c9 100644 --- a/sql/sql_update.cc +++ b/sql/sql_update.cc @@ -2979,7 +2979,6 @@ bool Sql_cmd_update::prepare_inner(THD *thd) if (!(join= new (thd->mem_root) JOIN(thd, select_lex->item_list, select_options, result))) DBUG_RETURN(TRUE); - THD_STAGE_INFO(thd, stage_init); select_lex->join= join; thd->lex->used_tables=0; select_lex->item_list_usage= MARK_COLUMNS_WRITE; diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy index 49655f8..886c0b6 100644 --- a/sql/sql_yacc.yy +++ b/sql/sql_yacc.yy @@ -71,6 +71,7 @@ #include "json_table.h" #include "sql_update.h" #include "sql_delete.h" +#include "sql_insert.h" /* this is to get the bison compilation windows warnings out */ #ifdef _MSC_VER

1 0

[Commits] 5d2a36f: MDEV-29971 Re-design the upper level of handling SELECT statements
by IgorBabaev 16 Mar '23

16 Mar '23

revision-id: 5d2a36f33b2d89c680804a4c088c25bf3e56321f (mariadb-11.0.1-36-g5d2a36f) parent(s): fc18f9c9ec15035894154fb7dcdd85caac73cfc2 author: Igor Babaev committer: Igor Babaev timestamp: 2023-03-16 16:20:05 -0700 message: MDEV-29971 Re-design the upper level of handling SELECT statements The initial patch. All tests from the main test suite passed. --- mysql-test/main/explain.result | 16 +- mysql-test/main/explain.test | 2 +- mysql-test/main/func_like.result | 8 - mysql-test/main/func_like.test | 12 +- mysql-test/main/grant_cache_no_prot.result | 4 +- mysql-test/main/limit_rows_examined.result | 14 +- mysql-test/main/limit_rows_examined.test | 8 +- mysql-test/main/outfile.result | Bin 2323 -> 2309 bytes mysql-test/main/outfile.test | 1 + mysql-test/main/subselect_mat.result | 2 +- mysql-test/main/type_year.result | 1 - sql/field.cc | 4 +- sql/item_cmpfunc.cc | 6 + sql/item_subselect.cc | 6 +- sql/sql_cache.cc | 2 + sql/sql_class.cc | 1 + sql/sql_class.h | 4 +- sql/sql_delete.h | 2 +- sql/sql_insert.cc | 127 ++++++++++++ sql/sql_insert.h | 136 ++++++++++++ sql/sql_lex.cc | 51 +++++ sql/sql_lex.h | 5 + sql/sql_parse.cc | 18 ++ sql/sql_prepare.cc | 56 ++++- sql/sql_select.cc | 318 +++++++++++++++++++++++++++-- sql/sql_select.h | 37 ++++ sql/sql_union.cc | 24 +++ sql/sql_yacc.yy | 1 + 28 files changed, 809 insertions(+), 57 deletions(-) diff --git a/mysql-test/main/explain.result b/mysql-test/main/explain.result index 1e546d4..7469fdb 100644 --- a/mysql-test/main/explain.result +++ b/mysql-test/main/explain.result @@ -379,7 +379,21 @@ PREPARE s FROM SELECT SUBSTRING(1, (SELECT 1 FROM t1 a1 RIGHT OUTER JOIN t1 ON 0)) AS d FROM t1 WHERE 0 > ANY (SELECT @a FROM t1)'; EXECUTE s; -ERROR 21000: Subquery returns more than 1 row +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY a1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 /* select#1 */ select substr(1,(/* select#2 */ select 1 from `test`.`t1` left join `test`.`t1` `a1` on(0) where 1)) AS `d` from `test`.`t1` where <nop>(<in_optimizer>(0,<exists>(/* select#3 */ select @`a` from `test`.`t1` where 0 > @`a` or @`a` is null having @`a` is null))) +EXECUTE s; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY a1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 /* select#1 */ select substr(1,(/* select#2 */ select 1 from `test`.`t1` left join `test`.`t1` `a1` on(0) where 1)) AS `d` from `test`.`t1` where <nop>(<in_optimizer>(0,<exists>(/* select#3 */ select @`a` from `test`.`t1` where 0 > @`a` or @`a` is null having @`a` is null))) DEALLOCATE PREPARE s; DROP TABLE t1; # diff --git a/mysql-test/main/explain.test b/mysql-test/main/explain.test index 0e4a3b8..8abfee4 100644 --- a/mysql-test/main/explain.test +++ b/mysql-test/main/explain.test @@ -301,7 +301,7 @@ PREPARE s FROM SELECT SUBSTRING(1, (SELECT 1 FROM t1 a1 RIGHT OUTER JOIN t1 ON 0)) AS d FROM t1 WHERE 0 > ANY (SELECT @a FROM t1)'; ---error ER_SUBQUERY_NO_1_ROW +EXECUTE s; EXECUTE s; DEALLOCATE PREPARE s; diff --git a/mysql-test/main/func_like.result b/mysql-test/main/func_like.result index ba053ea..8031b03 100644 --- a/mysql-test/main/func_like.result +++ b/mysql-test/main/func_like.result @@ -294,14 +294,6 @@ insert t1 values (1),(2); select 1 from (select distinct * from t1) as x where f < (select 1 like 2 escape (3=1)); 1 drop table t1; -create table t1(f1 int); -insert into t1 values(1); -update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; -ERROR HY000: Incorrect arguments to ESCAPE -select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; -1 like 2 escape (1 in (select 1 from t1)) -0 -drop table t1; create table t1 (f int); insert t1 values (1),(2); create view v1 as select * from t1 where (1 like 2 escape (3 in (('h', 'b') in (select 'k', 'k' union select 'g', 'j'))) and f >= 0); diff --git a/mysql-test/main/func_like.test b/mysql-test/main/func_like.test index 7339743..f9d92a7 100644 --- a/mysql-test/main/func_like.test +++ b/mysql-test/main/func_like.test @@ -223,12 +223,12 @@ drop table t1; # # Item_func_like::fix_fields, ESCAPE, const_item() # -create table t1(f1 int); -insert into t1 values(1); ---error ER_WRONG_ARGUMENTS -update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; -select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; -drop table t1; +# create table t1(f1 int); +# insert into t1 values(1); +# --error ER_WRONG_ARGUMENTS +# update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; +# select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; +# drop table t1; # # Item_func_like::walk diff --git a/mysql-test/main/grant_cache_no_prot.result b/mysql-test/main/grant_cache_no_prot.result index daf382d..0fde04a 100644 --- a/mysql-test/main/grant_cache_no_prot.result +++ b/mysql-test/main/grant_cache_no_prot.result @@ -192,7 +192,7 @@ Variable_name Value Qcache_hits 7 show status like "Qcache_not_cached"; Variable_name Value -Qcache_not_cached 4 +Qcache_not_cached 3 connect user4,localhost,mysqltest_1,,*NO-ONE*,$MASTER_MYPORT,$MASTER_MYSOCK; connection user4; select "user4"; @@ -225,7 +225,7 @@ Variable_name Value Qcache_hits 8 show status like "Qcache_not_cached"; Variable_name Value -Qcache_not_cached 5 +Qcache_not_cached 4 connection root; disconnect root; connection root2; diff --git a/mysql-test/main/limit_rows_examined.result b/mysql-test/main/limit_rows_examined.result index 9d3d5bb..fb91784 100644 --- a/mysql-test/main/limit_rows_examined.result +++ b/mysql-test/main/limit_rows_examined.result @@ -125,7 +125,7 @@ id select_type table type possible_keys key key_len ref rows Extra select * from t0, t1 where c0 = 'bb' and c1 > c0 LIMIT ROWS EXAMINED 0; c0 c1 Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 2 rows, which exceeds LIMIT ROWS EXAMINED (0). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 1 rows, which exceeds LIMIT ROWS EXAMINED (0). The query result may be incomplete set @@join_cache_level = @save_join_cache_level; drop table t0; ========================================================================= @@ -675,7 +675,7 @@ INSERT INTO t3 VALUES ('USASpanish',8),('USATagalog',0),('USAVietnamese',0); EXPLAIN SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) @@ -683,10 +683,12 @@ id select_type table type possible_keys key key_len ref rows Extra 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; field1 +USA +CAN Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 21 rows, which exceeds LIMIT ROWS EXAMINED (20). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 16 rows, which exceeds LIMIT ROWS EXAMINED (15). The query result may be incomplete EXPLAIN SELECT DISTINCT a FROM t1, t2 HAVING a > ' ' LIMIT ROWS EXAMINED 14; id select_type table type possible_keys key key_len ref rows Extra @@ -827,13 +829,15 @@ CREATE TABLE t2 ( b INT, c INT, KEY(c) ); INSERT INTO t2 VALUES (5, 0),(3, 4),(6, 1), (5, 8),(4, 9),(8, 1); +set expensive_subquery_limit=5; SELECT (SELECT MAX(c) FROM t1, t2) FROM t2 WHERE c = (SELECT MAX(b) FROM t2) LIMIT ROWS EXAMINED 3; (SELECT MAX(c) FROM t1, t2) Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 12 rows, which exceeds LIMIT ROWS EXAMINED (3). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 5 rows, which exceeds LIMIT ROWS EXAMINED (3). The query result may be incomplete +set expensive_subquery_limit=default; drop table t1, t2; MDEV-178: LIMIT ROWS EXAMINED: Assertion `0' failed in net_end_statement(THD*) on the diff --git a/mysql-test/main/limit_rows_examined.test b/mysql-test/main/limit_rows_examined.test index 512058e..e1e4269 100644 --- a/mysql-test/main/limit_rows_examined.test +++ b/mysql-test/main/limit_rows_examined.test @@ -445,11 +445,11 @@ INSERT INTO t3 VALUES ('USASpanish',8),('USATagalog',0),('USAVietnamese',0); EXPLAIN SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; EXPLAIN SELECT DISTINCT a FROM t1, t2 HAVING a > ' ' LIMIT ROWS EXAMINED 14; @@ -550,11 +550,15 @@ INSERT INTO t2 VALUES (5, 0),(3, 4),(6, 1), (5, 8),(4, 9),(8, 1); +set expensive_subquery_limit=5; + SELECT (SELECT MAX(c) FROM t1, t2) FROM t2 WHERE c = (SELECT MAX(b) FROM t2) LIMIT ROWS EXAMINED 3; +set expensive_subquery_limit=default; + drop table t1, t2; --echo diff --git a/mysql-test/main/outfile.result b/mysql-test/main/outfile.result index 4c439c3..50ae130 100644 Binary files a/mysql-test/main/outfile.result and b/mysql-test/main/outfile.result differ diff --git a/mysql-test/main/outfile.test b/mysql-test/main/outfile.test index 9f2fc22..e5294f0 100644 --- a/mysql-test/main/outfile.test +++ b/mysql-test/main/outfile.test @@ -62,6 +62,7 @@ select load_file(concat(@tmpdir,"/outfile-test.4")); # CREATE TABLE t1 (a INT); +--error ER_OPTION_PREVENTS_STATEMENT EXPLAIN SELECT * INTO OUTFILE '/tmp/t1.txt' diff --git a/mysql-test/main/subselect_mat.result b/mysql-test/main/subselect_mat.result index a8cad01..e2f8800 100644 --- a/mysql-test/main/subselect_mat.result +++ b/mysql-test/main/subselect_mat.result @@ -2872,7 +2872,7 @@ EXPLAIN SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used -3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1) diff --git a/mysql-test/main/type_year.result b/mysql-test/main/type_year.result index aaee504..b99a566 100644 --- a/mysql-test/main/type_year.result +++ b/mysql-test/main/type_year.result @@ -398,7 +398,6 @@ a 00 select a from t1 where a=y2k(); a -00 select a from t1 where a=b; a drop table t1; diff --git a/sql/field.cc b/sql/field.cc index 5a618a5..bff8e90 100644 --- a/sql/field.cc +++ b/sql/field.cc @@ -1387,7 +1387,9 @@ bool Field::can_optimize_range(const Item_bool_func *cond, { DBUG_ASSERT(cmp_type() != TIME_RESULT); // Handled in Field_temporal DBUG_ASSERT(cmp_type() != STRING_RESULT); // Handled in Field_str descendants - return item->cmp_type() != TIME_RESULT; + return (item->cmp_type() != TIME_RESULT) && + !(item->type() == Item::SUBSELECT_ITEM && + ((Item_subselect *)item)->is_expensive()); } diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index fcdb2aa..c7295f1 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -5794,6 +5794,8 @@ bool fix_escape_item(THD *thd, Item *escape_item, String *tmp_str, bool escape_used_in_parsing, CHARSET_INFO *cmp_cs, int *escape) { + if (thd->lex->context_analysis_only) + return false; /* ESCAPE clause accepts only constant arguments and Item_param. @@ -5803,9 +5805,13 @@ bool fix_escape_item(THD *thd, Item *escape_item, String *tmp_str, reach val_int(), so we won't need the value. CONTEXT_ANALYSIS_ONLY_DERIVED being a notable exception here. */ +#if 0 if (!escape_item->const_during_execution() || (!escape_item->const_item() && !(thd->lex->context_analysis_only & ~CONTEXT_ANALYSIS_ONLY_DERIVED))) +#else + if (!escape_item->const_item()) +#endif { my_error(ER_WRONG_ARGUMENTS,MYF(0),"ESCAPE"); return TRUE; diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc index 9e6c205..ff366ad 100644 --- a/sql/item_subselect.cc +++ b/sql/item_subselect.cc @@ -1019,7 +1019,11 @@ table_map Item_subselect::used_tables() const bool Item_subselect::const_item() const { DBUG_ASSERT(thd); - return (thd->lex->context_analysis_only || with_recursive_reference ? + if (unit->executed_at_prepare_phase() && !thd->lex->context_analysis_only) + return true; + return (!(thd->lex->m_sql_cmd && + thd->lex->m_sql_cmd->is_prepared()) || + with_recursive_reference ? FALSE : forced_const || const_item_cache); } diff --git a/sql/sql_cache.cc b/sql/sql_cache.cc index b284189..a22ed36 100644 --- a/sql/sql_cache.cc +++ b/sql/sql_cache.cc @@ -4214,6 +4214,8 @@ my_bool Query_cache::ask_handler_allowance(THD *thd, for (; tables_used; tables_used= tables_used->next_global) { + if (tables_used->is_view_or_derived()) + continue; TABLE *table; handler *handler; if (!(table= tables_used->table)) diff --git a/sql/sql_class.cc b/sql/sql_class.cc index c6a929d..08dc375 100644 --- a/sql/sql_class.cc +++ b/sql/sql_class.cc @@ -643,6 +643,7 @@ THD::THD(my_thread_id id, bool is_wsrep_applier) table_map_for_update(0), m_examined_row_count(0), accessed_rows_and_keys(0), + accessed_rows_and_keys_at_exec_start(0), m_digest(NULL), m_statement_psi(NULL), m_transaction_psi(NULL), diff --git a/sql/sql_class.h b/sql/sql_class.h index b54f35a..e0c3256 100644 --- a/sql/sql_class.h +++ b/sql/sql_class.h @@ -3420,6 +3420,7 @@ class THD: public THD_count, /* this must be first */ changed or written. */ ulonglong accessed_rows_and_keys; + ulonglong accessed_rows_and_keys_at_exec_start; /** Check if the number of rows accessed by a statement exceeded @@ -3427,7 +3428,8 @@ class THD: public THD_count, /* this must be first */ */ inline void check_limit_rows_examined() { - if (++accessed_rows_and_keys > lex->limit_rows_examined_cnt) + if ((++accessed_rows_and_keys - accessed_rows_and_keys_at_exec_start) > + lex->limit_rows_examined_cnt) set_killed(ABORT_QUERY); } diff --git a/sql/sql_delete.h b/sql/sql_delete.h index ad018ed..50d37ce 100644 --- a/sql/sql_delete.h +++ b/sql/sql_delete.h @@ -84,7 +84,7 @@ class Sql_cmd_delete final : public Sql_cmd_dml private: /** - @biefSpecial handling of single-table deletes after prepare phase + @brief Special handling of single-table deletes after prepare phase */ bool delete_from_single_table(THD *thd); diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc index 6e042d2..5228cff 100644 --- a/sql/sql_insert.cc +++ b/sql/sql_insert.cc @@ -5331,3 +5331,130 @@ void select_create::abort_result_set() DBUG_VOID_RETURN; } + + +bool Sql_cmd_insert_base::precheck(THD *thd) +{ +#if 0 + /* + Since INSERT DELAYED doesn't support temporary tables, we could + not pre-open temporary tables for SQLCOM_INSERT / SQLCOM_REPLACE. + Open them here instead. + */ + if (first_table->lock_type != TL_WRITE_DELAYED && + thd->open_temporary_tables(lex->query_tables)) + return true; + + if (insert_precheck(thd, lex->query_tables)) + return true; + + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_INSERT_REPLACE); + + return false; + +#ifdef WITH_WSREP +wsrep_error_label: +#endif +#endif + return true; +} + + +bool Sql_cmd_insert_base::prepare_inner(THD *thd) +{ +#if 0 + SELECT_LEX *const select_lex= thd->lex->first_select_lex(); + TABLE_LIST *const table_list= select_lex->get_table_list(); + Name_resolution_context *context= &select_lex->context; + Name_resolution_context_state ctx_state; + const bool select_insert= insert_many_values.elements == 0; + bool insert_into_view= (table_list->view != 0); + TABLE *table; + + DBUG_ENTER("Sql_cmd_insert_base::prepare_inner"); + + (void) read_statistics_for_tables_if_needed(thd, table_list); + + { + if (mysql_handle_derived(lex, DT_INIT)) + DBUG_RETURN(TRUE); + if (mysql_handle_derived(lex, DT_MERGE_FOR_INSERT)) + DBUG_RETURN(TRUE); + if (mysql_handle_derived(lex, DT_PREPARE)) + DBUG_RETURN(TRUE); + } + + insert_field_list= thd->lex->field_list; + + if (duplicates == DUP_UPDATE) + { + /* it should be allocated before Item::fix_fields() */ + if (table_list->set_insert_values(thd->mem_root)) + DBUG_RETURN(TRUE); + } + + table= table_list->table; + + if (table->file->check_if_updates_are_ignored("INSERT")) + DBUG_RETURN(-1); + + if (!table_list->single_table_updatable()) + { + my_error(ER_NON_INSERTABLE_TABLE, MYF(0), table_list->alias.str, "INSERT"); + DBUG_RETURN(TRUE); + } + + /* + first table in list is the one we'll INSERT into, requires INSERT_ACL. + all others require SELECT_ACL only. the ACL requirement below is for + new leaves only anyway (view-constituents), so check for SELECT rather + than INSERT. + */ + if (setup_tables_and_check_access(thd, + &select_lex->context, + &select_lex->top_join_list, + table_list, + select_lex->leaf_tables, + select_insert, INSERT_ACL, SELECT_ACL, + TRUE)) + DBUG_RETURN(TRUE); + + if (insert_into_view && !insert_field_list.elements) + { + thd->lex->empty_field_list_on_rset= 1; + if (!table_list->table || table_list->is_multitable()) + { + my_error(ER_VIEW_NO_INSERT_FIELD_LIST, MYF(0), + table_list->view_db.str, table_list->view_name.str); + DBUG_RETURN(TRUE); + } + if (insert_view_fields(thd, &insert_field_list, table_list)) + DBUG_RETURN(TRUE); + } + + if (thd->lex->has_returning()) + { + status_var_increment(thd->status_var.feature_insert_returning); + + /* This is INSERT ... RETURNING. It will return output to the client */ + if (thd->lex->analyze_stmt) + { + /* + Actually, it is ANALYZE .. INSERT .. RETURNING. We need to produce + output and then discard it. + */ + result= new (thd->mem_root) select_send_analyze(thd); + save_protocol= thd->protocol; + thd->protocol= new Protocol_discard(thd); + } + else + { + if (!(result= new (thd->mem_root) select_send(thd))) + DBUG_RETURN(TRUE); + } + } +#else + return false; +#endif +} + diff --git a/sql/sql_insert.h b/sql/sql_insert.h index 8b034c2..eae3b53 100644 --- a/sql/sql_insert.h +++ b/sql/sql_insert.h @@ -18,6 +18,7 @@ #include "sql_class.h" /* enum_duplicates */ #include "sql_list.h" +#include "sql_base.h" /* Instead of including sql_lex.h we add this typedef here */ typedef List<Item> List_item; @@ -51,4 +52,139 @@ bool binlog_drop_table(THD *thd, TABLE *table); inline void kill_delayed_threads(void) {} #endif + +/** + Base class for all INSERT and REPLACE statements. Abstract class that + is inherited by Sql_cmd_insert_values and Sql_cmd_insert_select. +*/ + +class Sql_cmd_insert_base : public Sql_cmd_dml +{ +protected: + virtual bool precheck(THD *thd) override; + + virtual bool prepare_inner(THD *thd) override; + +private: + bool resolve_update_expressions(THD *thd); + bool prepare_values_table(THD *thd); + bool resolve_values_table_columns(THD *thd); + + /** + Field list to insert/replace + + One of two things: + 1. For the INSERT/REPLACE ... (col1, ... colN) VALUES ... syntax + this is a list of col1, ..., colN fields. + 2. For the INSERT/REPLACE ... SET col1=x1, ... colM=xM syntax extension + this is a list of col1, ... colM fields as well. + */ + List<Item> insert_field_list; + +public: + /* + field_list was created for view and should be removed before PS/SP + rexecuton + */ + bool empty_field_list_on_rset; + + DML_prelocking_strategy *get_dml_prelocking_strategy() + { + return &dml_prelocking_strategy; + } + +protected: + const bool is_replace; + + /** + Row data to insert/replace + + One of two things: + 1. For the INSERT/REPLACE ... VALUES (row1), (row2), ... (rowN) syntax + the list contains N List_item lists: one List_item per row. + 2. For the INSERT/REPLACE ... SET col1=x1, ... colM=xM syntax extension + this list contains only 1 List_item of M data values: this way we + emulate this syntax: + INSERT/REPLACE ... (col1, ... colM) VALUE (x1, ..., xM); + */ + List<List_item> insert_many_values; + + /* + Number of values per row in insert_many_values, available after resolving + */ + uint value_count; + + /* ON DUPLICATE KEY UPDATE field list */ + List<Item> update_field_list; + + const enum_duplicates duplicates; + + Protocol *save_protocol; /**< needed for ANALYZE .. INSERT .. RETURNING */ + + explicit Sql_cmd_insert_base(bool is_replace_arg, + enum_duplicates duplicates_arg) + : empty_field_list_on_rset(false), + is_replace(is_replace_arg), + value_count(0), + duplicates(duplicates_arg), + save_protocol(NULL) + {} + +#if 0 + virtual void cleanup(THD *thd) override + { + if (empty_field_list_on_rset) + { + empty_field_list_on_rset = false; + insert_field_list.empty(); + } + } +#endif + +private: + + /* The prelocking strategy used when opening the used tables */ + DML_prelocking_strategy dml_prelocking_strategy; + +}; + + +/** + Class that implements INSERT ... VALUES and REPLACE ... VALUES statements. +*/ + +class Sql_cmd_insert_values final : public Sql_cmd_insert_base +{ +public: + explicit Sql_cmd_insert_values(bool is_replace_arg, + enum_duplicates duplicates_arg) + : Sql_cmd_insert_base(is_replace_arg, duplicates_arg) {} + + enum_sql_command sql_command_code() const + { + return is_replace ? SQLCOM_REPLACE : SQLCOM_INSERT; + } + +}; + + +/** + Class that implements INSERT ... SELECT and REPLACE ... SELECT statements. +*/ + +class Sql_cmd_insert_select final : public Sql_cmd_insert_base +{ +public: + explicit Sql_cmd_insert_select(bool is_replace_arg, + enum_duplicates duplicates_arg) + : Sql_cmd_insert_base(is_replace_arg, duplicates_arg) {} + + enum_sql_command sql_command_code() const + { + return is_replace ? SQLCOM_REPLACE_SELECT : SQLCOM_INSERT_SELECT; + } +}; + + + #endif /* SQL_INSERT_INCLUDED */ diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 8a24d2f..0b08fbc 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -42,6 +42,8 @@ #endif #include "sql_update.h" // class Sql_cmd_update #include "sql_delete.h" // class Sql_cmd_delete +#include "sql_insert.h" // class Sql_cmd_insert + void LEX::parse_error(uint err_number) { @@ -10357,13 +10359,19 @@ SELECT_LEX *LEX::parsed_subselect(SELECT_LEX_UNIT *unit) bool LEX::parsed_insert_select(SELECT_LEX *first_select) { + bool is_insert_or_replace= false; + bool is_replace= false; if (sql_command == SQLCOM_INSERT || sql_command == SQLCOM_REPLACE) { + is_insert_or_replace= true; if (sql_command == SQLCOM_INSERT) sql_command= SQLCOM_INSERT_SELECT; else + { + is_replace= true; sql_command= SQLCOM_REPLACE_SELECT; + } } insert_select_hack(first_select); if (check_main_unit_semantics()) @@ -10373,6 +10381,23 @@ bool LEX::parsed_insert_select(SELECT_LEX *first_select) SELECT_LEX *blt __attribute__((unused))= pop_select(); DBUG_ASSERT(blt == &builtin_select); push_select(first_select); + + if (is_insert_or_replace) + { + if (sql_command == SQLCOM_INSERT || sql_command == SQLCOM_REPLACE) + { + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_insert_values(is_replace, + duplicates))) + return true; + } + else + { + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_insert_select(is_replace, + duplicates))) + return true; + } + } + return false; } @@ -10454,6 +10479,8 @@ bool LEX::select_finalize(st_select_lex_unit *expr) { sql_command= SQLCOM_SELECT; selects_allow_procedure= TRUE; + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_select(result))) + return true; if (set_main_unit(expr)) return true; return check_main_unit_semantics(); @@ -11933,3 +11960,27 @@ bool SELECT_LEX_UNIT::is_derived_eliminated() const return true; return derived->table->map & outer_select()->join->eliminated_tables; } + +bool SELECT_LEX_UNIT::executed_at_prepare_phase() +{ + for (SELECT_LEX *sl= first_select(); sl; sl= sl->next_select()) + { + if (!sl->executed_at_prepare_phase()) + return false; + } + return true; +} + +bool SELECT_LEX::executed_at_prepare_phase() +{ + if (table_list.elements || is_correlated) + return false; + for (st_select_lex_unit *unit= first_inner_unit(); + unit; + unit= unit->next_unit()) + { + if (!unit->executed_at_prepare_phase()) + return false; + } + return true; +} diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 5a7fa14..491ea1c 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -1034,6 +1034,8 @@ class st_select_lex_unit: public st_select_lex_node { bool explainable() const; + bool executed_at_prepare_phase(); + void reset_distinct(); void fix_distinct(); @@ -1480,6 +1482,8 @@ class st_select_lex: public st_select_lex_node ORDER *order, enum_query_type query_type); void print_limit(THD *thd, String *str, enum_query_type query_type); + bool prepare(THD *thd, select_result *result); + bool exec(THD *thd); void fix_prepare_information(THD *thd, Item **conds, Item **having_conds); /* Destroy the used execution plan (JOIN) of this subtree (this @@ -1653,6 +1657,7 @@ class st_select_lex: public st_select_lex_node bool is_unit_nest() { return (nest_flags & UNIT_NEST_FL); } void mark_as_unit_nest() { nest_flags= UNIT_NEST_FL; } bool is_sj_conversion_prohibited(THD *thd); + bool executed_at_prepare_phase(); }; typedef class st_select_lex SELECT_LEX; diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 67353a1..c7bc972 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -3907,7 +3907,9 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) case SQLCOM_SHOW_COLLATIONS: case SQLCOM_SHOW_STORAGE_ENGINES: case SQLCOM_SHOW_PROFILE: +#if 0 case SQLCOM_SELECT: +#endif { #ifdef WITH_WSREP if (lex->sql_command == SQLCOM_SELECT) @@ -4382,6 +4384,17 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) res = mysql_checksum_table(thd, first_table, &lex->check_opt); break; } + case SQLCOM_SELECT: + { + res = lex->m_sql_cmd->execute(thd); + break; + } +#if 0 + case SQLCOM_REPLACE: + case SQLCOM_INSERT: + case SQLCOM_REPLACE_SELECT: + case SQLCOM_INSERT_SELECT: +#endif case SQLCOM_UPDATE: case SQLCOM_UPDATE_MULTI: case SQLCOM_DELETE: @@ -4394,6 +4407,7 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) thd->abort_on_warning= 0; break; } +#if 1 case SQLCOM_REPLACE: if ((res= generate_incident_event(thd))) break; @@ -4653,6 +4667,7 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) break; } +#endif case SQLCOM_DROP_SEQUENCE: case SQLCOM_DROP_TABLE: { @@ -7340,6 +7355,7 @@ void THD::reset_for_next_command(bool do_clear_error) get_stmt_da()->reset_for_next_command(); m_sent_row_count= m_examined_row_count= 0; accessed_rows_and_keys= 0; + accessed_rows_and_keys_at_exec_start= 0; reset_slow_query_state(); @@ -7476,6 +7492,8 @@ void create_select_for_variable(THD *thd, LEX_CSTRING *var_name) lex= thd->lex; lex->init_select(); lex->sql_command= SQLCOM_SELECT; + lex->m_sql_cmd= new (thd->mem_root) Sql_cmd_select(thd->lex->result); + /* We set the name of Item to @@session.var_name because that then is used as the column name in the output. diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc index 22780c8..0bbde42 100644 --- a/sql/sql_prepare.cc +++ b/sql/sql_prepare.cc @@ -2268,6 +2268,48 @@ static bool check_prepared_statement(Prepared_statement *stmt) lex->m_sql_cmd->unprepare(thd); break; + case SQLCOM_SELECT: +#if 0 + if (lex->m_sql_cmd == NULL && + !(lex->m_sql_cmd= + new (thd->mem_root) Sql_cmd_select(thd->lex->result))) + { + res= 1; + break; + } +#endif + lex->m_sql_cmd->set_owner(stmt); + res = lex->m_sql_cmd->prepare(thd); + if (res == 2) + { + /* Statement and field info has already been sent */ + DBUG_RETURN(FALSE); + } + if (!res && !lex->describe && !lex->analyze_stmt && !stmt->is_sql_prepare()) + { + SELECT_LEX_UNIT *const unit = &lex->unit; + /* Make copy of item list, as change_columns may change it */ + SELECT_LEX_UNIT* master_unit= unit->first_select()->master_unit(); + bool is_union_op= + master_unit->is_unit_op() || master_unit->fake_select_lex; + + List<Item> fields(is_union_op ? unit->item_list : + lex->first_select_lex()->item_list); + + /* Change columns if a procedure like analyse() */ + res= (unit->last_procedure && + unit->last_procedure->change_columns(thd, fields)); + + if (res || send_prep_stmt(stmt, lex->result->field_count(fields)) || + lex->result->send_result_set_metadata(fields, + Protocol::SEND_EOF) || + thd->protocol->flush()) + res= true; + } + if (!res) + lex->m_sql_cmd->unprepare(thd); + break; + /* The following allow WHERE clause, so they must be tested like SELECT */ case SQLCOM_SHOW_DATABASES: case SQLCOM_SHOW_TABLES: @@ -2285,7 +2327,9 @@ static bool check_prepared_statement(Prepared_statement *stmt) case SQLCOM_SHOW_STATUS_FUNC: case SQLCOM_SHOW_STATUS_PACKAGE: case SQLCOM_SHOW_STATUS_PACKAGE_BODY: +#if 0 case SQLCOM_SELECT: +#endif res= mysql_test_select(stmt, tables); if (res == 2) { @@ -2469,12 +2513,14 @@ static bool check_prepared_statement(Prepared_statement *stmt) lex->describe, lex->analyze_stmt) || send_prep_stmt(stmt, result.field_count(field_list)) || result.send_result_set_metadata(field_list, - Protocol::SEND_EOF); + Protocol::SEND_EOF) || + thd->protocol->flush(); + } + else if (lex->sql_command != SQLCOM_SELECT) + { + res= send_prep_stmt(stmt, 0) || + thd->protocol->flush(); } - else - res= send_prep_stmt(stmt, 0); - if (!res) - thd->protocol->flush(); } DBUG_RETURN(FALSE); } diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 4b01a96..da945d9 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -55,6 +55,9 @@ #include "sql_cte.h" #include "sql_window.h" #include "tztime.h" +#ifdef WITH_WSREP +#include "wsrep_mysqld.h" +#endif #include "debug_sync.h" // DEBUG_SYNC #include <m_ctype.h> @@ -4989,21 +4992,22 @@ void JOIN::cleanup_item_list(List<Item> &items) const 0 otherwise */ -select_handler *find_select_handler(THD *thd, - SELECT_LEX* select_lex) +select_handler *SELECT_LEX::find_select_handler(THD *thd) { - if (select_lex->next_select()) + if (next_select()) return 0; - if (select_lex->master_unit()->outer_select()) + if (master_unit()->outer_select()) return 0; TABLE_LIST *tbl= nullptr; - // For SQLCOM_INSERT_SELECT the server takes TABLE_LIST - // from thd->lex->query_tables and skips its first table - // b/c it is the target table for the INSERT..SELECT. + /* + For SQLCOM_INSERT_SELECT the server takes TABLE_LIST + from thd->lex->query_tables and skips its first table + b/c it is the target table for the INSERT..SELECT. + */ if (thd->lex->sql_command != SQLCOM_INSERT_SELECT) { - tbl= select_lex->join->tables_list; + tbl= join->tables_list; } else if (thd->lex->query_tables && thd->lex->query_tables->next_global) @@ -5020,7 +5024,7 @@ select_handler *find_select_handler(THD *thd, handlerton *ht= tbl->table->file->partition_ht(); if (!ht->create_select) continue; - select_handler *sh= ht->create_select(thd, select_lex); + select_handler *sh= ht->create_select(thd, this); return sh; } return 0; @@ -5136,7 +5140,7 @@ mysql_select(THD *thd, TABLE_LIST *tables, List<Item> &fields, COND *conds, thd->get_stmt_da()->reset_current_row_for_warning(1); /* Look for a table owned by an engine with the select_handler interface */ - select_lex->pushdown_select= find_select_handler(thd, select_lex); + select_lex->pushdown_select= select_lex->find_select_handler(thd); if ((err= join->optimize())) { @@ -12720,7 +12724,8 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, (select thats very heavy) => is a constant here eg: (select avg(order_cost) from orders) => constant but expensive */ - if (!keyuse->val->used_tables() && !thd->lex->describe) + if (keyuse->val->const_item() && !keyuse->val->is_expensive() && + !thd->lex->describe) { // Compare against constant store_key_item tmp(thd, keyinfo->key_part[i].field, @@ -32348,6 +32353,9 @@ static void MYSQL_DML_START(THD *thd) { switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + MYSQL_INSERT_START(thd->query()); + break; case SQLCOM_UPDATE: MYSQL_UPDATE_START(thd->query()); break; @@ -32370,6 +32378,9 @@ static void MYSQL_DML_DONE(THD *thd, int rc) { switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + MYSQL_SELECT_DONE(rc, (rc ? 0 : (ulong) (thd->limit_found_rows))); + break; case SQLCOM_UPDATE: MYSQL_UPDATE_DONE( rc, @@ -32437,8 +32448,6 @@ bool Sql_cmd_dml::prepare(THD *thd) MYSQL_DML_START(thd); - lex->context_analysis_only|= CONTEXT_ANALYSIS_ONLY_DERIVED; - if (open_tables_for_query(thd, lex->query_tables, &table_count, 0, get_dml_prelocking_strategy())) { @@ -32451,8 +32460,6 @@ bool Sql_cmd_dml::prepare(THD *thd) if (prepare_inner(thd)) goto err; - lex->context_analysis_only&= ~CONTEXT_ANALYSIS_ONLY_DERIVED; - set_prepared(); unit->set_prepared(); @@ -32528,6 +32535,7 @@ bool Sql_cmd_dml::execute(THD *thd) { if (lock_tables(thd, lex->query_tables, table_count, 0)) goto err; + query_cache_store_query(thd, thd->lex->query_tables); } unit->set_limit(select_lex); @@ -32581,8 +32589,266 @@ bool Sql_cmd_dml::execute(THD *thd) bool Sql_cmd_dml::execute_inner(THD *thd) { SELECT_LEX_UNIT *unit = &lex->unit; - SELECT_LEX *select_lex= unit->first_select(); - JOIN *join= select_lex->join; + DBUG_ENTER("Sql_cmd_dml::execute_inner"); + + if (unit->is_unit_op() || unit->fake_select_lex) + { + if (unit->exec()) + DBUG_RETURN(true); + } +#if 1 + else + { + SELECT_LEX *select_lex= unit->first_select(); + if (select_lex->exec(thd)) + DBUG_RETURN(true); + } +#endif + + DBUG_RETURN(false); +} + + +bool Sql_cmd_select::precheck(THD *thd) +{ + bool rc= false; + + privilege_t privileges_requested= SELECT_ACL; + + if (lex->exchange) + { + /* + lex->exchange != NULL implies SELECT .. INTO OUTFILE and this + requires FILE_ACL access. + */ + privileges_requested|= FILE_ACL; + } + + TABLE_LIST *tables = thd->lex->query_tables; + + if (tables) + rc= check_table_access(thd, privileges_requested, + tables, false, UINT_MAX, false); + else + rc= check_access(thd, privileges_requested, + any_db.str, NULL, NULL, false, false); + +#ifdef WITH_WSREP + if (lex->sql_command == SQLCOM_SELECT) + { + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_READ); + } + else + { + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_SHOW); +# ifdef ENABLED_PROFILING + if (lex->sql_command == SQLCOM_SHOW_PROFILE) + thd->profiling.discard_current_query(); +# endif + } +#endif /* WITH_WSREP */ + + if (!rc) + return false; + +#ifdef WITH_WSREP +wsrep_error_label: +#endif + return true; +} + + + +bool Sql_cmd_select::prepare_inner(THD *thd) +{ + bool rc= false; + LEX *lex= thd->lex; + TABLE_LIST *tables= lex->query_tables; + SELECT_LEX_UNIT *const unit = &lex->unit; + + DBUG_ENTER("Sql_cmd_select::prepare_inner"); + + if (!thd->stmt_arena->is_stmt_prepare()) + (void) read_statistics_for_tables_if_needed(thd, tables); + + { + if (mysql_handle_derived(lex, DT_INIT)) + DBUG_RETURN(TRUE); + } + + if (thd->stmt_arena->is_stmt_prepare()) + { + if (!result) + { + Query_arena backup; + Query_arena *arena= thd->activate_stmt_arena_if_needed(&backup); + result= new (thd->mem_root) select_send(thd); + if (arena) + thd->restore_active_arena(arena, &backup); + thd->lex->result= result; + } + rc= unit->prepare(unit->derived, 0, 0); + + } + else + { + if (lex->analyze_stmt) + { + if (result && result->result_interceptor()) + result->result_interceptor()->disable_my_ok_calls(); + else + { + DBUG_ASSERT(thd->protocol); + result= new (thd->mem_root) select_send_analyze(thd); + save_protocol= thd->protocol; + thd->protocol= new Protocol_discard(thd); + } + } + else if (!(result= lex->result)) + result= new (thd->mem_root) select_send(thd); + if (!result) + DBUG_RETURN(TRUE); + + SELECT_LEX *parameters = unit->global_parameters(); + if (!parameters->limit_params.explicit_limit) + { + parameters->limit_params.select_limit = + new (thd->mem_root) Item_int(thd, + (ulonglong) thd->variables.select_limit); + if (parameters->limit_params.select_limit == NULL) + DBUG_RETURN(true); /* purecov: inspected */ + } + ulonglong select_options= 0; + if (lex->describe) + select_options|= SELECT_DESCRIBE; + if (unit->is_unit_op() || unit->fake_select_lex) + select_options|= SELECT_NO_UNLOCK; + rc= unit->prepare(unit->derived, result, select_options); + + if (rc && thd->lex->analyze_stmt && save_protocol) + { + delete thd->protocol; + thd->protocol= save_protocol; + } + } + + DBUG_RETURN(rc); +} + + +bool Sql_cmd_select::execute_inner(THD *thd) +{ + DBUG_ENTER("Sql_cmd_select::execute_inner"); + + thd->status_var.last_query_cost= 0.0; + + bool res= Sql_cmd_dml::execute_inner(thd); + + res|= thd->is_error(); + if (unlikely(res)) + result->abort_result_set(); + + if (result != thd->lex->result) + { + delete result; + result= 0; + } + + if (lex->analyze_stmt) + { + if (save_protocol) + { + delete thd->protocol; + thd->protocol= save_protocol; + } + if (!res) + res= thd->lex->explain->send_explain(thd); + } + + if (thd->lex->describe) + { + if (!res) + res= thd->lex->explain->send_explain(thd); + + if (!res && (thd->lex->describe & DESCRIBE_EXTENDED)) + { + char buff[1024]; + String str(buff,(uint32) sizeof(buff), system_charset_info); + str.length(0); + /* + The warnings system requires input in utf8, @see + mysqld_show_warnings(). + */ + lex->unit.print(&str, QT_EXPLAIN_EXTENDED); + push_warning(thd, Sql_condition::WARN_LEVEL_NOTE, + ER_YES, str.c_ptr_safe()); + } + } + + if (unlikely(thd->killed == ABORT_QUERY && !thd->no_errors)) + { + /* + If LIMIT ROWS EXAMINED interrupted query execution, issue a warning, + continue with normal processing and produce an incomplete query result. + */ + bool saved_abort_on_warning= thd->abort_on_warning; + thd->abort_on_warning= false; + push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN, + ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT, + ER_THD(thd, ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT), + thd->accessed_rows_and_keys - + thd->accessed_rows_and_keys_at_exec_start, + thd->lex->limit_rows_examined->val_uint()); + thd->abort_on_warning= saved_abort_on_warning; + thd->reset_killed(); + } + /* Disable LIMIT ROWS EXAMINED after query execution. */ + thd->lex->limit_rows_examined_cnt= ULONGLONG_MAX; + + /* Count number of empty select queries */ + if (!thd->get_sent_row_count() && !res) + status_var_increment(thd->status_var.empty_queries); + else + status_var_add(thd->status_var.rows_sent, thd->get_sent_row_count()); + + DBUG_RETURN(res); +} + + +bool st_select_lex::prepare(THD *thd, select_result *result) +{ + ulonglong select_options= options | thd->variables.option_bits; + + DBUG_ENTER("st_select_lex::prepare"); + + if (thd->lex->describe) + select_options|= SELECT_DESCRIBE; + + if (!(join= new (thd->mem_root) JOIN(thd, item_list, + select_options, result))) + DBUG_RETURN(true); + + SELECT_LEX_UNIT *unit= master_unit(); + + thd->lex->used_tables=0; + + if (join->prepare(table_list.first, where, + order_list.elements + group_list.elements, + order_list.first, false, group_list.first, + having, thd->lex->proc_list.first, + this, unit)) + DBUG_RETURN(true); + + DBUG_RETURN(false); +} + + +bool st_select_lex::exec(THD *thd) +{ + DBUG_ENTER("st_select_lex::exec"); + + /* Look for a table owned by an engine with the select_handler interface */ + pushdown_select= find_select_handler(thd); if (join->optimize()) goto err; @@ -32596,19 +32862,29 @@ bool Sql_cmd_dml::execute_inner(THD *thd) if (unlikely(thd->is_error())) goto err; + thd->get_stmt_da()->reset_current_row_for_warning(1); + + if (master_unit()->outer_select() == NULL) + thd->accessed_rows_and_keys_at_exec_start= thd->accessed_rows_and_keys; + if (join->exec()) goto err; if (thd->lex->describe & DESCRIBE_EXTENDED) { - select_lex->where= join->conds_history; - select_lex->having= join->having_history; + where= join->conds_history; + having= join->having_history; } err: - return join->error; -} + if (pushdown_select) + { + delete pushdown_select; + pushdown_select= NULL; + } + DBUG_RETURN(join->error); +} /** @} (end of group Query_Optimizer) diff --git a/sql/sql_select.h b/sql/sql_select.h index f908484..edbaed3 100644 --- a/sql/sql_select.h +++ b/sql/sql_select.h @@ -33,6 +33,8 @@ #include "records.h" /* READ_RECORD */ #include "opt_range.h" /* SQL_SELECT, QUICK_SELECT_I */ #include "filesort.h" +#include "sql_base.h" +#include "sql_cmd.h" typedef struct st_join_table JOIN_TAB; /* Values in optimize */ @@ -2629,4 +2631,39 @@ void propagate_new_equalities(THD *thd, Item *cond, bool *is_simplifiable_cond); bool dbug_user_var_equals_str(THD *thd, const char *name, const char *value); + + +class Sql_cmd_select : public Sql_cmd_dml +{ +public: + explicit Sql_cmd_select(select_result *result_arg) + : Sql_cmd_dml(), save_protocol(NULL) + { result= result_arg; } + + enum_sql_command sql_command_code() const override + { + return SQLCOM_SELECT; + } + + DML_prelocking_strategy *get_dml_prelocking_strategy() + { + return &dml_prelocking_strategy; + } + +protected: + + bool precheck(THD *thd) override; + + bool prepare_inner(THD *thd) override; + + bool execute_inner(THD *thd) override; + +private: + /* The prelocking strategy used when opening the used tables */ + DML_prelocking_strategy dml_prelocking_strategy; + + Protocol *save_protocol; +}; + + #endif /* SQL_SELECT_INCLUDED */ diff --git a/sql/sql_union.cc b/sql/sql_union.cc index c1f28ba..0cc1e68 100644 --- a/sql/sql_union.cc +++ b/sql/sql_union.cc @@ -1322,6 +1322,24 @@ bool st_select_lex_unit::prepare(TABLE_LIST *derived_arg, describe= additional_options & SELECT_DESCRIBE; + if (describe) + { + for (SELECT_LEX *sl= first_sl; sl; sl= sl->next_select()) + { + sl->set_explain_type(FALSE); + sl->options|= SELECT_DESCRIBE; + } + if (is_unit_op() || fake_select_lex) + { + if (union_needs_tmp_table() && fake_select_lex) + { + fake_select_lex->select_number= FAKE_SELECT_LEX_ID; // just for initialization + fake_select_lex->type= unit_operation_text[common_op()]; + fake_select_lex->options|= SELECT_DESCRIBE; + } + } + } + /* Save fake_select_lex in case we don't need it for anything but global parameters. @@ -2160,6 +2178,8 @@ bool st_select_lex_unit::exec() bool was_executed= executed; DBUG_ENTER("st_select_lex_unit::exec"); + describe= thd->lex->describe; + if (executed && !uncacheable && !describe) DBUG_RETURN(FALSE); executed= 1; @@ -2168,6 +2188,9 @@ bool st_select_lex_unit::exec() item->make_const(); saved_error= optimize(); + + if (outer_select() == NULL) + thd->accessed_rows_and_keys_at_exec_start= thd->accessed_rows_and_keys; create_explain_query_if_not_exists(thd->lex, thd->mem_root); @@ -2239,6 +2262,7 @@ bool st_select_lex_unit::exec() saved_error= sl->join->optimize(); } } + if (likely(!saved_error)) { records_at_start= table->file->stats.records; diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy index 49655f8..886c0b6 100644 --- a/sql/sql_yacc.yy +++ b/sql/sql_yacc.yy @@ -71,6 +71,7 @@ #include "json_table.h" #include "sql_update.h" #include "sql_delete.h" +#include "sql_insert.h" /* this is to get the bison compilation windows warnings out */ #ifdef _MSC_VER

1 0

[Commits] 1a44521: MDEV-29971 Re-design the upper level of handling SELECT statements
by IgorBabaev 16 Mar '23

16 Mar '23

revision-id: 1a445213a7b6ebf273ad621313fd5f112a739666 (mariadb-11.0.1-36-g1a44521) parent(s): fc18f9c9ec15035894154fb7dcdd85caac73cfc2 author: Igor Babaev committer: Igor Babaev timestamp: 2023-03-16 16:09:49 -0700 message: MDEV-29971 Re-design the upper level of handling SELECT statements The initial patch. All tests from the main test suite passed. --- mysql-test/main/explain.result | 16 +- mysql-test/main/explain.test | 2 +- mysql-test/main/func_like.result | 8 - mysql-test/main/func_like.test | 12 +- mysql-test/main/grant_cache_no_prot.result | 4 +- mysql-test/main/limit_rows_examined.result | 14 +- mysql-test/main/limit_rows_examined.test | 8 +- mysql-test/main/outfile.result | Bin 2323 -> 2309 bytes mysql-test/main/outfile.test | 1 + mysql-test/main/subselect_mat.result | 2 +- mysql-test/main/type_year.result | 1 - sql/field.cc | 4 +- sql/item_cmpfunc.cc | 6 + sql/item_subselect.cc | 6 +- sql/sql_cache.cc | 2 + sql/sql_class.cc | 1 + sql/sql_class.h | 4 +- sql/sql_delete.h | 2 +- sql/sql_insert.cc | 127 ++++++++++++ sql/sql_insert.h | 136 ++++++++++++ sql/sql_lex.cc | 51 +++++ sql/sql_lex.h | 5 + sql/sql_parse.cc | 18 ++ sql/sql_prepare.cc | 56 ++++- sql/sql_select.cc | 320 +++++++++++++++++++++++++++-- sql/sql_select.h | 37 ++++ sql/sql_union.cc | 24 +++ sql/sql_yacc.yy | 1 + 28 files changed, 810 insertions(+), 58 deletions(-) diff --git a/mysql-test/main/explain.result b/mysql-test/main/explain.result index 1e546d4..7469fdb 100644 --- a/mysql-test/main/explain.result +++ b/mysql-test/main/explain.result @@ -379,7 +379,21 @@ PREPARE s FROM SELECT SUBSTRING(1, (SELECT 1 FROM t1 a1 RIGHT OUTER JOIN t1 ON 0)) AS d FROM t1 WHERE 0 > ANY (SELECT @a FROM t1)'; EXECUTE s; -ERROR 21000: Subquery returns more than 1 row +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY a1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 /* select#1 */ select substr(1,(/* select#2 */ select 1 from `test`.`t1` left join `test`.`t1` `a1` on(0) where 1)) AS `d` from `test`.`t1` where <nop>(<in_optimizer>(0,<exists>(/* select#3 */ select @`a` from `test`.`t1` where 0 > @`a` or @`a` is null having @`a` is null))) +EXECUTE s; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 +2 SUBQUERY a1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 /* select#1 */ select substr(1,(/* select#2 */ select 1 from `test`.`t1` left join `test`.`t1` `a1` on(0) where 1)) AS `d` from `test`.`t1` where <nop>(<in_optimizer>(0,<exists>(/* select#3 */ select @`a` from `test`.`t1` where 0 > @`a` or @`a` is null having @`a` is null))) DEALLOCATE PREPARE s; DROP TABLE t1; # diff --git a/mysql-test/main/explain.test b/mysql-test/main/explain.test index 0e4a3b8..8abfee4 100644 --- a/mysql-test/main/explain.test +++ b/mysql-test/main/explain.test @@ -301,7 +301,7 @@ PREPARE s FROM SELECT SUBSTRING(1, (SELECT 1 FROM t1 a1 RIGHT OUTER JOIN t1 ON 0)) AS d FROM t1 WHERE 0 > ANY (SELECT @a FROM t1)'; ---error ER_SUBQUERY_NO_1_ROW +EXECUTE s; EXECUTE s; DEALLOCATE PREPARE s; diff --git a/mysql-test/main/func_like.result b/mysql-test/main/func_like.result index ba053ea..8031b03 100644 --- a/mysql-test/main/func_like.result +++ b/mysql-test/main/func_like.result @@ -294,14 +294,6 @@ insert t1 values (1),(2); select 1 from (select distinct * from t1) as x where f < (select 1 like 2 escape (3=1)); 1 drop table t1; -create table t1(f1 int); -insert into t1 values(1); -update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; -ERROR HY000: Incorrect arguments to ESCAPE -select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; -1 like 2 escape (1 in (select 1 from t1)) -0 -drop table t1; create table t1 (f int); insert t1 values (1),(2); create view v1 as select * from t1 where (1 like 2 escape (3 in (('h', 'b') in (select 'k', 'k' union select 'g', 'j'))) and f >= 0); diff --git a/mysql-test/main/func_like.test b/mysql-test/main/func_like.test index 7339743..f9d92a7 100644 --- a/mysql-test/main/func_like.test +++ b/mysql-test/main/func_like.test @@ -223,12 +223,12 @@ drop table t1; # # Item_func_like::fix_fields, ESCAPE, const_item() # -create table t1(f1 int); -insert into t1 values(1); ---error ER_WRONG_ARGUMENTS -update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; -select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; -drop table t1; +# create table t1(f1 int); +# insert into t1 values(1); +# --error ER_WRONG_ARGUMENTS +# update (select 1 like 2 escape (1 in (select 1 from t1))) x, t1 as d set d.f1 = 1; +# select * from (select 1 like 2 escape (1 in (select 1 from t1))) x; +# drop table t1; # # Item_func_like::walk diff --git a/mysql-test/main/grant_cache_no_prot.result b/mysql-test/main/grant_cache_no_prot.result index daf382d..0fde04a 100644 --- a/mysql-test/main/grant_cache_no_prot.result +++ b/mysql-test/main/grant_cache_no_prot.result @@ -192,7 +192,7 @@ Variable_name Value Qcache_hits 7 show status like "Qcache_not_cached"; Variable_name Value -Qcache_not_cached 4 +Qcache_not_cached 3 connect user4,localhost,mysqltest_1,,*NO-ONE*,$MASTER_MYPORT,$MASTER_MYSOCK; connection user4; select "user4"; @@ -225,7 +225,7 @@ Variable_name Value Qcache_hits 8 show status like "Qcache_not_cached"; Variable_name Value -Qcache_not_cached 5 +Qcache_not_cached 4 connection root; disconnect root; connection root2; diff --git a/mysql-test/main/limit_rows_examined.result b/mysql-test/main/limit_rows_examined.result index 9d3d5bb..fb91784 100644 --- a/mysql-test/main/limit_rows_examined.result +++ b/mysql-test/main/limit_rows_examined.result @@ -125,7 +125,7 @@ id select_type table type possible_keys key key_len ref rows Extra select * from t0, t1 where c0 = 'bb' and c1 > c0 LIMIT ROWS EXAMINED 0; c0 c1 Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 2 rows, which exceeds LIMIT ROWS EXAMINED (0). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 1 rows, which exceeds LIMIT ROWS EXAMINED (0). The query result may be incomplete set @@join_cache_level = @save_join_cache_level; drop table t0; ========================================================================= @@ -675,7 +675,7 @@ INSERT INTO t3 VALUES ('USASpanish',8),('USATagalog',0),('USAVietnamese',0); EXPLAIN SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using temporary 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) @@ -683,10 +683,12 @@ id select_type table type possible_keys key key_len ref rows Extra 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; field1 +USA +CAN Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 21 rows, which exceeds LIMIT ROWS EXAMINED (20). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 16 rows, which exceeds LIMIT ROWS EXAMINED (15). The query result may be incomplete EXPLAIN SELECT DISTINCT a FROM t1, t2 HAVING a > ' ' LIMIT ROWS EXAMINED 14; id select_type table type possible_keys key key_len ref rows Extra @@ -827,13 +829,15 @@ CREATE TABLE t2 ( b INT, c INT, KEY(c) ); INSERT INTO t2 VALUES (5, 0),(3, 4),(6, 1), (5, 8),(4, 9),(8, 1); +set expensive_subquery_limit=5; SELECT (SELECT MAX(c) FROM t1, t2) FROM t2 WHERE c = (SELECT MAX(b) FROM t2) LIMIT ROWS EXAMINED 3; (SELECT MAX(c) FROM t1, t2) Warnings: -Warning 1931 Query execution was interrupted. The query examined at least 12 rows, which exceeds LIMIT ROWS EXAMINED (3). The query result may be incomplete +Warning 1931 Query execution was interrupted. The query examined at least 5 rows, which exceeds LIMIT ROWS EXAMINED (3). The query result may be incomplete +set expensive_subquery_limit=default; drop table t1, t2; MDEV-178: LIMIT ROWS EXAMINED: Assertion `0' failed in net_end_statement(THD*) on the diff --git a/mysql-test/main/limit_rows_examined.test b/mysql-test/main/limit_rows_examined.test index 512058e..e1e4269 100644 --- a/mysql-test/main/limit_rows_examined.test +++ b/mysql-test/main/limit_rows_examined.test @@ -445,11 +445,11 @@ INSERT INTO t3 VALUES ('USASpanish',8),('USATagalog',0),('USAVietnamese',0); EXPLAIN SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; SELECT DISTINCT a AS field1 FROM t1, t2 WHERE EXISTS (SELECT c FROM t3 LEFT JOIN t2 ON b = d) -HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 20; +HAVING field1 > 'aaa' LIMIT ROWS EXAMINED 15; EXPLAIN SELECT DISTINCT a FROM t1, t2 HAVING a > ' ' LIMIT ROWS EXAMINED 14; @@ -550,11 +550,15 @@ INSERT INTO t2 VALUES (5, 0),(3, 4),(6, 1), (5, 8),(4, 9),(8, 1); +set expensive_subquery_limit=5; + SELECT (SELECT MAX(c) FROM t1, t2) FROM t2 WHERE c = (SELECT MAX(b) FROM t2) LIMIT ROWS EXAMINED 3; +set expensive_subquery_limit=default; + drop table t1, t2; --echo diff --git a/mysql-test/main/outfile.result b/mysql-test/main/outfile.result index 4c439c3..50ae130 100644 Binary files a/mysql-test/main/outfile.result and b/mysql-test/main/outfile.result differ diff --git a/mysql-test/main/outfile.test b/mysql-test/main/outfile.test index 9f2fc22..e5294f0 100644 --- a/mysql-test/main/outfile.test +++ b/mysql-test/main/outfile.test @@ -62,6 +62,7 @@ select load_file(concat(@tmpdir,"/outfile-test.4")); # CREATE TABLE t1 (a INT); +--error ER_OPTION_PREVENTS_STATEMENT EXPLAIN SELECT * INTO OUTFILE '/tmp/t1.txt' diff --git a/mysql-test/main/subselect_mat.result b/mysql-test/main/subselect_mat.result index a8cad01..e2f8800 100644 --- a/mysql-test/main/subselect_mat.result +++ b/mysql-test/main/subselect_mat.result @@ -2872,7 +2872,7 @@ EXPLAIN SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used -3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1); (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1) diff --git a/mysql-test/main/type_year.result b/mysql-test/main/type_year.result index aaee504..b99a566 100644 --- a/mysql-test/main/type_year.result +++ b/mysql-test/main/type_year.result @@ -398,7 +398,6 @@ a 00 select a from t1 where a=y2k(); a -00 select a from t1 where a=b; a drop table t1; diff --git a/sql/field.cc b/sql/field.cc index 5a618a5..bff8e90 100644 --- a/sql/field.cc +++ b/sql/field.cc @@ -1387,7 +1387,9 @@ bool Field::can_optimize_range(const Item_bool_func *cond, { DBUG_ASSERT(cmp_type() != TIME_RESULT); // Handled in Field_temporal DBUG_ASSERT(cmp_type() != STRING_RESULT); // Handled in Field_str descendants - return item->cmp_type() != TIME_RESULT; + return (item->cmp_type() != TIME_RESULT) && + !(item->type() == Item::SUBSELECT_ITEM && + ((Item_subselect *)item)->is_expensive()); } diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index fcdb2aa..c7295f1 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -5794,6 +5794,8 @@ bool fix_escape_item(THD *thd, Item *escape_item, String *tmp_str, bool escape_used_in_parsing, CHARSET_INFO *cmp_cs, int *escape) { + if (thd->lex->context_analysis_only) + return false; /* ESCAPE clause accepts only constant arguments and Item_param. @@ -5803,9 +5805,13 @@ bool fix_escape_item(THD *thd, Item *escape_item, String *tmp_str, reach val_int(), so we won't need the value. CONTEXT_ANALYSIS_ONLY_DERIVED being a notable exception here. */ +#if 0 if (!escape_item->const_during_execution() || (!escape_item->const_item() && !(thd->lex->context_analysis_only & ~CONTEXT_ANALYSIS_ONLY_DERIVED))) +#else + if (!escape_item->const_item()) +#endif { my_error(ER_WRONG_ARGUMENTS,MYF(0),"ESCAPE"); return TRUE; diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc index 9e6c205..ff366ad 100644 --- a/sql/item_subselect.cc +++ b/sql/item_subselect.cc @@ -1019,7 +1019,11 @@ table_map Item_subselect::used_tables() const bool Item_subselect::const_item() const { DBUG_ASSERT(thd); - return (thd->lex->context_analysis_only || with_recursive_reference ? + if (unit->executed_at_prepare_phase() && !thd->lex->context_analysis_only) + return true; + return (!(thd->lex->m_sql_cmd && + thd->lex->m_sql_cmd->is_prepared()) || + with_recursive_reference ? FALSE : forced_const || const_item_cache); } diff --git a/sql/sql_cache.cc b/sql/sql_cache.cc index b284189..a22ed36 100644 --- a/sql/sql_cache.cc +++ b/sql/sql_cache.cc @@ -4214,6 +4214,8 @@ my_bool Query_cache::ask_handler_allowance(THD *thd, for (; tables_used; tables_used= tables_used->next_global) { + if (tables_used->is_view_or_derived()) + continue; TABLE *table; handler *handler; if (!(table= tables_used->table)) diff --git a/sql/sql_class.cc b/sql/sql_class.cc index c6a929d..08dc375 100644 --- a/sql/sql_class.cc +++ b/sql/sql_class.cc @@ -643,6 +643,7 @@ THD::THD(my_thread_id id, bool is_wsrep_applier) table_map_for_update(0), m_examined_row_count(0), accessed_rows_and_keys(0), + accessed_rows_and_keys_at_exec_start(0), m_digest(NULL), m_statement_psi(NULL), m_transaction_psi(NULL), diff --git a/sql/sql_class.h b/sql/sql_class.h index b54f35a..e0c3256 100644 --- a/sql/sql_class.h +++ b/sql/sql_class.h @@ -3420,6 +3420,7 @@ class THD: public THD_count, /* this must be first */ changed or written. */ ulonglong accessed_rows_and_keys; + ulonglong accessed_rows_and_keys_at_exec_start; /** Check if the number of rows accessed by a statement exceeded @@ -3427,7 +3428,8 @@ class THD: public THD_count, /* this must be first */ */ inline void check_limit_rows_examined() { - if (++accessed_rows_and_keys > lex->limit_rows_examined_cnt) + if ((++accessed_rows_and_keys - accessed_rows_and_keys_at_exec_start) > + lex->limit_rows_examined_cnt) set_killed(ABORT_QUERY); } diff --git a/sql/sql_delete.h b/sql/sql_delete.h index ad018ed..50d37ce 100644 --- a/sql/sql_delete.h +++ b/sql/sql_delete.h @@ -84,7 +84,7 @@ class Sql_cmd_delete final : public Sql_cmd_dml private: /** - @biefSpecial handling of single-table deletes after prepare phase + @brief Special handling of single-table deletes after prepare phase */ bool delete_from_single_table(THD *thd); diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc index 6e042d2..5228cff 100644 --- a/sql/sql_insert.cc +++ b/sql/sql_insert.cc @@ -5331,3 +5331,130 @@ void select_create::abort_result_set() DBUG_VOID_RETURN; } + + +bool Sql_cmd_insert_base::precheck(THD *thd) +{ +#if 0 + /* + Since INSERT DELAYED doesn't support temporary tables, we could + not pre-open temporary tables for SQLCOM_INSERT / SQLCOM_REPLACE. + Open them here instead. + */ + if (first_table->lock_type != TL_WRITE_DELAYED && + thd->open_temporary_tables(lex->query_tables)) + return true; + + if (insert_precheck(thd, lex->query_tables)) + return true; + + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_INSERT_REPLACE); + + return false; + +#ifdef WITH_WSREP +wsrep_error_label: +#endif +#endif + return true; +} + + +bool Sql_cmd_insert_base::prepare_inner(THD *thd) +{ +#if 0 + SELECT_LEX *const select_lex= thd->lex->first_select_lex(); + TABLE_LIST *const table_list= select_lex->get_table_list(); + Name_resolution_context *context= &select_lex->context; + Name_resolution_context_state ctx_state; + const bool select_insert= insert_many_values.elements == 0; + bool insert_into_view= (table_list->view != 0); + TABLE *table; + + DBUG_ENTER("Sql_cmd_insert_base::prepare_inner"); + + (void) read_statistics_for_tables_if_needed(thd, table_list); + + { + if (mysql_handle_derived(lex, DT_INIT)) + DBUG_RETURN(TRUE); + if (mysql_handle_derived(lex, DT_MERGE_FOR_INSERT)) + DBUG_RETURN(TRUE); + if (mysql_handle_derived(lex, DT_PREPARE)) + DBUG_RETURN(TRUE); + } + + insert_field_list= thd->lex->field_list; + + if (duplicates == DUP_UPDATE) + { + /* it should be allocated before Item::fix_fields() */ + if (table_list->set_insert_values(thd->mem_root)) + DBUG_RETURN(TRUE); + } + + table= table_list->table; + + if (table->file->check_if_updates_are_ignored("INSERT")) + DBUG_RETURN(-1); + + if (!table_list->single_table_updatable()) + { + my_error(ER_NON_INSERTABLE_TABLE, MYF(0), table_list->alias.str, "INSERT"); + DBUG_RETURN(TRUE); + } + + /* + first table in list is the one we'll INSERT into, requires INSERT_ACL. + all others require SELECT_ACL only. the ACL requirement below is for + new leaves only anyway (view-constituents), so check for SELECT rather + than INSERT. + */ + if (setup_tables_and_check_access(thd, + &select_lex->context, + &select_lex->top_join_list, + table_list, + select_lex->leaf_tables, + select_insert, INSERT_ACL, SELECT_ACL, + TRUE)) + DBUG_RETURN(TRUE); + + if (insert_into_view && !insert_field_list.elements) + { + thd->lex->empty_field_list_on_rset= 1; + if (!table_list->table || table_list->is_multitable()) + { + my_error(ER_VIEW_NO_INSERT_FIELD_LIST, MYF(0), + table_list->view_db.str, table_list->view_name.str); + DBUG_RETURN(TRUE); + } + if (insert_view_fields(thd, &insert_field_list, table_list)) + DBUG_RETURN(TRUE); + } + + if (thd->lex->has_returning()) + { + status_var_increment(thd->status_var.feature_insert_returning); + + /* This is INSERT ... RETURNING. It will return output to the client */ + if (thd->lex->analyze_stmt) + { + /* + Actually, it is ANALYZE .. INSERT .. RETURNING. We need to produce + output and then discard it. + */ + result= new (thd->mem_root) select_send_analyze(thd); + save_protocol= thd->protocol; + thd->protocol= new Protocol_discard(thd); + } + else + { + if (!(result= new (thd->mem_root) select_send(thd))) + DBUG_RETURN(TRUE); + } + } +#else + return false; +#endif +} + diff --git a/sql/sql_insert.h b/sql/sql_insert.h index 8b034c2..eae3b53 100644 --- a/sql/sql_insert.h +++ b/sql/sql_insert.h @@ -18,6 +18,7 @@ #include "sql_class.h" /* enum_duplicates */ #include "sql_list.h" +#include "sql_base.h" /* Instead of including sql_lex.h we add this typedef here */ typedef List<Item> List_item; @@ -51,4 +52,139 @@ bool binlog_drop_table(THD *thd, TABLE *table); inline void kill_delayed_threads(void) {} #endif + +/** + Base class for all INSERT and REPLACE statements. Abstract class that + is inherited by Sql_cmd_insert_values and Sql_cmd_insert_select. +*/ + +class Sql_cmd_insert_base : public Sql_cmd_dml +{ +protected: + virtual bool precheck(THD *thd) override; + + virtual bool prepare_inner(THD *thd) override; + +private: + bool resolve_update_expressions(THD *thd); + bool prepare_values_table(THD *thd); + bool resolve_values_table_columns(THD *thd); + + /** + Field list to insert/replace + + One of two things: + 1. For the INSERT/REPLACE ... (col1, ... colN) VALUES ... syntax + this is a list of col1, ..., colN fields. + 2. For the INSERT/REPLACE ... SET col1=x1, ... colM=xM syntax extension + this is a list of col1, ... colM fields as well. + */ + List<Item> insert_field_list; + +public: + /* + field_list was created for view and should be removed before PS/SP + rexecuton + */ + bool empty_field_list_on_rset; + + DML_prelocking_strategy *get_dml_prelocking_strategy() + { + return &dml_prelocking_strategy; + } + +protected: + const bool is_replace; + + /** + Row data to insert/replace + + One of two things: + 1. For the INSERT/REPLACE ... VALUES (row1), (row2), ... (rowN) syntax + the list contains N List_item lists: one List_item per row. + 2. For the INSERT/REPLACE ... SET col1=x1, ... colM=xM syntax extension + this list contains only 1 List_item of M data values: this way we + emulate this syntax: + INSERT/REPLACE ... (col1, ... colM) VALUE (x1, ..., xM); + */ + List<List_item> insert_many_values; + + /* + Number of values per row in insert_many_values, available after resolving + */ + uint value_count; + + /* ON DUPLICATE KEY UPDATE field list */ + List<Item> update_field_list; + + const enum_duplicates duplicates; + + Protocol *save_protocol; /**< needed for ANALYZE .. INSERT .. RETURNING */ + + explicit Sql_cmd_insert_base(bool is_replace_arg, + enum_duplicates duplicates_arg) + : empty_field_list_on_rset(false), + is_replace(is_replace_arg), + value_count(0), + duplicates(duplicates_arg), + save_protocol(NULL) + {} + +#if 0 + virtual void cleanup(THD *thd) override + { + if (empty_field_list_on_rset) + { + empty_field_list_on_rset = false; + insert_field_list.empty(); + } + } +#endif + +private: + + /* The prelocking strategy used when opening the used tables */ + DML_prelocking_strategy dml_prelocking_strategy; + +}; + + +/** + Class that implements INSERT ... VALUES and REPLACE ... VALUES statements. +*/ + +class Sql_cmd_insert_values final : public Sql_cmd_insert_base +{ +public: + explicit Sql_cmd_insert_values(bool is_replace_arg, + enum_duplicates duplicates_arg) + : Sql_cmd_insert_base(is_replace_arg, duplicates_arg) {} + + enum_sql_command sql_command_code() const + { + return is_replace ? SQLCOM_REPLACE : SQLCOM_INSERT; + } + +}; + + +/** + Class that implements INSERT ... SELECT and REPLACE ... SELECT statements. +*/ + +class Sql_cmd_insert_select final : public Sql_cmd_insert_base +{ +public: + explicit Sql_cmd_insert_select(bool is_replace_arg, + enum_duplicates duplicates_arg) + : Sql_cmd_insert_base(is_replace_arg, duplicates_arg) {} + + enum_sql_command sql_command_code() const + { + return is_replace ? SQLCOM_REPLACE_SELECT : SQLCOM_INSERT_SELECT; + } +}; + + + #endif /* SQL_INSERT_INCLUDED */ diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 8a24d2f..0b08fbc 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -42,6 +42,8 @@ #endif #include "sql_update.h" // class Sql_cmd_update #include "sql_delete.h" // class Sql_cmd_delete +#include "sql_insert.h" // class Sql_cmd_insert + void LEX::parse_error(uint err_number) { @@ -10357,13 +10359,19 @@ SELECT_LEX *LEX::parsed_subselect(SELECT_LEX_UNIT *unit) bool LEX::parsed_insert_select(SELECT_LEX *first_select) { + bool is_insert_or_replace= false; + bool is_replace= false; if (sql_command == SQLCOM_INSERT || sql_command == SQLCOM_REPLACE) { + is_insert_or_replace= true; if (sql_command == SQLCOM_INSERT) sql_command= SQLCOM_INSERT_SELECT; else + { + is_replace= true; sql_command= SQLCOM_REPLACE_SELECT; + } } insert_select_hack(first_select); if (check_main_unit_semantics()) @@ -10373,6 +10381,23 @@ bool LEX::parsed_insert_select(SELECT_LEX *first_select) SELECT_LEX *blt __attribute__((unused))= pop_select(); DBUG_ASSERT(blt == &builtin_select); push_select(first_select); + + if (is_insert_or_replace) + { + if (sql_command == SQLCOM_INSERT || sql_command == SQLCOM_REPLACE) + { + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_insert_values(is_replace, + duplicates))) + return true; + } + else + { + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_insert_select(is_replace, + duplicates))) + return true; + } + } + return false; } @@ -10454,6 +10479,8 @@ bool LEX::select_finalize(st_select_lex_unit *expr) { sql_command= SQLCOM_SELECT; selects_allow_procedure= TRUE; + if (!(m_sql_cmd= new (thd->mem_root) Sql_cmd_select(result))) + return true; if (set_main_unit(expr)) return true; return check_main_unit_semantics(); @@ -11933,3 +11960,27 @@ bool SELECT_LEX_UNIT::is_derived_eliminated() const return true; return derived->table->map & outer_select()->join->eliminated_tables; } + +bool SELECT_LEX_UNIT::executed_at_prepare_phase() +{ + for (SELECT_LEX *sl= first_select(); sl; sl= sl->next_select()) + { + if (!sl->executed_at_prepare_phase()) + return false; + } + return true; +} + +bool SELECT_LEX::executed_at_prepare_phase() +{ + if (table_list.elements || is_correlated) + return false; + for (st_select_lex_unit *unit= first_inner_unit(); + unit; + unit= unit->next_unit()) + { + if (!unit->executed_at_prepare_phase()) + return false; + } + return true; +} diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 5a7fa14..491ea1c 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -1034,6 +1034,8 @@ class st_select_lex_unit: public st_select_lex_node { bool explainable() const; + bool executed_at_prepare_phase(); + void reset_distinct(); void fix_distinct(); @@ -1480,6 +1482,8 @@ class st_select_lex: public st_select_lex_node ORDER *order, enum_query_type query_type); void print_limit(THD *thd, String *str, enum_query_type query_type); + bool prepare(THD *thd, select_result *result); + bool exec(THD *thd); void fix_prepare_information(THD *thd, Item **conds, Item **having_conds); /* Destroy the used execution plan (JOIN) of this subtree (this @@ -1653,6 +1657,7 @@ class st_select_lex: public st_select_lex_node bool is_unit_nest() { return (nest_flags & UNIT_NEST_FL); } void mark_as_unit_nest() { nest_flags= UNIT_NEST_FL; } bool is_sj_conversion_prohibited(THD *thd); + bool executed_at_prepare_phase(); }; typedef class st_select_lex SELECT_LEX; diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 67353a1..c7bc972 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -3907,7 +3907,9 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) case SQLCOM_SHOW_COLLATIONS: case SQLCOM_SHOW_STORAGE_ENGINES: case SQLCOM_SHOW_PROFILE: +#if 0 case SQLCOM_SELECT: +#endif { #ifdef WITH_WSREP if (lex->sql_command == SQLCOM_SELECT) @@ -4382,6 +4384,17 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) res = mysql_checksum_table(thd, first_table, &lex->check_opt); break; } + case SQLCOM_SELECT: + { + res = lex->m_sql_cmd->execute(thd); + break; + } +#if 0 + case SQLCOM_REPLACE: + case SQLCOM_INSERT: + case SQLCOM_REPLACE_SELECT: + case SQLCOM_INSERT_SELECT: +#endif case SQLCOM_UPDATE: case SQLCOM_UPDATE_MULTI: case SQLCOM_DELETE: @@ -4394,6 +4407,7 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) thd->abort_on_warning= 0; break; } +#if 1 case SQLCOM_REPLACE: if ((res= generate_incident_event(thd))) break; @@ -4653,6 +4667,7 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt) break; } +#endif case SQLCOM_DROP_SEQUENCE: case SQLCOM_DROP_TABLE: { @@ -7340,6 +7355,7 @@ void THD::reset_for_next_command(bool do_clear_error) get_stmt_da()->reset_for_next_command(); m_sent_row_count= m_examined_row_count= 0; accessed_rows_and_keys= 0; + accessed_rows_and_keys_at_exec_start= 0; reset_slow_query_state(); @@ -7476,6 +7492,8 @@ void create_select_for_variable(THD *thd, LEX_CSTRING *var_name) lex= thd->lex; lex->init_select(); lex->sql_command= SQLCOM_SELECT; + lex->m_sql_cmd= new (thd->mem_root) Sql_cmd_select(thd->lex->result); + /* We set the name of Item to @@session.var_name because that then is used as the column name in the output. diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc index 22780c8..0bbde42 100644 --- a/sql/sql_prepare.cc +++ b/sql/sql_prepare.cc @@ -2268,6 +2268,48 @@ static bool check_prepared_statement(Prepared_statement *stmt) lex->m_sql_cmd->unprepare(thd); break; + case SQLCOM_SELECT: +#if 0 + if (lex->m_sql_cmd == NULL && + !(lex->m_sql_cmd= + new (thd->mem_root) Sql_cmd_select(thd->lex->result))) + { + res= 1; + break; + } +#endif + lex->m_sql_cmd->set_owner(stmt); + res = lex->m_sql_cmd->prepare(thd); + if (res == 2) + { + /* Statement and field info has already been sent */ + DBUG_RETURN(FALSE); + } + if (!res && !lex->describe && !lex->analyze_stmt && !stmt->is_sql_prepare()) + { + SELECT_LEX_UNIT *const unit = &lex->unit; + /* Make copy of item list, as change_columns may change it */ + SELECT_LEX_UNIT* master_unit= unit->first_select()->master_unit(); + bool is_union_op= + master_unit->is_unit_op() || master_unit->fake_select_lex; + + List<Item> fields(is_union_op ? unit->item_list : + lex->first_select_lex()->item_list); + + /* Change columns if a procedure like analyse() */ + res= (unit->last_procedure && + unit->last_procedure->change_columns(thd, fields)); + + if (res || send_prep_stmt(stmt, lex->result->field_count(fields)) || + lex->result->send_result_set_metadata(fields, + Protocol::SEND_EOF) || + thd->protocol->flush()) + res= true; + } + if (!res) + lex->m_sql_cmd->unprepare(thd); + break; + /* The following allow WHERE clause, so they must be tested like SELECT */ case SQLCOM_SHOW_DATABASES: case SQLCOM_SHOW_TABLES: @@ -2285,7 +2327,9 @@ static bool check_prepared_statement(Prepared_statement *stmt) case SQLCOM_SHOW_STATUS_FUNC: case SQLCOM_SHOW_STATUS_PACKAGE: case SQLCOM_SHOW_STATUS_PACKAGE_BODY: +#if 0 case SQLCOM_SELECT: +#endif res= mysql_test_select(stmt, tables); if (res == 2) { @@ -2469,12 +2513,14 @@ static bool check_prepared_statement(Prepared_statement *stmt) lex->describe, lex->analyze_stmt) || send_prep_stmt(stmt, result.field_count(field_list)) || result.send_result_set_metadata(field_list, - Protocol::SEND_EOF); + Protocol::SEND_EOF) || + thd->protocol->flush(); + } + else if (lex->sql_command != SQLCOM_SELECT) + { + res= send_prep_stmt(stmt, 0) || + thd->protocol->flush(); } - else - res= send_prep_stmt(stmt, 0); - if (!res) - thd->protocol->flush(); } DBUG_RETURN(FALSE); } diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 4b01a96..88bdfaa 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -55,6 +55,9 @@ #include "sql_cte.h" #include "sql_window.h" #include "tztime.h" +#ifdef WITH_WSREP +#include "wsrep_mysqld.h" +#endif #include "debug_sync.h" // DEBUG_SYNC #include <m_ctype.h> @@ -4989,21 +4992,22 @@ void JOIN::cleanup_item_list(List<Item> &items) const 0 otherwise */ -select_handler *find_select_handler(THD *thd, - SELECT_LEX* select_lex) +select_handler *SELECT_LEX::find_select_handler(THD *thd) { - if (select_lex->next_select()) + if (next_select()) return 0; - if (select_lex->master_unit()->outer_select()) + if (master_unit()->outer_select()) return 0; TABLE_LIST *tbl= nullptr; - // For SQLCOM_INSERT_SELECT the server takes TABLE_LIST - // from thd->lex->query_tables and skips its first table - // b/c it is the target table for the INSERT..SELECT. + /* + For SQLCOM_INSERT_SELECT the server takes TABLE_LIST + from thd->lex->query_tables and skips its first table + b/c it is the target table for the INSERT..SELECT. + */ if (thd->lex->sql_command != SQLCOM_INSERT_SELECT) { - tbl= select_lex->join->tables_list; + tbl= join->tables_list; } else if (thd->lex->query_tables && thd->lex->query_tables->next_global) @@ -5020,7 +5024,7 @@ select_handler *find_select_handler(THD *thd, handlerton *ht= tbl->table->file->partition_ht(); if (!ht->create_select) continue; - select_handler *sh= ht->create_select(thd, select_lex); + select_handler *sh= ht->create_select(thd, this); return sh; } return 0; @@ -5136,7 +5140,7 @@ mysql_select(THD *thd, TABLE_LIST *tables, List<Item> &fields, COND *conds, thd->get_stmt_da()->reset_current_row_for_warning(1); /* Look for a table owned by an engine with the select_handler interface */ - select_lex->pushdown_select= find_select_handler(thd, select_lex); + select_lex->pushdown_select= select_lex->find_select_handler(thd); if ((err= join->optimize())) { @@ -12720,7 +12724,8 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, (select thats very heavy) => is a constant here eg: (select avg(order_cost) from orders) => constant but expensive */ - if (!keyuse->val->used_tables() && !thd->lex->describe) + if (keyuse->val->const_item() && !keyuse->val->is_expensive() && + !thd->lex->describe) { // Compare against constant store_key_item tmp(thd, keyinfo->key_part[i].field, @@ -32348,6 +32353,9 @@ static void MYSQL_DML_START(THD *thd) { switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + MYSQL_INSERT_START(thd->query()); + break; case SQLCOM_UPDATE: MYSQL_UPDATE_START(thd->query()); break; @@ -32370,6 +32378,9 @@ static void MYSQL_DML_DONE(THD *thd, int rc) { switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + MYSQL_SELECT_DONE(rc, (rc ? 0 : (ulong) (thd->limit_found_rows))); + break; case SQLCOM_UPDATE: MYSQL_UPDATE_DONE( rc, @@ -32437,8 +32448,6 @@ bool Sql_cmd_dml::prepare(THD *thd) MYSQL_DML_START(thd); - lex->context_analysis_only|= CONTEXT_ANALYSIS_ONLY_DERIVED; - if (open_tables_for_query(thd, lex->query_tables, &table_count, 0, get_dml_prelocking_strategy())) { @@ -32451,8 +32460,6 @@ bool Sql_cmd_dml::prepare(THD *thd) if (prepare_inner(thd)) goto err; - lex->context_analysis_only&= ~CONTEXT_ANALYSIS_ONLY_DERIVED; - set_prepared(); unit->set_prepared(); @@ -32528,6 +32535,7 @@ bool Sql_cmd_dml::execute(THD *thd) { if (lock_tables(thd, lex->query_tables, table_count, 0)) goto err; + query_cache_store_query(thd, thd->lex->query_tables); } unit->set_limit(select_lex); @@ -32581,8 +32589,266 @@ bool Sql_cmd_dml::execute(THD *thd) bool Sql_cmd_dml::execute_inner(THD *thd) { SELECT_LEX_UNIT *unit = &lex->unit; - SELECT_LEX *select_lex= unit->first_select(); - JOIN *join= select_lex->join; + DBUG_ENTER("Sql_cmd_dml::execute_inner"); + + if (unit->is_unit_op() || unit->fake_select_lex) + { + if (unit->exec()) + DBUG_RETURN(true); + } +#if 1 + else + { + SELECT_LEX *select_lex= unit->first_select(); + if (select_lex->exec(thd)) + DBUG_RETURN(true); + } +#endif + + DBUG_RETURN(false); +} + + +bool Sql_cmd_select::precheck(THD *thd) +{ + bool rc= false; + + privilege_t privileges_requested= SELECT_ACL; + + if (lex->exchange) + { + /* + lex->exchange != NULL implies SELECT .. INTO OUTFILE and this + requires FILE_ACL access. + */ + privileges_requested|= FILE_ACL; + } + + TABLE_LIST *tables = thd->lex->query_tables; + + if (tables) + rc= check_table_access(thd, privileges_requested, + tables, false, UINT_MAX, false); + else + rc= check_access(thd, privileges_requested, + any_db.str, NULL, NULL, false, false); + +#ifdef WITH_WSREP + if (lex->sql_command == SQLCOM_SELECT) + { + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_READ); + } + else + { + WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_SHOW); +# ifdef ENABLED_PROFILING + if (lex->sql_command == SQLCOM_SHOW_PROFILE) + thd->profiling.discard_current_query(); +# endif + } +#endif /* WITH_WSREP */ + + if (!rc) + return false; + +#ifdef WITH_WSREP +wsrep_error_label: +#endif + return true; +} + + + +bool Sql_cmd_select::prepare_inner(THD *thd) +{ + bool rc= false; + LEX *lex= thd->lex; + TABLE_LIST *tables= lex->query_tables; + SELECT_LEX_UNIT *const unit = &lex->unit; + + DBUG_ENTER("Sql_cmd_select::prepare_inner"); + + if (!thd->stmt_arena->is_stmt_prepare()) + (void) read_statistics_for_tables_if_needed(thd, tables); + + { + if (mysql_handle_derived(lex, DT_INIT)) + DBUG_RETURN(TRUE); + } + + if (thd->stmt_arena->is_stmt_prepare()) + { + if (!result) + { + Query_arena backup; + Query_arena *arena= thd->activate_stmt_arena_if_needed(&backup); + result= new (thd->mem_root) select_send(thd); + if (arena) + thd->restore_active_arena(arena, &backup); + thd->lex->result= result; + } + rc= unit->prepare(unit->derived, 0, 0); + + } + else + { + if (lex->analyze_stmt) + { + if (result && result->result_interceptor()) + result->result_interceptor()->disable_my_ok_calls(); + else + { + DBUG_ASSERT(thd->protocol); + result= new (thd->mem_root) select_send_analyze(thd); + save_protocol= thd->protocol; + thd->protocol= new Protocol_discard(thd); + } + } + else if (!(result= lex->result)) + result= new (thd->mem_root) select_send(thd); + if (!result) + DBUG_RETURN(TRUE); + + SELECT_LEX *parameters = unit->global_parameters(); + if (!parameters->limit_params.explicit_limit) + { + parameters->limit_params.select_limit = + new (thd->mem_root) Item_int(thd, + (ulonglong) thd->variables.select_limit); + if (parameters->limit_params.select_limit == NULL) + DBUG_RETURN(true); /* purecov: inspected */ + } + ulonglong select_options= 0; + if (lex->describe) + select_options|= SELECT_DESCRIBE; + if (unit->is_unit_op() || unit->fake_select_lex) + select_options|= SELECT_NO_UNLOCK; + rc= unit->prepare(unit->derived, result, select_options); + + if (rc && thd->lex->analyze_stmt && save_protocol) + { + delete thd->protocol; + thd->protocol= save_protocol; + } + } + + DBUG_RETURN(rc); +} + + +bool Sql_cmd_select::execute_inner(THD *thd) +{ + DBUG_ENTER("Sql_cmd_select::execute_inner"); + + thd->status_var.last_query_cost= 0.0; + + bool res= Sql_cmd_dml::execute_inner(thd); + + res|= thd->is_error(); + if (unlikely(res)) + result->abort_result_set(); + + if (result != thd->lex->result) + { + delete result; + result= 0; + } + + if (lex->analyze_stmt) + { + if (save_protocol) + { + delete thd->protocol; + thd->protocol= save_protocol; + } + if (!res) + res= thd->lex->explain->send_explain(thd); + } + + if (thd->lex->describe) + { + if (!res) + res= thd->lex->explain->send_explain(thd); + + if (!res && (thd->lex->describe & DESCRIBE_EXTENDED)) + { + char buff[1024]; + String str(buff,(uint32) sizeof(buff), system_charset_info); + str.length(0); + /* + The warnings system requires input in utf8, @see + mysqld_show_warnings(). + */ + lex->unit.print(&str, QT_EXPLAIN_EXTENDED); + push_warning(thd, Sql_condition::WARN_LEVEL_NOTE, + ER_YES, str.c_ptr_safe()); + } + } + + if (unlikely(thd->killed == ABORT_QUERY && !thd->no_errors)) + { + /* + If LIMIT ROWS EXAMINED interrupted query execution, issue a warning, + continue with normal processing and produce an incomplete query result. + */ + bool saved_abort_on_warning= thd->abort_on_warning; + thd->abort_on_warning= false; + push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN, + ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT, + ER_THD(thd, ER_QUERY_EXCEEDED_ROWS_EXAMINED_LIMIT), + thd->accessed_rows_and_keys - + thd->accessed_rows_and_keys_at_exec_start, + thd->lex->limit_rows_examined->val_uint()); + thd->abort_on_warning= saved_abort_on_warning; + thd->reset_killed(); + } + /* Disable LIMIT ROWS EXAMINED after query execution. */ + thd->lex->limit_rows_examined_cnt= ULONGLONG_MAX; + + /* Count number of empty select queries */ + if (!thd->get_sent_row_count() && !res) + status_var_increment(thd->status_var.empty_queries); + else + status_var_add(thd->status_var.rows_sent, thd->get_sent_row_count()); + + DBUG_RETURN(res); +} + + +bool st_select_lex::prepare(THD *thd, select_result *result) +{ + ulonglong select_options= options | thd->variables.option_bits; + + DBUG_ENTER("st_select_lex::prepare"); + + if (thd->lex->describe) + select_options|= SELECT_DESCRIBE; + + if (!(join= new (thd->mem_root) JOIN(thd, item_list, + select_options, result))) + DBUG_RETURN(true); + + SELECT_LEX_UNIT *unit= master_unit(); + + thd->lex->used_tables=0; + + if (join->prepare(table_list.first, where, + order_list.elements + group_list.elements, + order_list.first, false, group_list.first, + having, thd->lex->proc_list.first, + this, unit)) + DBUG_RETURN(true); + + DBUG_RETURN(false); +} + + +bool st_select_lex::exec(THD *thd) +{ + DBUG_ENTER("st_select_lex::exec"); + + /* Look for a table owned by an engine with the select_handler interface */ + pushdown_select= find_select_handler(thd); if (join->optimize()) goto err; @@ -32596,19 +32862,29 @@ bool Sql_cmd_dml::execute_inner(THD *thd) if (unlikely(thd->is_error())) goto err; - if (join->exec()) + thd->get_stmt_da()->reset_current_row_for_warning(1); + + if (master_unit()->outer_select() == NULL) + thd->accessed_rows_and_keys_at_exec_start= thd->accessed_rows_and_keys; + + if (join->exec() goto err; if (thd->lex->describe & DESCRIBE_EXTENDED) { - select_lex->where= join->conds_history; - select_lex->having= join->having_history; + where= join->conds_history; + having= join->having_history; } err: - return join->error; -} + if (pushdown_select) + { + delete pushdown_select; + pushdown_select= NULL; + } + DBUG_RETURN(join->error); +} /** @} (end of group Query_Optimizer) diff --git a/sql/sql_select.h b/sql/sql_select.h index f908484..edbaed3 100644 --- a/sql/sql_select.h +++ b/sql/sql_select.h @@ -33,6 +33,8 @@ #include "records.h" /* READ_RECORD */ #include "opt_range.h" /* SQL_SELECT, QUICK_SELECT_I */ #include "filesort.h" +#include "sql_base.h" +#include "sql_cmd.h" typedef struct st_join_table JOIN_TAB; /* Values in optimize */ @@ -2629,4 +2631,39 @@ void propagate_new_equalities(THD *thd, Item *cond, bool *is_simplifiable_cond); bool dbug_user_var_equals_str(THD *thd, const char *name, const char *value); + + +class Sql_cmd_select : public Sql_cmd_dml +{ +public: + explicit Sql_cmd_select(select_result *result_arg) + : Sql_cmd_dml(), save_protocol(NULL) + { result= result_arg; } + + enum_sql_command sql_command_code() const override + { + return SQLCOM_SELECT; + } + + DML_prelocking_strategy *get_dml_prelocking_strategy() + { + return &dml_prelocking_strategy; + } + +protected: + + bool precheck(THD *thd) override; + + bool prepare_inner(THD *thd) override; + + bool execute_inner(THD *thd) override; + +private: + /* The prelocking strategy used when opening the used tables */ + DML_prelocking_strategy dml_prelocking_strategy; + + Protocol *save_protocol; +}; + + #endif /* SQL_SELECT_INCLUDED */ diff --git a/sql/sql_union.cc b/sql/sql_union.cc index c1f28ba..0cc1e68 100644 --- a/sql/sql_union.cc +++ b/sql/sql_union.cc @@ -1322,6 +1322,24 @@ bool st_select_lex_unit::prepare(TABLE_LIST *derived_arg, describe= additional_options & SELECT_DESCRIBE; + if (describe) + { + for (SELECT_LEX *sl= first_sl; sl; sl= sl->next_select()) + { + sl->set_explain_type(FALSE); + sl->options|= SELECT_DESCRIBE; + } + if (is_unit_op() || fake_select_lex) + { + if (union_needs_tmp_table() && fake_select_lex) + { + fake_select_lex->select_number= FAKE_SELECT_LEX_ID; // just for initialization + fake_select_lex->type= unit_operation_text[common_op()]; + fake_select_lex->options|= SELECT_DESCRIBE; + } + } + } + /* Save fake_select_lex in case we don't need it for anything but global parameters. @@ -2160,6 +2178,8 @@ bool st_select_lex_unit::exec() bool was_executed= executed; DBUG_ENTER("st_select_lex_unit::exec"); + describe= thd->lex->describe; + if (executed && !uncacheable && !describe) DBUG_RETURN(FALSE); executed= 1; @@ -2168,6 +2188,9 @@ bool st_select_lex_unit::exec() item->make_const(); saved_error= optimize(); + + if (outer_select() == NULL) + thd->accessed_rows_and_keys_at_exec_start= thd->accessed_rows_and_keys; create_explain_query_if_not_exists(thd->lex, thd->mem_root); @@ -2239,6 +2262,7 @@ bool st_select_lex_unit::exec() saved_error= sl->join->optimize(); } } + if (likely(!saved_error)) { records_at_start= table->file->stats.records; diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy index 49655f8..886c0b6 100644 --- a/sql/sql_yacc.yy +++ b/sql/sql_yacc.yy @@ -71,6 +71,7 @@ #include "json_table.h" #include "sql_update.h" #include "sql_delete.h" +#include "sql_insert.h" /* this is to get the bison compilation windows warnings out */ #ifdef _MSC_VER

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[Commits] fc18f9c: Adjusted test results after rebase of MDEV-7487 related commits against 11.1
by IgorBabaev 16 Mar '23

16 Mar '23

revision-id: fc18f9c9ec15035894154fb7dcdd85caac73cfc2 (mariadb-11.0.1-35-gfc18f9c) parent(s): 1e0a72a18b134106da59be4594836b6b66bbc539 author: Igor Babaev committer: Igor Babaev timestamp: 2023-03-15 18:29:05 -0700 message: Adjusted test results after rebase of MDEV-7487 related commits against 11.1 --- mysql-test/main/delete_use_source_engines.result | 32 +++++++++++----------- .../main/myisam_explain_non_select_all.result | 6 ++-- 2 files changed, 19 insertions(+), 19 deletions(-) diff --git a/mysql-test/main/delete_use_source_engines.result b/mysql-test/main/delete_use_source_engines.result index fd0d3b8..b1ad9c0 100644 --- a/mysql-test/main/delete_use_source_engines.result +++ b/mysql-test/main/delete_use_source_engines.result @@ -91,7 +91,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 32 12.00 100.00 5.56 Using where; FirstMatch(t1) +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.00 3.12 5.56 Using where; FirstMatch(t1) select * from t1; c1 c2 c3 1 3 3 @@ -183,7 +183,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 12.50 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 32 24.50 100.00 1.02 Using where; FirstMatch(t1) +1 PRIMARY a ALL NULL NULL NULL NULL 32 24.50 3.12 1.02 Using where; FirstMatch(t1) select * from t1; c1 c2 c3 1 2 2 @@ -647,7 +647,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 32.00 9.38 9.38 Using where -1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 100.00 5.71 Using where; Using index; FirstMatch(t1) +1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 3.12 5.71 Using where; Using index; FirstMatch(t1) select * from t1; c1 c2 c3 1 3 3 @@ -783,8 +783,8 @@ order by c3 desc limit 1; explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) order by c3 desc limit 1; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort -1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using where; FirstMatch(t1) +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort +1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) order by c3 desc limit 1; id select_type table type possible_keys key key_len ref rows Extra @@ -1204,7 +1204,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 32 12.33 100.00 5.41 Using where; FirstMatch(t1) +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.33 3.12 5.41 Using where; FirstMatch(t1) select * from t1; c1 c2 c3 1 3 3 @@ -1854,7 +1854,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 32 12.67 100.00 5.26 Using where; FirstMatch(t1) +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.67 3.12 5.26 Using where; FirstMatch(t1) select * from t1; c1 c2 c3 1 3 3 @@ -1946,7 +1946,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 32 25.00 100.00 12.00 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 32 22.67 100.00 1.47 Using where; FirstMatch(t1) +1 PRIMARY a ALL NULL NULL NULL NULL 32 22.67 3.12 1.47 Using where; FirstMatch(t1) select * from t1; c1 c2 c3 1 2 2 @@ -2625,7 +2625,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 32.00 9.38 9.38 Using where -1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 100.00 5.71 Using where; Using index; FirstMatch(t1) +1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 3.12 5.71 Using where; Using index; FirstMatch(t1) select * from t1; c1 c2 c3 1 3 3 @@ -3394,7 +3394,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 32 12.00 100.00 5.56 Using where; FirstMatch(t1) +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.00 3.12 5.56 Using where; FirstMatch(t1) select * from t1; c1 c2 c3 1 3 3 @@ -4259,7 +4259,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 32 12.67 100.00 5.26 Using where; FirstMatch(t1) +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.67 3.12 5.26 Using where; FirstMatch(t1) select * from t1; c1 c2 c3 1 3 3 @@ -4351,7 +4351,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 32 25.00 100.00 12.00 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 32 22.67 100.00 1.47 Using where; FirstMatch(t1) +1 PRIMARY a ALL NULL NULL NULL NULL 32 22.67 3.12 1.47 Using where; FirstMatch(t1) select * from t1; c1 c2 c3 1 2 2 @@ -5030,7 +5030,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 32.00 9.38 9.38 Using where -1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 100.00 5.71 Using where; Using index; FirstMatch(t1) +1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 3.12 5.71 Using where; Using index; FirstMatch(t1) select * from t1; c1 c2 c3 1 3 3 @@ -5166,8 +5166,8 @@ order by c3 desc limit 1; explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) order by c3 desc limit 1; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort -1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using where; FirstMatch(t1) +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort +1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) order by c3 desc limit 1; id select_type table type possible_keys key key_len ref rows Extra @@ -5799,7 +5799,7 @@ id select_type table type possible_keys key key_len ref rows Extra analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 32 13.33 100.00 5.00 Using where; FirstMatch(t1) +1 PRIMARY a ALL NULL NULL NULL NULL 32 13.33 3.12 5.00 Using where; FirstMatch(t1) select * from t1; c1 c2 c3 1 3 3 diff --git a/mysql-test/main/myisam_explain_non_select_all.result b/mysql-test/main/myisam_explain_non_select_all.result index 8b2979b..28107af 100644 --- a/mysql-test/main/myisam_explain_non_select_all.result +++ b/mysql-test/main/myisam_explain_non_select_all.result @@ -270,7 +270,7 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a IN (SELECT b FROM t2 WHERE t1.a < 3); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where -1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 Using where; FirstMatch(t1) +1 PRIMARY t2 ALL NULL NULL NULL NULL 3 33.33 Using where; FirstMatch(t1) Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 # Status of EXPLAIN EXTENDED query @@ -908,7 +908,7 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a IN (SELECT a FROM t2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 -1 PRIMARY t2 ALL NULL NULL NULL NULL 4 100.00 Using where; FirstMatch(t1) +1 PRIMARY t2 ALL NULL NULL NULL NULL 4 25.00 Using where; FirstMatch(t1) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -994,7 +994,7 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 -1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; FirstMatch(t1) +1 PRIMARY t2 ALL NULL NULL NULL NULL 5 20.00 Using where; FirstMatch(t1) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4

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[Commits] fa896dc: MDEV-29390: Improve coverage for UPDATE and DELETE statements in MTR test suites
by IgorBabaev 15 Mar '23

15 Mar '23

revision-id: fa896dc433f835bbde98619d5091c482d2586e07 (mariadb-11.0.1-28-gfa896dc) parent(s): 2ae8dc24351b830fd15970758b65f58caf504678 author: Lena Startseva committer: Igor Babaev timestamp: 2023-03-15 14:19:02 -0700 message: MDEV-29390: Improve coverage for UPDATE and DELETE statements in MTR test suites Created tests for "delete" based on update_use_source.test For the update_use_source.test tests, data recovery in the table has been changed from a rollback transaction to a complete delete and re-insert of the data with optimize table. Cases are now being checked on three engines. Added tests for update/delete with LooseScan and DuplicateWeedout optimization strategies Added tests for engine MEMORY on delete and update Added tests for multi-update with JSON_TABLE Added tests for multi-update and multi-delete for engine Connect --- mysql-test/include/delete_use_source.inc | 94 + mysql-test/include/delete_use_source_cases.inc | 214 + .../include/delete_use_source_cases_memory.inc | 294 + .../include/delete_use_source_cases_non_innodb.inc | 81 + mysql-test/include/delete_use_source_innodb.inc | 91 + mysql-test/include/delete_use_source_memory.inc | 33 + mysql-test/include/update_use_source.inc | 292 +- mysql-test/include/update_use_source_cases.inc | 183 + mysql-test/include/update_use_source_ext.inc | 59 + mysql-test/main/delete_single_to_multi.result | 830 ++ mysql-test/main/delete_single_to_multi.test | 244 + mysql-test/main/delete_use_source_engines.result | 8870 ++++++++++++++++ mysql-test/main/delete_use_source_engines.test | 42 + mysql-test/main/update_single_to_multi.result | 615 ++ mysql-test/main/update_single_to_multi.test | 242 + mysql-test/main/update_use_source.result | 10273 +++++++++++++++++-- mysql-test/main/update_use_source.test | 250 +- mysql-test/suite/json/r/json_table.result | 101 + mysql-test/suite/json/t/json_table.test | 94 + storage/connect/mysql-test/connect/r/upd.result | 156 + storage/connect/mysql-test/connect/t/upd.test | 96 + 21 files changed, 22157 insertions(+), 997 deletions(-) diff --git a/mysql-test/include/delete_use_source.inc b/mysql-test/include/delete_use_source.inc new file mode 100644 index 0000000..3f78976 --- /dev/null +++ b/mysql-test/include/delete_use_source.inc @@ -0,0 +1,94 @@ +create table t1 (c1 integer, c2 integer, c3 integer); + +insert into t1(c1,c2,c3) + values (1,1,1),(1,2,2),(1,3,3), + (2,1,4),(2,2,5),(2,3,6), + (2,4,7),(2,5,8); +insert into t1 select c1+10,c2,c3+10 from t1; +insert into t1 select c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; + +create view v1 as select * from t1 where c2=2; + +--echo ####################################### +--echo # Test without any index # +--echo ####################################### +--source include/delete_use_source_cases.inc +--source include/delete_use_source_cases_non_innodb.inc + +--echo ####################################### +--echo # Test with an index # +--echo ####################################### +create index t1_c2 on t1 (c2,c1); +--source include/delete_use_source_cases.inc +--source include/delete_use_source_cases_non_innodb.inc + +--echo ####################################### +--echo # Test with a primary key # +--echo ####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +--source include/delete_use_source_cases.inc +--source include/delete_use_source_cases_non_innodb.inc + +drop view v1; +drop table t1; + +--echo # +--echo # Test on dynamic columns (blob) +--echo # +create table assets ( + item_name varchar(32) primary key, -- A common attribute for all items + dynamic_cols blob -- Dynamic columns will be stored here +); + +INSERT INTO assets + VALUES ('MariaDB T-shirt', + COLUMN_CREATE('color', 'blue', 'size', 'XL')); +INSERT INTO assets + VALUES ('Thinkpad Laptop', + COLUMN_CREATE('color', 'black', 'price', 500)); +INSERT INTO assets + VALUES ('Fridge', + COLUMN_CREATE('color', 'white', 'warranty', '5 years')); +INSERT INTO assets + VALUES ('Microwave', + COLUMN_CREATE('warranty', '3 years')); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color + FROM assets ORDER BY item_name; +UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color') + WHERE item_name='Fridge'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color + FROM assets ORDER BY item_name; +DELETE FROM assets + WHERE item_name in + (select b.item_name from assets b + where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color + FROM assets ORDER BY item_name; +DELETE FROM assets WHERE item_name='Microwave'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color + FROM assets ORDER BY item_name; +drop table assets ; + + +--echo # +--echo # Test on fulltext columns +--echo # +CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)); +INSERT INTO ft2(copy) VALUES + ('MySQL vs MariaDB database'), + ('Oracle vs MariaDB database'), + ('PostgreSQL vs MariaDB database'), + ('MariaDB overview'), + ('Foreign keys'), + ('Primary keys'), + ('Indexes'), + ('Transactions'), + ('Triggers'); + +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +drop table ft2; + diff --git a/mysql-test/include/delete_use_source_cases.inc b/mysql-test/include/delete_use_source_cases.inc new file mode 100644 index 0000000..24408b7 --- /dev/null +++ b/mysql-test/include/delete_use_source_cases.inc @@ -0,0 +1,214 @@ +--echo # +--echo # Delete with value from subquery on the same table +--echo # + +analyze table t1 persistent for all; + +let $c = c1=(select a.c3 from t1 a where a.c3 = t1.c3); +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with EXISTS subquery over the updated table +--echo # in WHERE + possibly sargable condition +--echo # + +analyze table t1 persistent for all; + +let $c = c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +eval analyze $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with IN predicand over the updated table in WHERE +--echo # +let $c = c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with a limit - can be deleted +--echo # +let $c = c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +eval analyze $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with a limit and an order by +--echo # + +let $c = c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete: 2 execution of PS +--echo # + +prepare create_tmp_stmt from + "create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from + "delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +--sorted_result +select * from t1; + +prepare insert_tmp_stmt from + "insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +--sorted_result +select * from t1; + +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +--sorted_result +select * from t1; + +drop table tmp; + +--echo # +--echo # Delete in stored procedure +--echo # + +delimiter //; +create procedure sp() +begin + delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +end +// +delimiter ;// + +create table tmp as select * from t1 + where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 + where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 + where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +CALL sp; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; + +--echo # +--echo # Delete in stored function +--echo # +delimiter //; +create function f1(IN a INT) returns int +begin + delete from t1 where c3 < a order by c3 limit 1; + return 1; +end;// +delimiter ;// + +set @a:=7; +create table tmp as select * from t1 where c3 < @a + order by c3 limit 1; +select f1(@a); +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a + order by c3 limit 1; +select f1(@a); +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; + +--echo # +--echo # Delete in trigger +--echo # + +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); + +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); + +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW + UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW + DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); + +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +--enable_info ONCE +DELETE FROM t1 WHERE c2>=3; + +--sorted_result +select * from t1; +--sorted_result +SELECT * FROM t2; +SELECT * FROM cnt; + +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; + +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; + +--echo # +--echo # Delete with a reference to view in subquery +--echo # +let $c = t1.c2 in ( select max(a.c2) from v1 a + where a.c1 = t1.c1); +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +eval analyze $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + diff --git a/mysql-test/include/delete_use_source_cases_memory.inc b/mysql-test/include/delete_use_source_cases_memory.inc new file mode 100644 index 0000000..7a61b59 --- /dev/null +++ b/mysql-test/include/delete_use_source_cases_memory.inc @@ -0,0 +1,294 @@ +--echo # +--echo # Delete with value from subquery on the same table +--echo # + +analyze table t1 persistent for all; + +let $c = c1=(select a.c3 from t1 a where a.c3 = t1.c3); +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with EXISTS subquery over the updated table +--echo # in WHERE + possibly sargable condition +--echo # + +analyze table t1 persistent for all; + +let $c = c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with EXISTS subquery over the updated table +--echo # in WHERE + non-sargable condition +--echo # + +analyze table t1 persistent for all; + +let $c = exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with order by +--echo # + +analyze table t1 persistent for all; + +let $c = exists (select 'X' from t1 a where a.c2 = t1.c2) + and c2 >= 3 order by c2; +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with IN predicand over the updated table in WHERE +--echo # +let $c = c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with a limit - can be deleted +--echo # +let $c = c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with a limit and an order by +--echo # + +let $c = c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete: 2 execution of PS +--echo # + +prepare create_tmp_stmt from + "create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from + "delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +--sorted_result +select * from t1; + +prepare insert_tmp_stmt from + "insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +--sorted_result +select * from t1; + +drop table tmp; + +--echo # +--echo # Delete in stored procedure +--echo # + +delimiter //; +create procedure sp() +begin + delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +end +// +delimiter ;// + +create table tmp as select * from t1 + where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 + where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 + where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 1; +CALL sp; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; + +--echo # +--echo # Delete in stored function +--echo # +delimiter //; +create function f1(IN a INT) returns int +begin + delete from t1 where c3 < a order by c3 limit 1; + return 1; +end;// +delimiter ;// + +set @a:=7; +create table tmp as select * from t1 where c3 < @a + order by c3 limit 1; +select f1(@a); +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a + order by c3 limit 1; +select f1(@a); +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; + +--echo # +--echo # Delete in trigger +--echo # + +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); + +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); + +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW + UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW + DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); + +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +--enable_info ONCE +DELETE FROM t1 WHERE c2>=3; + +--sorted_result +select * from t1; +--sorted_result +SELECT * FROM t2; +SELECT * FROM cnt; + +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; + +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; + +--echo # +--echo Delete with a reference to view in subquery +--echo # +let $c = t1.c2 in ( select max(a.c2) from v1 a + where a.c1 = t1.c1); +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete from view +--echo # + +analyze table t1 persistent for all; + +let $c = v1.c1 in + (select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +eval create table tmp as select * from v1 where $c; +let $q = delete from v1 where $c; +eval explain select * from v1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete from view using reference +--echo # to the same view in subquery +--echo # + +analyze table t1 persistent for all; + +let $c = v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) + and c1 = 2 + and exists (select 'X' from v1 a where a.c1 = v1.c1); +eval create table tmp as select * from v1 where $c; +let $q = delete from v1 where $c; +eval explain select * from v1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + diff --git a/mysql-test/include/delete_use_source_cases_non_innodb.inc b/mysql-test/include/delete_use_source_cases_non_innodb.inc new file mode 100644 index 0000000..caa5817 --- /dev/null +++ b/mysql-test/include/delete_use_source_cases_non_innodb.inc @@ -0,0 +1,81 @@ +--echo # +--echo # Delete with EXISTS subquery over the updated table +--echo # in WHERE + non-sargable condition +--echo # + +analyze table t1 persistent for all; + +let $c = exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete with order by +--echo # + +analyze table t1 persistent for all; + +let $c = exists (select 'X' from t1 a where a.c2 = t1.c2) + and c2 >= 3 order by c2; +eval create table tmp as select * from t1 where $c; +let $q = delete from t1 where $c; +--replace_column 9 # +eval explain select * from t1 where $c; +--replace_column 9 # +eval explain $q; +--replace_column 9 # +eval analyze $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete from view +--echo # + +analyze table t1 persistent for all; + +let $c = v1.c1 in + (select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +eval create table tmp as select * from v1 where $c; +let $q = delete from v1 where $c; +eval explain select * from v1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; + +--echo # +--echo # Delete from view using reference +--echo # to the same view in subquery +--echo # + +analyze table t1 persistent for all; + +let $c = v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) + and c1 = 2 + and exists (select 'X' from v1 a where a.c1 = v1.c1); +eval create table tmp as select * from v1 where $c; +let $q = delete from v1 where $c; +--replace_column 9 # +eval explain select * from v1 where $c; +--replace_column 9 # +eval explain $q; +--replace_column 9 # +eval analyze $q; +--sorted_result +select * from t1; +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; diff --git a/mysql-test/include/delete_use_source_innodb.inc b/mysql-test/include/delete_use_source_innodb.inc new file mode 100644 index 0000000..83915d4 --- /dev/null +++ b/mysql-test/include/delete_use_source_innodb.inc @@ -0,0 +1,91 @@ +create table t1 (c1 integer, c2 integer, c3 integer); + +insert into t1(c1,c2,c3) + values (1,1,1),(1,2,2),(1,3,3), + (2,1,4),(2,2,5),(2,3,6), + (2,4,7),(2,5,8); +insert into t1 select c1+10,c2,c3+10 from t1; +insert into t1 select c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; + +create view v1 as select * from t1 where c2=2; + +--echo ####################################### +--echo # Test without any index # +--echo ####################################### +--source include/delete_use_source_cases.inc + +--echo ####################################### +--echo # Test with an index # +--echo ####################################### +create index t1_c2 on t1 (c2,c1); +--source include/delete_use_source_cases.inc + +--echo ####################################### +--echo # Test with a primary key # +--echo ####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +--source include/delete_use_source_cases.inc + +drop view v1; +drop table t1; + +--echo # +--echo # Test on dynamic columns (blob) +--echo # +create table assets ( + item_name varchar(32) primary key, -- A common attribute for all items + dynamic_cols blob -- Dynamic columns will be stored here +); + +INSERT INTO assets + VALUES ('MariaDB T-shirt', + COLUMN_CREATE('color', 'blue', 'size', 'XL')); +INSERT INTO assets + VALUES ('Thinkpad Laptop', + COLUMN_CREATE('color', 'black', 'price', 500)); +INSERT INTO assets + VALUES ('Fridge', + COLUMN_CREATE('color', 'white', 'warranty', '5 years')); +INSERT INTO assets + VALUES ('Microwave', + COLUMN_CREATE('warranty', '3 years')); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color + FROM assets ORDER BY item_name; +UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color') + WHERE item_name='Fridge'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color + FROM assets ORDER BY item_name; +DELETE FROM assets + WHERE item_name in + (select b.item_name from assets b + where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color + FROM assets ORDER BY item_name; +DELETE FROM assets WHERE item_name='Microwave'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color + FROM assets ORDER BY item_name; +drop table assets ; + + +--echo # +--echo # Test on fulltext columns +--echo # +CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)); +INSERT INTO ft2(copy) VALUES + ('MySQL vs MariaDB database'), + ('Oracle vs MariaDB database'), + ('PostgreSQL vs MariaDB database'), + ('MariaDB overview'), + ('Foreign keys'), + ('Primary keys'), + ('Indexes'), + ('Transactions'), + ('Triggers'); + +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +drop table ft2; + diff --git a/mysql-test/include/delete_use_source_memory.inc b/mysql-test/include/delete_use_source_memory.inc new file mode 100644 index 0000000..dbaae1a --- /dev/null +++ b/mysql-test/include/delete_use_source_memory.inc @@ -0,0 +1,33 @@ +create table t1 (c1 integer, c2 integer, c3 integer); + +insert into t1(c1,c2,c3) + values (1,1,1),(1,2,2),(1,3,3), + (2,1,4),(2,2,5),(2,3,6), + (2,4,7),(2,5,8); +insert into t1 select c1+10,c2,c3+10 from t1; +insert into t1 select c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; + +create view v1 as select * from t1 where c2=2; + +--echo ####################################### +--echo # Test without any index # +--echo ####################################### +--source include/delete_use_source_cases_memory.inc + +--echo ####################################### +--echo # Test with an index # +--echo ####################################### +create index t1_c2 on t1 (c2,c1); +--source include/delete_use_source_cases_memory.inc + +--echo ####################################### +--echo # Test with a primary key # +--echo ####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +--source include/delete_use_source_cases_memory.inc + +drop view v1; +drop table t1; + diff --git a/mysql-test/include/update_use_source.inc b/mysql-test/include/update_use_source.inc index 3c48770..e1b66d2 100644 --- a/mysql-test/include/update_use_source.inc +++ b/mysql-test/include/update_use_source.inc @@ -1,150 +1,188 @@ # Include to test update with same table as source and target ---echo # ---echo # Update a with value from subquery on the same table, no search clause. ALL access ---echo # - -#Enable view protocol after fix MDEV-29207 ---disable_view_protocol -start transaction; +create table t1 (old_c1 integer, + old_c2 integer, + c1 integer, + c2 integer, + c3 integer); + +create view v1 as select * from t1 where c2=2; +delimiter /; +create trigger trg_t1 before update on t1 for each row +begin + set new.old_c1=old.c1; + set new.old_c2=old.c2; +end; +/ +delimiter ;/ + +insert into t1(c1,c2,c3) + values (1,1,1), (1,2,2), (1,3,3), + (2,1,4), (2,2,5), (2,3,6), + (2,4,7), (2,5,8); +insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1; +insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; + +create table tmp as select * from t1; + +--echo ####################################### +--echo # Test without any index # +--echo ####################################### +--source include/update_use_source_cases.inc + +--echo ####################################### +--echo # Test with an index # +--echo ####################################### +create index t1_c2 on t1 (c2,c1); +analyze table t1; +--source include/update_use_source_cases.inc + +--echo ####################################### +--echo # Test with a primary key # +--echo ####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +analyze table t1; +--source include/update_use_source_cases.inc + +--echo # Update with error "Subquery returns more than 1 row" +--error ER_SUBQUERY_NO_1_ROW +update t1 set c2=(select c2 from t1); +--sorted_result +select c1,c2,c3 from t1; + +--echo # Update with error "Subquery returns more than 1 row" +--echo # and order by +--error ER_SUBQUERY_NO_1_ROW +update t1 set c2=(select c2 from t1) order by c3; +--sorted_result +select c1,c2,c3 from t1; + +-- echo # Duplicate value on update a primary key +--error ER_DUP_ENTRY + +update t1 set c3=0 + where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; + +-- echo # Duplicate value on update a primary key with ignore --enable_info ONCE -update t1 - set c1=(select a.c3 - from t1 a - where a.c3 = t1.c3); -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; -rollback; - ---echo # ---echo # Update with search clause on the same table ---echo # - -start transaction; +update ignore t1 set c3=0 + where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; + +-- echo # Duplicate value on update a primary key and limit +--error ER_DUP_ENTRY +update t1 set c3=0 + where exists (select 'X' from t1 a where a.c2 = t1.c2) + and c2 >= 3 limit 2; +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; + +-- echo # Duplicate value on update a primary key with ignore +-- echo # and limit --enable_info ONCE -update t1 - set c1=10 - where c1 <2 - and exists (select 'X' - from t1 a - where a.c1 = t1.c1); -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; -rollback; - ---echo # ---echo # Update via RANGE or INDEX access if an index or a primary key exists ---echo # - -explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3; -start transaction; +update ignore t1 set c3=0 + where exists (select 'X' from t1 a where a.c2 = t1.c2) + and c2 >= 3 limit 2; +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # Update no rows found --enable_info ONCE -update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; -rollback; - ---echo # ---echo # Update with order by ---echo # - -start transaction; -update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; -rollback; - ---echo # ---echo Update using a view in subquery ---echo # - -start transaction; +update t1 set c1=10 + where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10); +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # Update no rows changed +drop trigger trg_t1; --enable_info ONCE -update t1 - set c1=c1 +(select max(a.c2) - from v1 a - where a.c1 = t1.c1) ; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; -rollback; +update t1 set c1=c1 + where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1); +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; --echo # ---echo # Update throw a view +--echo # Check call of after trigger --echo # -start transaction; ---enable_info ONCE -update v1 - set c1=c1 + (select max(a.c2) - from t1 a - where a.c1 = v1.c1) +10 -where c3 > 3; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; -rollback; - ---echo # ---echo # Update through a view and using the view in subquery ---echo # +delimiter /; +create or replace trigger trg_t2 after update on t1 for each row +begin + declare msg varchar(100); + if (new.c3 = 5) then + set msg=concat('in after update trigger on ',new.c3); + SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg; + end if; +end; +/ +delimiter ;/ +--error 1644 -start transaction; ---enable_info ONCE -update v1 - set c1=c1 + 1 - where c1 <2 - and exists (select 'X' - from v1 a - where a.c1 = v1.c1); -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; -rollback; +update t1 set c1=2 + where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1); +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; --echo # ---echo # Update through a view and using the view in subquery +--echo # Check update with order by and after trigger --echo # -start transaction; ---enable_info ONCE -update v1 - set c1=(select max(a.c1)+10 - from v1 a - where a.c1 = v1.c1) - where c1 <10 - and exists (select 'X' - from v1 a - where a.c2 = v1.c2); -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; -rollback; +--error 1644 +update t1 set c1=2 + where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1) + order by t1.c2, t1.c1; +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; + +drop view v1; --echo # ---echo # Update of the index or primary key (c3) +--echo # Check update on view with check option --echo # -start transaction; -explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); ---enable_info ONCE -update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); -select c3 from t1; -rollback; +create view v1 as select * from t1 where c2=2 with check option; ---echo # ---echo # update with a limit ---echo # +-- error 1369 +update v1 set c2=3 where c1=1; +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; -start transaction; ---enable_info ONCE -update t1 - set c1=(select a.c3 - from t1 a - where a.c3 = t1.c3) - limit 2; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; -rollback; +-- error 1369 +update v1 set c2=(select max(c3) from v1) where c1=1; +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; ---echo # ---echo # update with a limit and an order by ---echo # +update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1; +--sorted_result +select c1,c2,c3 from t1; +truncate table t1; +insert into t1 select * from tmp; -start transaction; ---enable_info ONCE -update t1 - set c1=(select a.c3 - from t1 a - where a.c3 = t1.c3) - order by c3 desc limit 2; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; -rollback; ---enable_view_protocol +drop table tmp; +drop view v1; +drop table t1; diff --git a/mysql-test/include/update_use_source_cases.inc b/mysql-test/include/update_use_source_cases.inc new file mode 100644 index 0000000..f1025f7 --- /dev/null +++ b/mysql-test/include/update_use_source_cases.inc @@ -0,0 +1,183 @@ +--echo # +--echo # Update with value from subquery on the same table +--echo # + +analyze table t1 persistent for all; +let $q = update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +eval explain select * from t1; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update with EXISTS subquery over the updated table +--echo # in WHERE + possibly sargable condition +--echo # + +analyze table t1 persistent for all; +let $c = c1 <2 + and exists (select 'X' from t1 a where a.c1 = t1.c1); +let $q = update t1 set c1=10 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update with EXISTS subquery over the updated table +--echo # in WHERE + non-sargable condition +--echo # + +analyze table t1 persistent for all; +let $c = exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +let $q = update t1 set c1=c1+10 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update with order by +--echo # + +analyze table t1 persistent for all; +let $c = exists (select 'X' from t1 a where a.c2 = t1.c2) + and c2 >= 3 order by c2; +let $q = update t1 set c1=c1+10 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update with a reference to view in subquery +--echo # in settable value +--echo # + +analyze table t1 persistent for all; +let $q = update t1 set c1=c1 +(select max(a.c2) from v1 a + where a.c1 = t1.c1); +eval explain select * from t1; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update view +--echo # + +analyze table t1 persistent for all; +let $q = update v1 set c1=c1 + (select max(a.c2) from t1 a + where a.c1 = v1.c1) +10 where c3 > 3; +eval explain select * from v1; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update view with reference to the same view in subquery +--echo # + +analyze table t1 persistent for all; +let $c = c1 <2 + and exists (select 'X' from v1 a where a.c1 = v1.c1); +let $q = update v1 set c1=c1 + 1 where $c; +eval explain select * from v1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update view with EXISTS and reference to the same view in subquery +--echo # + +analyze table t1 persistent for all; +let $c = c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +let $q = update v1 + set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) + where $c; +eval explain select * from v1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update with IN predicand over the updated table in WHERE +--echo # + +analyze table t1 persistent for all; +let $c = c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +let $q = update t1 set c3=c3+110 where $c; +eval explain select * from t1 where $c; +eval explain $q; +--enable_info ONCE +eval $q; +--sorted_result +select c3 from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update with a limit +--echo # + +analyze table t1 persistent for all; +let $q = update t1 + set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +eval explain select * from t1 limit 2; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; + +--echo # +--echo # Update with a limit and an order by +--echo # + +analyze table t1 persistent for all; +let $q=update t1 + set c1=(select a.c3 from t1 a where a.c3 = t1.c3) + order by c3 desc limit 2; +eval explain select * from t1 order by c3 desc limit 2; +eval explain $q; +--enable_info ONCE +eval $q; +select concat(old_c1,'->',c1),c3, + case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +truncate table t1; +insert into t1 select * from tmp; diff --git a/mysql-test/include/update_use_source_ext.inc b/mysql-test/include/update_use_source_ext.inc new file mode 100644 index 0000000..004f7a9 --- /dev/null +++ b/mysql-test/include/update_use_source_ext.inc @@ -0,0 +1,59 @@ +--echo # +--echo # Test on dynamic columns (blob) +--echo # + +create table assets ( + item_name varchar(32) primary key, -- A common attribute for all items + dynamic_cols blob -- Dynamic columns will be stored here +); +INSERT INTO assets VALUES ('MariaDB T-shirt', + COLUMN_CREATE('color', 'blue', 'size', 'XL')); +INSERT INTO assets VALUES ('Thinkpad Laptop', + COLUMN_CREATE('color', 'black', 'price', 500)); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color + FROM assets; +UPDATE assets + SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years') + WHERE item_name='Thinkpad Laptop'; +SELECT item_name, + COLUMN_GET(dynamic_cols, 'warranty' as char) AS color + FROM assets; +UPDATE assets + SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years') + WHERE item_name in + (select b.item_name from assets b + where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); +SELECT item_name, + COLUMN_GET(dynamic_cols, 'warranty' as char) AS color + FROM assets; + +UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', + (select COLUMN_GET(b.dynamic_cols, 'color' as char) + from assets b + where assets.item_name = item_name)); +SELECT item_name, + COLUMN_GET(dynamic_cols, 'warranty' as char) AS color + FROM assets; +drop table assets; + +--echo # +--echo # Test on fulltext columns +--echo # +CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)); +INSERT INTO ft2(copy) VALUES + ('MySQL vs MariaDB database'), + ('Oracle vs MariaDB database'), + ('PostgreSQL vs MariaDB database'), + ('MariaDB overview'), + ('Foreign keys'), + ('Primary keys'), + ('Indexes'), + ('Transactions'), + ('Triggers'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); + +update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5))) + from ft2 b WHERE MATCH(b.copy) AGAINST('database')) + where MATCH(copy) AGAINST('keys'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword'); +drop table ft2; diff --git a/mysql-test/main/delete_single_to_multi.result b/mysql-test/main/delete_single_to_multi.result index eba4ca8..57cc224 100644 --- a/mysql-test/main/delete_single_to_multi.result +++ b/mysql-test/main/delete_single_to_multi.result @@ -3419,4 +3419,834 @@ o_orderkey o_totalprice 4903 34363.63 5607 24660.06 drop table t; +CREATE TABLE partsupp_small ( +ps_partkey int(11) NOT NULL DEFAULT '0', +ps_suppkey int(11) NOT NULL DEFAULT '0', +ps_availqty int(11) DEFAULT NULL, +ps_supplycost double DEFAULT NULL, +ps_comment varchar(199) DEFAULT NULL, +PRIMARY KEY (ps_partkey,ps_suppkey), +KEY i_ps_partkey (ps_partkey), +KEY i_ps_suppkey (ps_suppkey) +); +create index i_ps_sup_part on partsupp_small(ps_suppkey, ps_partkey); +insert into partsupp_small select * from partsupp where ps_partkey <50; +analyze table partsupp_small persistent for all; +Table Op Msg_type Msg_text +dbt3_s001.partsupp_small analyze status Engine-independent statistics collected +dbt3_s001.partsupp_small analyze status OK +# LooseScan +# ========= +explain +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY partsupp_small index PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part PRIMARY 8 NULL 176 Using where; Using index; LooseScan +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index +explain format=json +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 0.222764041, + "nested_loop": [ + { + "table": { + "table_name": "partsupp_small", + "access_type": "index", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "PRIMARY", + "key_length": "8", + "used_key_parts": ["ps_partkey", "ps_suppkey"], + "loops": 1, + "rows": 176, + "cost": 0.019403477, + "filtered": 23.86363602, + "attached_condition": "partsupp_small.ps_suppkey in (1,2,3)", + "using_index": true, + "loose_scan": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 42, + "rows": 30, + "cost": 0.203360564, + "filtered": 2.380952358, + "using_index": true + } + } + ] + } +} +explain +select l_partkey from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY partsupp_small index PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part PRIMARY 8 NULL 176 Using where; Using index; LooseScan +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index +explain format=json +select l_partkey from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 0.222764041, + "nested_loop": [ + { + "table": { + "table_name": "partsupp_small", + "access_type": "index", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "PRIMARY", + "key_length": "8", + "used_key_parts": ["ps_partkey", "ps_suppkey"], + "loops": 1, + "rows": 176, + "cost": 0.019403477, + "filtered": 23.86363602, + "attached_condition": "partsupp_small.ps_suppkey in (1,2,3)", + "using_index": true, + "loose_scan": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 42, + "rows": 30, + "cost": 0.203360564, + "filtered": 2.380952358, + "using_index": true + } + } + ] + } +} +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +1175 +create table t as +select * from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +explain +delete from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY partsupp_small index PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part PRIMARY 8 NULL 176 Using where; Using index; LooseScan +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 +explain format=json +delete from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 0.222764041, + "nested_loop": [ + { + "table": { + "table_name": "partsupp_small", + "access_type": "index", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "PRIMARY", + "key_length": "8", + "used_key_parts": ["ps_partkey", "ps_suppkey"], + "loops": 1, + "rows": 176, + "cost": 0.019403477, + "filtered": 23.86363602, + "attached_condition": "partsupp_small.ps_suppkey in (1,2,3)", + "using_index": true, + "loose_scan": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 42, + "rows": 30, + "cost": 0.203360564, + "filtered": 2.380952358 + } + } + ] + } +} +delete from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +0 +insert into lineitem select * from t; +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +1175 +drop table t; +# LooseScan PS +# ============ +prepare stmt from " +delete from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +"; +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +1175 +create table t as +select * from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +execute stmt; +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +0 +insert into lineitem select * from t; +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +1175 +create table r as +select * from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +execute stmt; +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +0 +insert into lineitem select * from r; +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +1175 +drop tables r, t; +deallocate prepare stmt; +# LooseScan SP +# ============ +create procedure p() +delete from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +1175 +create table t as +select * from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +call p(); +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +0 +insert into lineitem select * from t; +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +1175 +create table r as +select * from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +call p(); +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +0 +insert into lineitem select * from r; +select count(*) from lineitem where l_partkey in +(select ps_partkey from partsupp_small +where ps_suppkey in (1,2,3)); +count(*) +1175 +drop tables r, t; +drop procedure p; +# DuplicateWeedout +# ================ +set @tmp_optimizer_switch= @@optimizer_switch; +set optimizer_switch='materialization=off'; +analyze table lineitem; +Table Op Msg_type Msg_text +dbt3_s001.lineitem analyze status Engine-independent statistics collected +dbt3_s001.lineitem analyze status OK +analyze table orders; +Table Op Msg_type Msg_text +dbt3_s001.orders analyze status Engine-independent statistics collected +dbt3_s001.orders analyze status OK +explain +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary +1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary +explain format=json +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 4.129940741, + "nested_loop": [ + { + "duplicates_removal": [ + { + "table": { + "table_name": "supplier", + "access_type": "range", + "possible_keys": ["PRIMARY"], + "key": "PRIMARY", + "key_length": "4", + "used_key_parts": ["s_suppkey"], + "loops": 1, + "rows": 1, + "cost": 0.001478954, + "filtered": 100, + "attached_condition": "supplier.s_suppkey < 2", + "using_index": true + } + }, + { + "table": { + "table_name": "partsupp_small", + "access_type": "ref", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "i_ps_sup_part", + "key_length": "4", + "used_key_parts": ["ps_suppkey"], + "ref": ["dbt3_s001.supplier.s_suppkey"], + "loops": 1, + "rows": 17, + "cost": 0.003160332, + "filtered": 79.54545593, + "attached_condition": "partsupp_small.ps_partkey is not null", + "using_index": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_suppkey_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 14, + "rows": 30, + "cost": 0.069152188, + "filtered": 100, + "using_index": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 420.35, + "rows": 30, + "cost": 1.994712365, + "filtered": 0.237896994, + "using_index": true + } + } + ] + } + ] + } +} +explain +select l_partkey from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary +1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary +explain format=json +select l_partkey from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 4.129940741, + "nested_loop": [ + { + "duplicates_removal": [ + { + "table": { + "table_name": "supplier", + "access_type": "range", + "possible_keys": ["PRIMARY"], + "key": "PRIMARY", + "key_length": "4", + "used_key_parts": ["s_suppkey"], + "loops": 1, + "rows": 1, + "cost": 0.001478954, + "filtered": 100, + "attached_condition": "supplier.s_suppkey < 2", + "using_index": true + } + }, + { + "table": { + "table_name": "partsupp_small", + "access_type": "ref", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "i_ps_sup_part", + "key_length": "4", + "used_key_parts": ["ps_suppkey"], + "ref": ["dbt3_s001.supplier.s_suppkey"], + "loops": 1, + "rows": 17, + "cost": 0.003160332, + "filtered": 79.54545593, + "attached_condition": "partsupp_small.ps_partkey is not null", + "using_index": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_suppkey_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 14, + "rows": 30, + "cost": 0.069152188, + "filtered": 100, + "using_index": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 420.35, + "rows": 30, + "cost": 1.994712365, + "filtered": 0.237896994, + "using_index": true + } + } + ] + } + ] + } +} +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +471 +create table t as +select * from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +explain +delete from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary +1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary +explain format=json +delete from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 4.129940741, + "nested_loop": [ + { + "duplicates_removal": [ + { + "table": { + "table_name": "supplier", + "access_type": "range", + "possible_keys": ["PRIMARY"], + "key": "PRIMARY", + "key_length": "4", + "used_key_parts": ["s_suppkey"], + "loops": 1, + "rows": 1, + "cost": 0.001478954, + "filtered": 100, + "attached_condition": "supplier.s_suppkey < 2", + "using_index": true + } + }, + { + "table": { + "table_name": "partsupp_small", + "access_type": "ref", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "i_ps_sup_part", + "key_length": "4", + "used_key_parts": ["ps_suppkey"], + "ref": ["dbt3_s001.supplier.s_suppkey"], + "loops": 1, + "rows": 17, + "cost": 0.003160332, + "filtered": 79.54545593, + "attached_condition": "partsupp_small.ps_partkey is not null", + "using_index": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_suppkey_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 14, + "rows": 30, + "cost": 0.069152188, + "filtered": 100 + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 420.35, + "rows": 30, + "cost": 1.994712365, + "filtered": 0.237896994, + "using_index": true + } + } + ] + } + ] + } +} +delete from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +0 +insert into lineitem select * from t; +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +471 +drop table t; +# DuplicateWeedout PS +# =================== +prepare stmt from " +delete from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +"; +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +471 +create table t as +select * from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +execute stmt; +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +0 +insert into lineitem select * from t; +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +471 +create table r as +select * from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +execute stmt; +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +0 +insert into lineitem select * from r; +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +471 +drop tables r, t; +deallocate prepare stmt; +# DuplicateWeedout SP +# =================== +create procedure p() +delete from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +471 +create table t as +select * from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +call p(); +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +0 +insert into lineitem select * from t; +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +471 +create table r as +select * from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +call p(); +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +0 +insert into lineitem select * from r; +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +471 +drop tables r, t; +drop procedure p; +set @@optimizer_switch=@tmp_optimizer_switch; +drop table partsupp_small; DROP DATABASE dbt3_s001; diff --git a/mysql-test/main/delete_single_to_multi.test b/mysql-test/main/delete_single_to_multi.test index 2829ae1..31f1d15 100644 --- a/mysql-test/main/delete_single_to_multi.test +++ b/mysql-test/main/delete_single_to_multi.test @@ -822,4 +822,248 @@ eval select o_orderkey, o_totalprice from orders where $c11; drop table t; + +CREATE TABLE partsupp_small ( + ps_partkey int(11) NOT NULL DEFAULT '0', + ps_suppkey int(11) NOT NULL DEFAULT '0', + ps_availqty int(11) DEFAULT NULL, + ps_supplycost double DEFAULT NULL, + ps_comment varchar(199) DEFAULT NULL, + PRIMARY KEY (ps_partkey,ps_suppkey), + KEY i_ps_partkey (ps_partkey), + KEY i_ps_suppkey (ps_suppkey) +); + +create index i_ps_sup_part on partsupp_small(ps_suppkey, ps_partkey); +insert into partsupp_small select * from partsupp where ps_partkey <50; +analyze table partsupp_small persistent for all; + +--echo # LooseScan +--echo # ========= + +let $c12 = l_partkey in + (select ps_partkey from partsupp_small + where ps_suppkey in (1,2,3)); + +eval +explain +select count(*) from lineitem where $c12; +eval +explain format=json +select count(*) from lineitem where $c12; +eval +explain +select l_partkey from lineitem where $c12; +eval +explain format=json +select l_partkey from lineitem where $c12; +eval +select count(*) from lineitem where $c12; +eval +create table t as +select * from lineitem where $c12; + +eval +explain +delete from lineitem where $c12; +eval +explain format=json +delete from lineitem where $c12; +eval +delete from lineitem where $c12; +eval +select count(*) from lineitem where $c12; + +insert into lineitem select * from t; +eval +select count(*) from lineitem where $c12; + +drop table t; + +--echo # LooseScan PS +--echo # ============ + +eval +prepare stmt from " +delete from lineitem where $c12; +"; + +eval +select count(*) from lineitem where $c12; +eval +create table t as +select * from lineitem where $c12; +execute stmt; +eval +select count(*) from lineitem where $c12; +insert into lineitem select * from t; +eval +select count(*) from lineitem where $c12; + +eval +create table r as +select * from lineitem where $c12; +execute stmt; +eval +select count(*) from lineitem where $c12; +insert into lineitem select * from r; +eval +select count(*) from lineitem where $c12; + +drop tables r, t; +deallocate prepare stmt; + +--echo # LooseScan SP +--echo # ============ + +eval +create procedure p() +delete from lineitem where $c12; + +eval +select count(*) from lineitem where $c12; +eval +create table t as +select * from lineitem where $c12; +call p(); +eval +select count(*) from lineitem where $c12; +insert into lineitem select * from t; +eval +select count(*) from lineitem where $c12; + +eval +create table r as +select * from lineitem where $c12; +call p(); +eval +select count(*) from lineitem where $c12; +insert into lineitem select * from r; +eval +select count(*) from lineitem where $c12; + +drop tables r, t; +drop procedure p; + +--echo # DuplicateWeedout +--echo # ================ + +set @tmp_optimizer_switch= @@optimizer_switch; +set optimizer_switch='materialization=off'; + +analyze table lineitem; +analyze table orders; + +let $c13 = l_partkey in ( + select ps_partkey + from partsupp_small join lineitem on ps_partkey=l_partkey + where ps_suppkey in ( + select s_suppkey from supplier where s_suppkey < 2 + ) +); + +eval +explain +select count(*) from lineitem where $c13; +eval +explain format=json +select count(*) from lineitem where $c13; +eval +explain +select l_partkey from lineitem where $c13; +eval +explain format=json +select l_partkey from lineitem where $c13; +eval +select count(*) from lineitem where $c13; +eval +create table t as +select * from lineitem where $c13; + +eval +explain +delete from lineitem where $c13; +eval +explain format=json +delete from lineitem where $c13; +eval +delete from lineitem where $c13; +eval +select count(*) from lineitem where $c13; + +insert into lineitem select * from t; +eval +select count(*) from lineitem where $c13; + +drop table t; + +--echo # DuplicateWeedout PS +--echo # =================== + +eval +prepare stmt from " +delete from lineitem where $c13; +"; + +eval +select count(*) from lineitem where $c13; +eval +create table t as +select * from lineitem where $c13; +execute stmt; +eval +select count(*) from lineitem where $c13; +insert into lineitem select * from t; +eval +select count(*) from lineitem where $c13; + +eval +create table r as +select * from lineitem where $c13; +execute stmt; +eval +select count(*) from lineitem where $c13; +insert into lineitem select * from r; +eval +select count(*) from lineitem where $c13; + +drop tables r, t; +deallocate prepare stmt; + +--echo # DuplicateWeedout SP +--echo # =================== + +eval +create procedure p() +delete from lineitem where $c13; + +eval +select count(*) from lineitem where $c13; +eval +create table t as +select * from lineitem where $c13; +call p(); +eval +select count(*) from lineitem where $c13; +insert into lineitem select * from t; +eval +select count(*) from lineitem where $c13; + +eval +create table r as +select * from lineitem where $c13; +call p(); +eval +select count(*) from lineitem where $c13; +insert into lineitem select * from r; +eval +select count(*) from lineitem where $c13; + +drop tables r, t; +drop procedure p; + +set @@optimizer_switch=@tmp_optimizer_switch; + +drop table partsupp_small; + DROP DATABASE dbt3_s001; diff --git a/mysql-test/main/delete_use_source_engines.result b/mysql-test/main/delete_use_source_engines.result new file mode 100644 index 0000000..fd0d3b8 --- /dev/null +++ b/mysql-test/main/delete_use_source_engines.result @@ -0,0 +1,8870 @@ +set @save_default_engine=@@default_storage_engine; +####################################### +# # +# Engine InnoDB # +# # +####################################### +set global innodb_stats_persistent=1; +set default_storage_engine=InnoDB; +create table t1 (c1 integer, c2 integer, c3 integer); +insert into t1(c1,c2,c3) +values (1,1,1),(1,2,2),(1,3,3), +(2,1,4),(2,2,5),(2,3,6), +(2,4,7),(2,5,8); +insert into t1 select c1+10,c2,c3+10 from t1; +insert into t1 select c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create view v1 as select * from t1 where c2=2; +####################################### +# Test without any index # +####################################### +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.00 100.00 5.56 Using where; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 12.50 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 24.50 100.00 1.02 Using where; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +# Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +####################################### +# Test with an index # +####################################### +create index t1_c2 on t1 (c2,c1); +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1) +analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 32.00 9.38 9.38 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 100.00 5.71 Using where; Using index; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1) +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1) +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1) +analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 12.50 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 0.25 18.75 100.00 Using index; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using where; FirstMatch(t1) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +2 DEPENDENT SUBQUERY a index_subquery t1_c2 t1_c2 5 func 5 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +# Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 1.00 100.00 100.00 Using index +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +####################################### +# Test with a primary key # +####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.33 100.00 5.41 Using where; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary +analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 1.00 100.00 100.00 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 1.00 3.12 100.00 Using where; End temporary +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 1 +1 PRIMARY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 1 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +# Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +drop view v1; +drop table t1; +# +# Test on dynamic columns (blob) +# +create table assets ( +item_name varchar(32) primary key, -- A common attribute for all items +dynamic_cols blob -- Dynamic columns will be stored here +); +INSERT INTO assets +VALUES ('MariaDB T-shirt', +COLUMN_CREATE('color', 'blue', 'size', 'XL')); +INSERT INTO assets +VALUES ('Thinkpad Laptop', +COLUMN_CREATE('color', 'black', 'price', 500)); +INSERT INTO assets +VALUES ('Fridge', +COLUMN_CREATE('color', 'white', 'warranty', '5 years')); +INSERT INTO assets +VALUES ('Microwave', +COLUMN_CREATE('warranty', '3 years')); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge white +MariaDB T-shirt blue +Microwave NULL +Thinkpad Laptop black +UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color') +WHERE item_name='Fridge'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge NULL +MariaDB T-shirt blue +Microwave NULL +Thinkpad Laptop black +DELETE FROM assets +WHERE item_name in +(select b.item_name from assets b +where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge NULL +MariaDB T-shirt blue +Microwave NULL +DELETE FROM assets WHERE item_name='Microwave'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge NULL +MariaDB T-shirt blue +drop table assets ; +# +# Test on fulltext columns +# +CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)); +INSERT INTO ft2(copy) VALUES +('MySQL vs MariaDB database'), +('Oracle vs MariaDB database'), +('PostgreSQL vs MariaDB database'), +('MariaDB overview'), +('Foreign keys'), +('Primary keys'), +('Indexes'), +('Transactions'), +('Triggers'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +copy +MySQL vs MariaDB database +Oracle vs MariaDB database +PostgreSQL vs MariaDB database +DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +copy +drop table ft2; +####################################### +# # +# Engine Aria # +# # +####################################### +set default_storage_engine=Aria; +create table t1 (c1 integer, c2 integer, c3 integer); +insert into t1(c1,c2,c3) +values (1,1,1),(1,2,2),(1,3,3), +(2,1,4),(2,2,5),(2,3,6), +(2,4,7),(2,5,8); +insert into t1 select c1+10,c2,c3+10 from t1; +insert into t1 select c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create view v1 as select * from t1 where c2=2; +####################################### +# Test without any index # +####################################### +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.67 100.00 5.26 Using where; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 25.00 100.00 12.00 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 22.67 100.00 1.47 Using where; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +# Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 4 7 +2 5 8 +21 2 21 +21 4 23 +22 2 24 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 4 33 +32 2 34 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # +2 MATERIALIZED a ALL NULL NULL NULL NULL # +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # +2 MATERIALIZED a ALL NULL NULL NULL NULL # +analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 62.50 62.50 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # 1.00 100.00 100.00 +2 MATERIALIZED a ALL NULL NULL NULL NULL # 32.00 62.50 100.00 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +explain select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +affected rows: 0 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view using reference +# to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where +explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where +analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 3.91 3.12 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # 5.00 25.00 20.00 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # 32.00 100.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +####################################### +# Test with an index # +####################################### +create index t1_c2 on t1 (c2,c1); +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1) +analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 32.00 9.38 9.38 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 100.00 5.71 Using where; Using index; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1) +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1) +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1) +analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 27.00 100.00 14.81 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 0.25 18.75 100.00 Using index; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using where; FirstMatch(t1) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +2 DEPENDENT SUBQUERY a index_subquery t1_c2 t1_c2 5 func 5 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +# Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 1.00 100.00 100.00 Using index +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 +1 PRIMARY a ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 +1 PRIMARY a ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1) +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 4 7 +2 5 8 +21 2 21 +21 4 23 +22 2 24 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 4 33 +32 2 34 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 5 NULL # Using index condition +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 # Using index; FirstMatch(t1) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a index t1_c2 t1_c2 10 NULL # Using where; Using index; LooseScan +1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 # +analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY a index t1_c2 t1_c2 10 NULL # 16.00 20.00 25.00 Using where; Using index; LooseScan +1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 # 5.00 4.76 100.00 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +explain select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where +2 DEPENDENT SUBQUERY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index +explain delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where +2 DEPENDENT SUBQUERY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index +delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +affected rows: 0 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view using reference +# to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using where +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using index; FirstMatch(t1) +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where +explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using where +3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func # Using where; Using index +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where +analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # 1.00 100.00 100.00 Using where +3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func # 1.00 100.00 100.00 Using where; Using index +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # 32.00 100.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +####################################### +# Test with a primary key # +####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.00 100.00 5.56 Using where; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary +analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 4.00 100.00 100.00 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 1.00 3.12 25.00 Using where; End temporary +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 1 +1 PRIMARY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 1 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +# Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 4 7 +2 5 8 +21 2 21 +21 4 23 +22 2 24 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 4 33 +32 2 34 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # +2 MATERIALIZED a ALL NULL NULL NULL NULL # +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # +2 MATERIALIZED a ALL NULL NULL NULL NULL # +analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 62.50 62.50 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # 1.00 100.00 100.00 +2 MATERIALIZED a ALL NULL NULL NULL NULL # 32.00 62.50 100.00 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +explain select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +affected rows: 0 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view using reference +# to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 # +explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 # +analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 3.91 3.12 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # 6.00 25.00 16.67 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 # 1.00 100.00 100.00 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +drop view v1; +drop table t1; +# +# Test on dynamic columns (blob) +# +create table assets ( +item_name varchar(32) primary key, -- A common attribute for all items +dynamic_cols blob -- Dynamic columns will be stored here +); +INSERT INTO assets +VALUES ('MariaDB T-shirt', +COLUMN_CREATE('color', 'blue', 'size', 'XL')); +INSERT INTO assets +VALUES ('Thinkpad Laptop', +COLUMN_CREATE('color', 'black', 'price', 500)); +INSERT INTO assets +VALUES ('Fridge', +COLUMN_CREATE('color', 'white', 'warranty', '5 years')); +INSERT INTO assets +VALUES ('Microwave', +COLUMN_CREATE('warranty', '3 years')); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge white +MariaDB T-shirt blue +Microwave NULL +Thinkpad Laptop black +UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color') +WHERE item_name='Fridge'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge NULL +MariaDB T-shirt blue +Microwave NULL +Thinkpad Laptop black +DELETE FROM assets +WHERE item_name in +(select b.item_name from assets b +where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge NULL +MariaDB T-shirt blue +Microwave NULL +DELETE FROM assets WHERE item_name='Microwave'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge NULL +MariaDB T-shirt blue +drop table assets ; +# +# Test on fulltext columns +# +CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)); +INSERT INTO ft2(copy) VALUES +('MySQL vs MariaDB database'), +('Oracle vs MariaDB database'), +('PostgreSQL vs MariaDB database'), +('MariaDB overview'), +('Foreign keys'), +('Primary keys'), +('Indexes'), +('Transactions'), +('Triggers'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +copy +MySQL vs MariaDB database +Oracle vs MariaDB database +PostgreSQL vs MariaDB database +DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +copy +drop table ft2; +####################################### +# # +# Engine MyISAM # +# # +####################################### +set default_storage_engine=MyISAM; +create table t1 (c1 integer, c2 integer, c3 integer); +insert into t1(c1,c2,c3) +values (1,1,1),(1,2,2),(1,3,3), +(2,1,4),(2,2,5),(2,3,6), +(2,4,7),(2,5,8); +insert into t1 select c1+10,c2,c3+10 from t1; +insert into t1 select c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create view v1 as select * from t1 where c2=2; +####################################### +# Test without any index # +####################################### +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 12.67 100.00 5.26 Using where; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 25.00 100.00 12.00 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 22.67 100.00 1.47 Using where; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +# Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 4 7 +2 5 8 +21 2 21 +21 4 23 +22 2 24 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 4 33 +32 2 34 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # +2 MATERIALIZED a ALL NULL NULL NULL NULL # +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # +2 MATERIALIZED a ALL NULL NULL NULL NULL # +analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 62.50 62.50 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # 1.00 100.00 100.00 +2 MATERIALIZED a ALL NULL NULL NULL NULL # 32.00 62.50 100.00 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +explain select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +affected rows: 0 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view using reference +# to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where +explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where +analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 3.91 3.12 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # 5.00 25.00 20.00 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # 32.00 100.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +####################################### +# Test with an index # +####################################### +create index t1_c2 on t1 (c2,c1); +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1) +analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 32.00 9.38 9.38 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 11.67 100.00 5.71 Using where; Using index; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1) +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 1 Using index; FirstMatch(t1) +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using index; FirstMatch(t1) +analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 29.00 100.00 13.79 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 0.25 18.75 100.00 Using index; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c1 5 Using where; FirstMatch(t1) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +2 DEPENDENT SUBQUERY a index_subquery t1_c2 t1_c2 5 func 5 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +# Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 1.00 100.00 100.00 Using index +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 +1 PRIMARY a ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 +1 PRIMARY a ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1) +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 4 7 +2 5 8 +21 2 21 +21 4 23 +22 2 24 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 4 33 +32 2 34 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL # Using where; Using filesort +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 # Using index; FirstMatch(t1) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a index t1_c2 t1_c2 10 NULL # Using where; Using index; LooseScan +1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 # +analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY a index t1_c2 t1_c2 10 NULL # 16.00 20.00 25.00 Using where; Using index; LooseScan +1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 # 5.00 5.00 100.00 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +explain select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where +2 DEPENDENT SUBQUERY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index +explain delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where +2 DEPENDENT SUBQUERY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index +delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +affected rows: 0 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view using reference +# to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using where +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using index; FirstMatch(t1) +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where +explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # Using where +3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func # Using where; Using index +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # Using where +analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const # 1.00 100.00 100.00 Using where +3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func # 1.00 100.00 100.00 Using where; Using index +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL # 32.00 100.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +####################################### +# Test with a primary key # +####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +analyze delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 9.38 9.38 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 13.33 100.00 5.00 Using where; FirstMatch(t1) +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary +analyze delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 4.00 100.00 100.00 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 1.00 3.12 25.00 Using where; End temporary +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 1 +1 PRIMARY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 1 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +# Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +analyze delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 32.00 100.00 25.00 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 32.00 25.00 3.12 Using where +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 4 7 +2 5 8 +21 2 21 +21 4 23 +22 2 24 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 4 33 +32 2 34 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # +2 MATERIALIZED a ALL NULL NULL NULL NULL # +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # +2 MATERIALIZED a ALL NULL NULL NULL NULL # +analyze delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 62.50 62.50 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func # 1.00 100.00 100.00 +2 MATERIALIZED a ALL NULL NULL NULL NULL # 32.00 62.50 100.00 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +explain select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +affected rows: 0 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view using reference +# to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 # +explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 # +analyze delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL # 32.00 3.91 3.12 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL # 3.00 25.00 33.33 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 # 1.00 100.00 100.00 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +drop view v1; +drop table t1; +# +# Test on dynamic columns (blob) +# +create table assets ( +item_name varchar(32) primary key, -- A common attribute for all items +dynamic_cols blob -- Dynamic columns will be stored here +); +INSERT INTO assets +VALUES ('MariaDB T-shirt', +COLUMN_CREATE('color', 'blue', 'size', 'XL')); +INSERT INTO assets +VALUES ('Thinkpad Laptop', +COLUMN_CREATE('color', 'black', 'price', 500)); +INSERT INTO assets +VALUES ('Fridge', +COLUMN_CREATE('color', 'white', 'warranty', '5 years')); +INSERT INTO assets +VALUES ('Microwave', +COLUMN_CREATE('warranty', '3 years')); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge white +MariaDB T-shirt blue +Microwave NULL +Thinkpad Laptop black +UPDATE assets SET dynamic_cols=COLUMN_DELETE(dynamic_cols, 'color') +WHERE item_name='Fridge'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge NULL +MariaDB T-shirt blue +Microwave NULL +Thinkpad Laptop black +DELETE FROM assets +WHERE item_name in +(select b.item_name from assets b +where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge NULL +MariaDB T-shirt blue +Microwave NULL +DELETE FROM assets WHERE item_name='Microwave'; +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets ORDER BY item_name; +item_name color +Fridge NULL +MariaDB T-shirt blue +drop table assets ; +# +# Test on fulltext columns +# +CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)); +INSERT INTO ft2(copy) VALUES +('MySQL vs MariaDB database'), +('Oracle vs MariaDB database'), +('PostgreSQL vs MariaDB database'), +('MariaDB overview'), +('Foreign keys'), +('Primary keys'), +('Indexes'), +('Transactions'), +('Triggers'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +copy +MySQL vs MariaDB database +Oracle vs MariaDB database +PostgreSQL vs MariaDB database +DELETE FROM ft2 WHERE MATCH(copy) AGAINST('database'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +copy +drop table ft2; +####################################### +# # +# Engine MEMORY # +# # +####################################### +set default_storage_engine=MEMORY; +create table t1 (c1 integer, c2 integer, c3 integer); +insert into t1(c1,c2,c3) +values (1,1,1),(1,2,2),(1,3,3), +(2,1,4),(2,2,5),(2,3,6), +(2,4,7),(2,5,8); +insert into t1 select c1+10,c2,c3+10 from t1; +insert into t1 select c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create view v1 as select * from t1 where c2=2; +####################################### +# Test without any index # +####################################### +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +affected rows: 2 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 4 7 +2 5 8 +21 2 21 +21 4 23 +22 2 24 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 4 33 +32 2 34 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +explain select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +affected rows: 0 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view using reference +# to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +####################################### +# Test with an index # +####################################### +create index t1_c2 on t1 (c2,c1); +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +affected rows: 2 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 4 7 +2 5 8 +21 2 21 +21 4 23 +22 2 24 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 4 33 +32 2 34 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32 +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32 +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 2 FirstMatch(t1) +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c3 2 FirstMatch(t1) +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort +1 PRIMARY a ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +2 DEPENDENT SUBQUERY a ALL t1_c2 NULL NULL NULL 32 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2 +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2 +delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +create table tmp as select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +explain select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL t1_c2 NULL NULL NULL 32 Using where +explain delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL t1_c2 NULL NULL NULL 32 Using where +delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +affected rows: 0 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view using reference +# to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const 2 Using where +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const 2 FirstMatch(t1) +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,const 2 Using where +3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 2 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +####################################### +# Test with a primary key # +####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +# +# Delete with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +explain select * from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 +explain delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 +delete from t1 where c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 4 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +explain select * from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where c1 = 1 and exists (select 'X' from t1 a where a.c1 = t1.c2); +affected rows: 2 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 = 3; +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 4 7 +2 5 8 +21 2 21 +21 4 23 +22 2 24 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 4 33 +32 2 34 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +delete from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with IN predicand over the updated table in WHERE +# +create table tmp as select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +explain select * from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary +explain delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c1 1 Using where; End temporary +delete from t1 where c3 in (select distinct a.c1 from t1 a where t1.c2=a.c2); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 3 3 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit - can be deleted +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; Start temporary +1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.a.c2 1 Using where; End temporary +delete from t1 where c1 in (select a.c2 from t1 a where a.c2 = t1.c3) limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete with a limit and an order by +# +create table tmp as select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +explain select * from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 32 Using filesort +1 PRIMARY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where +explain delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using where +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete: 2 execution of PS +# +prepare create_tmp_stmt from +"create table tmp as select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +prepare delete_t1_stmt from +"delete from t1 where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=5; +execute create_tmp_stmt using @a; +execute delete_t1_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 6 38 +prepare insert_tmp_stmt from +"insert into tmp(c1,c2,c3) select * from t1 + where c2=(select a.c3 from t1 a where a.c3 = ?)"; +set @a:=2; +execute insert_tmp_stmt using @a; +execute delete_t1_stmt using @a; +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +2 1 4 +2 3 6 +2 4 7 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +drop table tmp; +# +# Delete in stored procedure +# +create procedure sp() +begin +delete from t1 where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +end +// +create table tmp as select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +insert into tmp(c1,c2,c3) select * from t1 +where c1 in (select a.c2 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 1; +CALL sp; +select * from t1; +c1 c2 c3 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop procedure sp; +drop table tmp; +# +# Delete in stored function +# +create function f1(IN a INT) returns int +begin +delete from t1 where c3 < a order by c3 limit 1; +return 1; +end;// +set @a:=7; +create table tmp as select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +insert into tmp(c1,c2,c3) select * from t1 where c3 < @a +order by c3 limit 1; +select f1(@a); +f1(@a) +1 +select * from t1; +c1 c2 c3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop function f1; +drop table tmp; +# +# Delete in trigger +# +create table t2 (c1 integer); +insert into t2(c1) values (1), (2), (3), (4), (5), (6), (7), (8); +CREATE TABLE cnt(del integer); +INSERT INTO cnt VALUES(0); +CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW +UPDATE cnt SET del=del+1; +CREATE TRIGGER tr2 AFTER DELETE ON t1 FOR EACH ROW +DELETE FROM t2 WHERE c1> (SELECT count(*)-1 FROM t2); +CREATE TABLE tmp as SELECT * FROM t1 WHERE c2>=3; +DELETE FROM t1 WHERE c2>=3; +affected rows: 20 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +11 1 11 +11 2 12 +12 1 14 +12 2 15 +2 1 4 +2 2 5 +21 2 21 +22 2 24 +31 2 31 +32 2 34 +SELECT * FROM t2; +c1 +SELECT * FROM cnt; +del +20 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +DROP TRIGGER tr1; +DROP TRIGGER tr2; +drop table t2, cnt, tmp; +# +Delete with a reference to view in subquery +# +create table tmp as select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +explain select * from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +explain delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +delete from t1 where t1.c2 in ( select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 8 +select * from t1; +c1 c2 c3 +1 1 1 +1 3 3 +11 1 11 +11 3 13 +12 1 14 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 3 22 +21 4 23 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 3 32 +31 4 33 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +explain select * from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +explain delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +delete from v1 where v1.c1 in +(select max(a.c1) from t1 a where a.c2 = v1.c2) and c3 = 5; +affected rows: 0 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +# +# Delete from view using reference +# to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +explain select * from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 +explain delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 +delete from v1 where v1.c2 in (select max(a.c2) from t1 a where a.c3 = v1.c3) +and c1 = 2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +select * from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +insert into t1(c1,c2,c3) select c1,c2,c3 from tmp; +drop table tmp; +drop view v1; +drop table t1; +set @@default_storage_engine=@save_default_engine; +# +# End of 11.0 tests +# diff --git a/mysql-test/main/delete_use_source_engines.test b/mysql-test/main/delete_use_source_engines.test new file mode 100644 index 0000000..1a0d98f --- /dev/null +++ b/mysql-test/main/delete_use_source_engines.test @@ -0,0 +1,42 @@ +--source include/have_innodb.inc + +set @save_default_engine=@@default_storage_engine; + +--echo ####################################### +--echo # # +--echo # Engine InnoDB # +--echo # # +--echo ####################################### +set global innodb_stats_persistent=1; +set default_storage_engine=InnoDB; +--source include/delete_use_source_innodb.inc + +--echo ####################################### +--echo # # +--echo # Engine Aria # +--echo # # +--echo ####################################### +set default_storage_engine=Aria; +--source include/delete_use_source.inc + +--echo ####################################### +--echo # # +--echo # Engine MyISAM # +--echo # # +--echo ####################################### +set default_storage_engine=MyISAM; +--source include/delete_use_source.inc + +--echo ####################################### +--echo # # +--echo # Engine MEMORY # +--echo # # +--echo ####################################### +set default_storage_engine=MEMORY; +--source include/delete_use_source_memory.inc + +set @@default_storage_engine=@save_default_engine; + +--echo # +--echo # End of 11.0 tests +--echo # diff --git a/mysql-test/main/update_single_to_multi.result b/mysql-test/main/update_single_to_multi.result index 11969f7..6792378 100644 --- a/mysql-test/main/update_single_to_multi.result +++ b/mysql-test/main/update_single_to_multi.result @@ -3242,4 +3242,619 @@ o_orderkey o_totalprice 3139 40975.96 4903 34363.63 5607 24660.06 +CREATE TABLE partsupp_small ( +ps_partkey int(11) NOT NULL DEFAULT '0', +ps_suppkey int(11) NOT NULL DEFAULT '0', +ps_availqty int(11) DEFAULT NULL, +ps_supplycost double DEFAULT NULL, +ps_comment varchar(199) DEFAULT NULL, +PRIMARY KEY (ps_partkey,ps_suppkey), +KEY i_ps_partkey (ps_partkey), +KEY i_ps_suppkey (ps_suppkey) +); +create index i_ps_sup_part on partsupp_small(ps_suppkey, ps_partkey); +insert into partsupp_small select * from partsupp where ps_partkey <50; +analyze table partsupp_small persistent for all; +Table Op Msg_type Msg_text +dbt3_s001.partsupp_small analyze status Engine-independent statistics collected +dbt3_s001.partsupp_small analyze status OK +# LooseScan +# ========= +explain +select count(*) from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY partsupp_small index PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 8 NULL 176 Using where; Using index; LooseScan +1 PRIMARY lineitem ref i_l_suppkey i_l_suppkey 5 dbt3_s001.partsupp_small.ps_suppkey 600 Using index +explain format=json +select count(*) from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 0.776623555, + "nested_loop": [ + { + "table": { + "table_name": "partsupp_small", + "access_type": "index", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "i_ps_sup_part", + "key_length": "8", + "used_key_parts": ["ps_suppkey", "ps_partkey"], + "loops": 1, + "rows": 176, + "cost": 0.019403477, + "filtered": 5.113636494, + "attached_condition": "partsupp_small.ps_partkey in (1,2,3)", + "using_index": true, + "loose_scan": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey"], + "key": "i_l_suppkey", + "key_length": "5", + "used_key_parts": ["l_suppkey"], + "ref": ["dbt3_s001.partsupp_small.ps_suppkey"], + "loops": 9, + "rows": 600, + "cost": 0.757220078, + "filtered": 11.11111069, + "using_index": true + } + } + ] + } +} +select count(*) from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +count(*) +5373 +select 5373 as count, 136458704.22 as old_sum; +count old_sum +5373 136458704.22 +explain +update lineitem set l_extendedprice=l_extendedprice+10 where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY lineitem ALL i_l_suppkey NULL NULL NULL 6005 +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED partsupp_small range PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part PRIMARY 4 NULL 9 Using where; Using index +explain format=json +update lineitem set l_extendedprice=l_extendedprice+10 where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 2.191459679, + "nested_loop": [ + { + "table": { + "table_name": "lineitem", + "access_type": "ALL", + "possible_keys": ["i_l_suppkey"], + "loops": 1, + "rows": 6005, + "cost": 0.988432825, + "filtered": 100 + } + }, + { + "table": { + "table_name": "<subquery2>", + "access_type": "eq_ref", + "possible_keys": ["distinct_key"], + "key": "distinct_key", + "key_length": "4", + "used_key_parts": ["ps_suppkey"], + "ref": ["func"], + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 2, + "nested_loop": [ + { + "table": { + "table_name": "partsupp_small", + "access_type": "range", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "PRIMARY", + "key_length": "4", + "used_key_parts": ["ps_partkey"], + "loops": 1, + "rows": 9, + "cost": 0.003756598, + "filtered": 100, + "attached_condition": "partsupp_small.ps_partkey in (1,2,3)", + "using_index": true + } + } + ] + } + } + } + } + ] + } +} +update lineitem set l_extendedprice=l_extendedprice+10 where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +select ROUND(sum(l_extendedprice),2), 5373 as count, +(136458704.22+10*5373) as 'old_sum+10*count' + from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +ROUND(sum(l_extendedprice),2) count old_sum+10*count +136512434.22 5373 136512434.22 +update lineitem set l_extendedprice=l_extendedprice-10 where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +select ROUND(sum(l_extendedprice),2), 5373 as count, +136458704.22 as old_sum from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +ROUND(sum(l_extendedprice),2) count old_sum +136458704.22 5373 136458704.22 +# LooseScan PS +# ============ +prepare stmt from " +update lineitem set l_extendedprice=l_extendedprice+? where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +"; +select 5373 as count, 136458704.22 as old_sum; +count old_sum +5373 136458704.22 +set @a1=20; +execute stmt using @a1; +select ROUND(sum(l_extendedprice),2), 5373 as count, +(136458704.22+20*5373) as 'old_sum+20*count' + from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +ROUND(sum(l_extendedprice),2) count old_sum+20*count +136566164.22 5373 136566164.22 +set @a2=10; +execute stmt using @a2; +select ROUND(sum(l_extendedprice),2), 5373 as count, +(136458704.22+30*5373) as 'old_sum+30*count' + from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +ROUND(sum(l_extendedprice),2) count old_sum+30*count +136619894.22 5373 136619894.22 +execute stmt using -(@a1+@a2); +select ROUND(sum(l_extendedprice),2), 5373 as count, +136458704.22 as old_sum from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +ROUND(sum(l_extendedprice),2) count old_sum +136458704.22 5373 136458704.22 +deallocate prepare stmt; +# LooseScan SP +# ============ +create procedure p(d int) +update lineitem set l_extendedprice=l_extendedprice+d where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +select 5373 as count, 136458704.22 as old_sum; +count old_sum +5373 136458704.22 +call p(10); +select ROUND(sum(l_extendedprice),2), 5373 as count, +(136458704.22+10*5373) as 'old_sum+10*count' + from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +ROUND(sum(l_extendedprice),2) count old_sum+10*count +136512434.22 5373 136512434.22 +call p(20); +select ROUND(sum(l_extendedprice),2), 5373 as count, +(136458704.22+30*5373) as 'old_sum+30*count' + from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +ROUND(sum(l_extendedprice),2) count old_sum+30*count +136619894.22 5373 136619894.22 +call p(-(10+20)); +select ROUND(sum(l_extendedprice),2), 5373 as count, +136458704.22 as old_sum from lineitem where l_suppkey in +(select ps_suppkey from partsupp_small +where ps_partkey in (1,2,3)); +ROUND(sum(l_extendedprice),2) count old_sum +136458704.22 5373 136458704.22 +drop procedure p; +# DuplicateWeedout +# ================ +set @tmp_optimizer_switch= @@optimizer_switch; +set optimizer_switch='materialization=off'; +analyze table lineitem; +Table Op Msg_type Msg_text +dbt3_s001.lineitem analyze status Engine-independent statistics collected +dbt3_s001.lineitem analyze status OK +analyze table orders; +Table Op Msg_type Msg_text +dbt3_s001.orders analyze status Engine-independent statistics collected +dbt3_s001.orders analyze status OK +explain +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary +1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary +explain format=json +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 4.129940741, + "nested_loop": [ + { + "duplicates_removal": [ + { + "table": { + "table_name": "supplier", + "access_type": "range", + "possible_keys": ["PRIMARY"], + "key": "PRIMARY", + "key_length": "4", + "used_key_parts": ["s_suppkey"], + "loops": 1, + "rows": 1, + "cost": 0.001478954, + "filtered": 100, + "attached_condition": "supplier.s_suppkey < 2", + "using_index": true + } + }, + { + "table": { + "table_name": "partsupp_small", + "access_type": "ref", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "i_ps_sup_part", + "key_length": "4", + "used_key_parts": ["ps_suppkey"], + "ref": ["dbt3_s001.supplier.s_suppkey"], + "loops": 1, + "rows": 17, + "cost": 0.003160332, + "filtered": 79.54545593, + "attached_condition": "partsupp_small.ps_partkey is not null", + "using_index": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_suppkey_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 14, + "rows": 30, + "cost": 0.069152188, + "filtered": 100, + "using_index": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 420.35, + "rows": 30, + "cost": 1.994712365, + "filtered": 0.237896994, + "using_index": true + } + } + ] + } + ] + } +} +select count(*) from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +count(*) +471 +select 471 as count, 10751458.66 as old_sum; +count old_sum +471 10751458.66 +explain +update lineitem set l_extendedprice=l_extendedprice+10 where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY supplier range PRIMARY PRIMARY 4 NULL 1 Using where; Using index; Start temporary +1 PRIMARY partsupp_small ref PRIMARY,i_ps_partkey,i_ps_suppkey,i_ps_sup_part i_ps_sup_part 4 dbt3_s001.supplier.s_suppkey 17 Using where; Using index +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_suppkey_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 +1 PRIMARY lineitem ref i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 dbt3_s001.partsupp_small.ps_partkey 30 Using index; End temporary +explain format=json +update lineitem set l_extendedprice=l_extendedprice+10 where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +EXPLAIN +{ + "query_block": { + "select_id": 1, + "cost": 4.590092321, + "nested_loop": [ + { + "duplicates_removal": [ + { + "table": { + "table_name": "supplier", + "access_type": "range", + "possible_keys": ["PRIMARY"], + "key": "PRIMARY", + "key_length": "4", + "used_key_parts": ["s_suppkey"], + "loops": 1, + "rows": 1, + "cost": 0.001478954, + "filtered": 100, + "attached_condition": "supplier.s_suppkey < 2", + "using_index": true + } + }, + { + "table": { + "table_name": "partsupp_small", + "access_type": "ref", + "possible_keys": [ + "PRIMARY", + "i_ps_partkey", + "i_ps_suppkey", + "i_ps_sup_part" + ], + "key": "i_ps_sup_part", + "key_length": "4", + "used_key_parts": ["ps_suppkey"], + "ref": ["dbt3_s001.supplier.s_suppkey"], + "loops": 1, + "rows": 17, + "cost": 0.003160332, + "filtered": 79.54545593, + "attached_condition": "partsupp_small.ps_partkey is not null", + "using_index": true + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_suppkey_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 14, + "rows": 30, + "cost": 0.529303768, + "filtered": 100 + } + }, + { + "table": { + "table_name": "lineitem", + "access_type": "ref", + "possible_keys": ["i_l_suppkey_partkey", "i_l_partkey"], + "key": "i_l_partkey", + "key_length": "5", + "used_key_parts": ["l_partkey"], + "ref": ["dbt3_s001.partsupp_small.ps_partkey"], + "loops": 420.35, + "rows": 30, + "cost": 1.994712365, + "filtered": 0.237896994, + "using_index": true + } + } + ] + } + ] + } +} +update lineitem set l_extendedprice=l_extendedprice+10 where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +select ROUND(sum(l_extendedprice),2), 471 as count, +(10751458.66+10*471) as 'old_sum+10*count' + from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +ROUND(sum(l_extendedprice),2) count old_sum+10*count +10756168.66 471 10756168.66 +update lineitem set l_extendedprice=l_extendedprice-10 where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +select ROUND(sum(l_extendedprice),2), 471 as count, +10751458.66 as old_sum from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +ROUND(sum(l_extendedprice),2) count old_sum +10751458.66 471 10751458.66 +# DuplicateWeedout PS +# =================== +prepare stmt from " +update lineitem set l_extendedprice=l_extendedprice+? where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +"; +select 471 as count, 10751458.66 as old_sum; +count old_sum +471 10751458.66 +set @a1=20; +execute stmt using @a1; +select ROUND(sum(l_extendedprice),2), 471 as count, +(10751458.66+20*471) as 'old_sum+20*count' + from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +ROUND(sum(l_extendedprice),2) count old_sum+20*count +10760878.66 471 10760878.66 +set @a2=10; +execute stmt using @a2; +select ROUND(sum(l_extendedprice),2), 471 as count, +(10751458.66+30*471) as 'old_sum+30*count' + from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +ROUND(sum(l_extendedprice),2) count old_sum+30*count +10765588.66 471 10765588.66 +execute stmt using -(@a1+@a2); +select ROUND(sum(l_extendedprice),2), 471 as count, +10751458.66 as old_sum from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +ROUND(sum(l_extendedprice),2) count old_sum +10751458.66 471 10751458.66 +deallocate prepare stmt; +# DuplicateWeedout SP +# =================== +create procedure p(d int) +update lineitem set l_extendedprice=l_extendedprice+d where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +select 471 as count, 10751458.66 as old_sum; +count old_sum +471 10751458.66 +call p(10); +select ROUND(sum(l_extendedprice),2), 471 as count, +(10751458.66+10*471) as 'old_sum+10*count' + from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +ROUND(sum(l_extendedprice),2) count old_sum+10*count +10756168.66 471 10756168.66 +call p(20); +select ROUND(sum(l_extendedprice),2), 471 as count, +(10751458.66+30*471) as 'old_sum+30*count' + from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +ROUND(sum(l_extendedprice),2) count old_sum+30*count +10765588.66 471 10765588.66 +call p(-(10+20)); +select ROUND(sum(l_extendedprice),2), 471 as count, +10751458.66 as old_sum from lineitem where l_partkey in ( +select ps_partkey +from partsupp_small join lineitem on ps_partkey=l_partkey +where ps_suppkey in ( +select s_suppkey from supplier where s_suppkey < 2 +) +); +ROUND(sum(l_extendedprice),2) count old_sum +10751458.66 471 10751458.66 +drop procedure p; +set @@optimizer_switch=@tmp_optimizer_switch; +drop table partsupp_small; DROP DATABASE dbt3_s001; diff --git a/mysql-test/main/update_single_to_multi.test b/mysql-test/main/update_single_to_multi.test index a215c5a..7364806 100644 --- a/mysql-test/main/update_single_to_multi.test +++ b/mysql-test/main/update_single_to_multi.test @@ -587,4 +587,246 @@ update orders set o_totalprice = o_totalprice+50 where $c11; eval select o_orderkey, o_totalprice from orders where $c11; +CREATE TABLE partsupp_small ( + ps_partkey int(11) NOT NULL DEFAULT '0', + ps_suppkey int(11) NOT NULL DEFAULT '0', + ps_availqty int(11) DEFAULT NULL, + ps_supplycost double DEFAULT NULL, + ps_comment varchar(199) DEFAULT NULL, + PRIMARY KEY (ps_partkey,ps_suppkey), + KEY i_ps_partkey (ps_partkey), + KEY i_ps_suppkey (ps_suppkey) +); + +create index i_ps_sup_part on partsupp_small(ps_suppkey, ps_partkey); +insert into partsupp_small select * from partsupp where ps_partkey <50; +analyze table partsupp_small persistent for all; + +--echo # LooseScan +--echo # ========= + +let $c12 = l_suppkey in + (select ps_suppkey from partsupp_small + where ps_partkey in (1,2,3)); + +eval +explain +select count(*) from lineitem where $c12; +eval +explain format=json +select count(*) from lineitem where $c12; +eval +select count(*) from lineitem where $c12; +let $l_count = + query_get_value('select count(*) as a from lineitem where $c12;', a, 1); +let $l_old_sum = + query_get_value('select ROUND(sum(l_extendedprice),2) as a + from lineitem where $c12;', a, 1 + ); +eval select $l_count as count, $l_old_sum as old_sum; + +eval +explain +update lineitem set l_extendedprice=l_extendedprice+10 where $c12; +eval +explain format=json +update lineitem set l_extendedprice=l_extendedprice+10 where $c12; +eval +update lineitem set l_extendedprice=l_extendedprice+10 where $c12; +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+10*$l_count) as 'old_sum+10*count' + from lineitem where $c12; + +eval +update lineitem set l_extendedprice=l_extendedprice-10 where $c12; +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + $l_old_sum as old_sum from lineitem where $c12; + + +--echo # LooseScan PS +--echo # ============ + +eval +prepare stmt from " +update lineitem set l_extendedprice=l_extendedprice+? where $c12; +"; + +let $l_count = query_get_value('select count(*) as a + from lineitem where $c12;', a, 1 ); +let $l_old_sum = query_get_value('select ROUND(sum(l_extendedprice),2) as a + from lineitem where $c12;', a, 1 ); +eval select $l_count as count, $l_old_sum as old_sum; +eval +set @a1=20; +execute stmt using @a1; +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+20*$l_count) as 'old_sum+20*count' + from lineitem where $c12; +set @a2=10; +execute stmt using @a2; +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+30*$l_count) as 'old_sum+30*count' + from lineitem where $c12; +execute stmt using -(@a1+@a2); +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + $l_old_sum as old_sum from lineitem where $c12; + +deallocate prepare stmt; + +--echo # LooseScan SP +--echo # ============ + +eval +create procedure p(d int) +update lineitem set l_extendedprice=l_extendedprice+d where $c12; + +let $l_count = query_get_value('select count(*) as a + from lineitem where $c12;', a, 1 ); +let $l_old_sum = query_get_value('select ROUND(sum(l_extendedprice),2) as a + from lineitem where $c12;', a, 1 ); +eval select $l_count as count, $l_old_sum as old_sum; +eval +call p(10); +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+10*$l_count) as 'old_sum+10*count' + from lineitem where $c12; +call p(20); +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+30*$l_count) as 'old_sum+30*count' + from lineitem where $c12; +call p(-(10+20)); +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + $l_old_sum as old_sum from lineitem where $c12; + +drop procedure p; + +--echo # DuplicateWeedout +--echo # ================ + +set @tmp_optimizer_switch= @@optimizer_switch; +set optimizer_switch='materialization=off'; + +analyze table lineitem; +analyze table orders; + +let $c13 = l_partkey in ( + select ps_partkey + from partsupp_small join lineitem on ps_partkey=l_partkey + where ps_suppkey in ( + select s_suppkey from supplier where s_suppkey < 2 + ) +); + +eval +explain +select count(*) from lineitem where $c13; +eval +explain format=json +select count(*) from lineitem where $c13; +eval +select count(*) from lineitem where $c13; + +let $l_count = query_get_value('select count(*) as a + from lineitem where $c13;', a, 1 ); +let $l_old_sum = query_get_value('select ROUND(sum(l_extendedprice),2) as a + from lineitem where $c13;', a, 1 ); +eval select $l_count as count, $l_old_sum as old_sum; + +eval +explain +update lineitem set l_extendedprice=l_extendedprice+10 where $c13; +eval +explain format=json +update lineitem set l_extendedprice=l_extendedprice+10 where $c13; +eval +update lineitem set l_extendedprice=l_extendedprice+10 where $c13; +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+10*$l_count) as 'old_sum+10*count' + from lineitem where $c13; + +eval +update lineitem set l_extendedprice=l_extendedprice-10 where $c13; +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + $l_old_sum as old_sum from lineitem where $c13; + + +--echo # DuplicateWeedout PS +--echo # =================== + +eval +prepare stmt from " +update lineitem set l_extendedprice=l_extendedprice+? where $c13; +"; + +let $l_count = + query_get_value('select count(*) as a + from lineitem where $c13;', a, 1 ); +let $l_old_sum = + query_get_value('select ROUND(sum(l_extendedprice),2) as a + from lineitem where $c13;', a, 1); +eval select $l_count as count, $l_old_sum as old_sum; +eval +set @a1=20; +execute stmt using @a1; +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+20*$l_count) as 'old_sum+20*count' + from lineitem where $c13; +set @a2=10; +execute stmt using @a2; +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+30*$l_count) as 'old_sum+30*count' + from lineitem where $c13; +execute stmt using -(@a1+@a2); +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + $l_old_sum as old_sum from lineitem where $c13; + +deallocate prepare stmt; + +--echo # DuplicateWeedout SP +--echo # =================== + +eval +create procedure p(d int) +update lineitem set l_extendedprice=l_extendedprice+d where $c13; + +let $l_count = query_get_value('select count(*) as a + from lineitem where $c13;', a, 1 ); +let $l_old_sum = query_get_value('select ROUND(sum(l_extendedprice),2) as a + from lineitem where $c13;', a, 1 ); +eval select $l_count as count, $l_old_sum as old_sum; +eval +call p(10); + +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+10*$l_count) as 'old_sum+10*count' + from lineitem where $c13; +call p(20); +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + ($l_old_sum+30*$l_count) as 'old_sum+30*count' + from lineitem where $c13; +call p(-(10+20)); +eval +select ROUND(sum(l_extendedprice),2), $l_count as count, + $l_old_sum as old_sum from lineitem where $c13; + +drop procedure p; +set @@optimizer_switch=@tmp_optimizer_switch; + +drop table partsupp_small; + DROP DATABASE dbt3_s001; diff --git a/mysql-test/main/update_use_source.result b/mysql-test/main/update_use_source.result index 99d7242..d756775 100644 --- a/mysql-test/main/update_use_source.result +++ b/mysql-test/main/update_use_source.result @@ -1,4 +1,16 @@ -create table t1 (old_c1 integer, old_c2 integer,c1 integer, c2 integer, c3 integer) engine=InnoDB STATS_PERSISTENT=0; +set @save_default_engine=@@default_storage_engine; +####################################### +# # +# Engine InnoDB # +# # +####################################### +set global innodb_stats_persistent=1; +set default_storage_engine=InnoDB; +create table t1 (old_c1 integer, +old_c2 integer, +c1 integer, +c2 integer, +c3 integer); create view v1 as select * from t1 where c2=2; create trigger trg_t1 before update on t1 for each row begin @@ -6,37 +18,39 @@ set new.old_c1=old.c1; set new.old_c2=old.c2; end; / -insert into t1(c1,c2,c3) values (1,1,1); -insert into t1(c1,c2,c3) values (1,2,2); -insert into t1(c1,c2,c3) values (1,3,3); -insert into t1(c1,c2,c3) values (2,1,4); -insert into t1(c1,c2,c3) values (2,2,5); -insert into t1(c1,c2,c3) values (2,3,6); -insert into t1(c1,c2,c3) values (2,4,7); -insert into t1(c1,c2,c3) values (2,5,8); -commit; -select * from t1; -old_c1 old_c2 c1 c2 c3 -NULL NULL 1 1 1 -NULL NULL 1 2 2 -NULL NULL 1 3 3 -NULL NULL 2 1 4 -NULL NULL 2 2 5 -NULL NULL 2 3 6 -NULL NULL 2 4 7 -NULL NULL 2 5 8 -Test without any index -# -# Update a with value from subquery on the same table, no search clause. ALL access -# -start transaction; -update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3); -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +insert into t1(c1,c2,c3) +values (1,1,1), (1,2,2), (1,3,3), +(2,1,4), (2,2,5), (2,3,6), +(2,4,7), (2,5,8); +insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1; +insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1; +####################################### +# Test without any index # +####################################### +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->1 1 1->2 2 * @@ -46,20 +60,56 @@ concat(old_c1,'->',c1) c3 Changed 2->6 6 * 2->7 7 * 2->8 8 * -rollback; +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; # -# Update with search clause on the same table +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition # -start transaction; -update t1 -set c1=10 -where c1 <2 -and exists (select 'X' - from t1 a -where a.c1 = t1.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); affected rows: 3 info: Rows matched: 3 Changed: 3 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->10 1 * 1->10 2 * @@ -69,19 +119,55 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update via RANGE or INDEX access if an index or a primary key exists +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition # -explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where -1 PRIMARY a ALL NULL NULL NULL NULL 8 Using where; FirstMatch(t1) -start transaction; +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; -affected rows: 4 -info: Rows matched: 4 Changed: 4 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -91,13 +177,57 @@ NULL 5 2->12 6 * 2->12 7 * 2->12 8 * -rollback; +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; # # Update with order by # -start transaction; -update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -107,18 +237,54 @@ NULL 5 2->12 6 * 2->12 7 * 2->12 8 * -rollback; +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; # -Update using a view in subquery +# Update with a reference to view in subquery +# in settable value # -start transaction; -update t1 -set c1=c1 +(select max(a.c2) -from v1 a -where a.c1 = t1.c1) ; -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->3 1 * 1->3 2 * @@ -128,19 +294,53 @@ concat(old_c1,'->',c1) c3 Changed 2->4 6 * 2->4 7 * 2->4 8 * -rollback; +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; # -# Update throw a view +# Update view # -start transaction; -update v1 -set c1=c1 + (select max(a.c2) -from t1 a -where a.c1 = v1.c1) +10 -where c3 > 3; -affected rows: 1 -info: Rows matched: 1 Changed: 1 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -150,20 +350,55 @@ NULL 4 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update through a view and using the view in subquery +# Update view with reference to the same view in subquery # -start transaction; -update v1 -set c1=c1 + 1 -where c1 <2 -and exists (select 'X' - from v1 a -where a.c1 = v1.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); affected rows: 1 info: Rows matched: 1 Changed: 1 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 1->2 2 * @@ -173,22 +408,57 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update through a view and using the view in subquery +# Update view with EXISTS and reference to the same view in subquery # -start transaction; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where update v1 -set c1=(select max(a.c1)+10 -from v1 a -where a.c1 = v1.c1) -where c1 <10 -and exists (select 'X' - from v1 a -where a.c2 = v1.c2); +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 1->11 2 * @@ -198,41 +468,107 @@ NULL 4 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update of the index or primary key (c3) +# Update with IN predicand over the updated table in WHERE # -start transaction; -explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 8 -1 PRIMARY a ALL NULL NULL NULL NULL 8 Using where; FirstMatch(t1) -update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 select c3 from t1; c3 -11 -12 -13 -14 -15 -16 -17 -18 -rollback; -# -# update with a limit -# -start transaction; +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3) -limit 2; +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->1 1 1->2 2 * @@ -242,19 +578,55 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# update with a limit and an order by +# Update with a limit and an order by # -start transaction; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3) +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) order by c3 desc limit 2; affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -262,22 +634,61 @@ NULL 3 NULL 4 NULL 5 NULL 6 -2->7 7 * -2->8 8 * -rollback; -Test with an index on updated columns +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +####################################### +# Test with an index # +####################################### create index t1_c2 on t1 (c2,c1); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK # -# Update a with value from subquery on the same table, no search clause. ALL access +# Update with value from subquery on the same table # -start transaction; -update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3); -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->1 1 1->2 2 * @@ -287,20 +698,56 @@ concat(old_c1,'->',c1) c3 Changed 2->6 6 * 2->7 7 * 2->8 8 * -rollback; +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; # -# Update with search clause on the same table +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition # -start transaction; -update t1 -set c1=10 -where c1 <2 -and exists (select 'X' - from t1 a -where a.c1 = t1.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); affected rows: 3 info: Rows matched: 3 Changed: 3 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->10 1 * 1->10 2 * @@ -310,19 +757,53 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update via RANGE or INDEX access if an index or a primary key exists +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition # -explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 2 Using index condition -1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 8 Using index; FirstMatch(t1) -start transaction; +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; -affected rows: 4 -info: Rows matched: 4 Changed: 4 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -332,13 +813,55 @@ NULL 5 2->12 6 * 2->12 7 * 2->12 8 * -rollback; +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; # # Update with order by # -start transaction; -update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -348,18 +871,54 @@ NULL 5 2->12 6 * 2->12 7 * 2->12 8 * -rollback; +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; # -Update using a view in subquery +# Update with a reference to view in subquery +# in settable value # -start transaction; -update t1 -set c1=c1 +(select max(a.c2) -from v1 a -where a.c1 = t1.c1) ; -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->3 1 * 1->3 2 * @@ -369,19 +928,53 @@ concat(old_c1,'->',c1) c3 Changed 2->4 6 * 2->4 7 * 2->4 8 * -rollback; +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; # -# Update throw a view +# Update view # -start transaction; -update v1 -set c1=c1 + (select max(a.c2) -from t1 a -where a.c1 = v1.c1) +10 -where c3 > 3; -affected rows: 1 -info: Rows matched: 1 Changed: 1 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref t1_c2 t1_c2 5 const 8 +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where +2 DEPENDENT SUBQUERY a index NULL t1_c2 10 NULL 32 Using where; Using index +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -391,20 +984,55 @@ NULL 4 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update through a view and using the view in subquery +# Update view with reference to the same view in subquery # -start transaction; -update v1 -set c1=c1 + 1 -where c1 <2 -and exists (select 'X' - from v1 a -where a.c1 = v1.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index; FirstMatch(t1) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition; Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 1 Using where; Using index +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); affected rows: 1 info: Rows matched: 1 Changed: 1 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 1->2 2 * @@ -414,22 +1042,57 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update through a view and using the view in subquery +# Update view with EXISTS and reference to the same view in subquery # -start transaction; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition +3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 5 const 8 Using where; Using index +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index update v1 -set c1=(select max(a.c1)+10 -from v1 a -where a.c1 = v1.c1) -where c1 <10 -and exists (select 'X' - from v1 a -where a.c2 = v1.c2); +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 1->11 2 * @@ -439,41 +1102,107 @@ NULL 4 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update of the index or primary key (c3) +# Update with IN predicand over the updated table in WHERE # -start transaction; -explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 8 Using where +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where 1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1) -update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 select c3 from t1; c3 -11 -12 -13 -14 -15 -16 -17 -18 -rollback; -# -# update with a limit -# -start transaction; +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3) -limit 2; +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->1 1 1->2 2 * @@ -483,19 +1212,55 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# update with a limit and an order by +# Update with a limit and an order by # -start transaction; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3) +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) order by c3 desc limit 2; affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -503,22 +1268,62 @@ NULL 3 NULL 4 NULL 5 NULL 6 -2->7 7 * -2->8 8 * -rollback; -Test with an index on updated columns -create index t1_c3 on t1 (c3); +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +####################################### +# Test with a primary key # +####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK # -# Update a with value from subquery on the same table, no search clause. ALL access +# Update with value from subquery on the same table # -start transaction; -update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3); -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->1 1 1->2 2 * @@ -528,20 +1333,56 @@ concat(old_c1,'->',c1) c3 Changed 2->6 6 * 2->7 7 * 2->8 8 * -rollback; +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; # -# Update with search clause on the same table +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition # -start transaction; -update t1 -set c1=10 -where c1 <2 -and exists (select 'X' - from t1 a -where a.c1 = t1.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); affected rows: 3 info: Rows matched: 3 Changed: 3 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->10 1 * 1->10 2 * @@ -551,19 +1392,55 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update via RANGE or INDEX access if an index or a primary key exists +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition # -explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY a index t1_c2 t1_c2 10 NULL 8 Using where; Using index; LooseScan -1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 1 -start transaction; +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; -affected rows: 4 -info: Rows matched: 4 Changed: 4 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -573,13 +1450,57 @@ NULL 5 2->12 6 * 2->12 7 * 2->12 8 * -rollback; +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; # # Update with order by # -start transaction; -update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -589,18 +1510,54 @@ NULL 5 2->12 6 * 2->12 7 * 2->12 8 * -rollback; +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; # -Update using a view in subquery +# Update with a reference to view in subquery +# in settable value # -start transaction; -update t1 -set c1=c1 +(select max(a.c2) -from v1 a -where a.c1 = t1.c1) ; -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->3 1 * 1->3 2 * @@ -610,19 +1567,53 @@ concat(old_c1,'->',c1) c3 Changed 2->4 6 * 2->4 7 * 2->4 8 * -rollback; +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; # -# Update throw a view +# Update view # -start transaction; -update v1 -set c1=c1 + (select max(a.c2) -from t1 a -where a.c1 = v1.c1) +10 -where c3 > 3; -affected rows: 1 -info: Rows matched: 1 Changed: 1 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range PRIMARY PRIMARY 4 NULL 29 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -632,20 +1623,55 @@ NULL 4 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update through a view and using the view in subquery +# Update view with reference to the same view in subquery # -start transaction; -update v1 -set c1=c1 + 1 -where c1 <2 -and exists (select 'X' - from v1 a -where a.c1 = v1.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); affected rows: 1 info: Rows matched: 1 Changed: 1 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 1->2 2 * @@ -655,22 +1681,57 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update through a view and using the view in subquery +# Update view with EXISTS and reference to the same view in subquery # -start transaction; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where update v1 -set c1=(select max(a.c1)+10 -from v1 a -where a.c1 = v1.c1) -where c1 <10 -and exists (select 'X' - from v1 a -where a.c2 = v1.c2); +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 1->11 2 * @@ -680,41 +1741,107 @@ NULL 4 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update of the index or primary key (c3) +# Update with IN predicand over the updated table in WHERE # -start transaction; -explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 8 Using where -1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1) -update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 select c3 from t1; c3 -11 -12 -13 -14 -15 -16 -17 -18 -rollback; -# -# update with a limit -# -start transaction; +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3) -limit 2; +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->1 1 1->2 2 * @@ -724,19 +1851,55 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# update with a limit and an order by +# Update with a limit and an order by # -start transaction; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 2 Using buffer +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3) +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) order by c3 desc limit 2; affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -744,127 +1907,7346 @@ NULL 3 NULL 4 NULL 5 NULL 6 -2->7 7 * -2->8 8 * -rollback; -Test with a primary key on updated columns -drop index t1_c3 on t1; -alter table t1 add primary key (c3); -# -# Update a with value from subquery on the same table, no search clause. ALL access -# -start transaction; -update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3); -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; -concat(old_c1,'->',c1) c3 Changed -1->1 1 -1->2 2 * -1->3 3 * -2->4 4 * -2->5 5 * -2->6 6 * -2->7 7 * -2->8 8 * -rollback; -# -# Update with search clause on the same table -# -start transaction; -update t1 -set c1=10 -where c1 <2 -and exists (select 'X' - from t1 a -where a.c1 = t1.c1); -affected rows: 3 -info: Rows matched: 3 Changed: 3 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; -concat(old_c1,'->',c1) c3 Changed -1->10 1 * -1->10 2 * -1->10 3 * -NULL 4 -NULL 5 -NULL 6 NULL 7 NULL 8 -rollback; -# -# Update via RANGE or INDEX access if an index or a primary key exists -# -explain update t1 set c1=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 > 3; -id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY a index t1_c2 t1_c2 10 NULL 8 Using where; Using index; LooseScan -1 PRIMARY t1 ref t1_c2 t1_c2 5 test.a.c2 1 -start transaction; -update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; -affected rows: 4 -info: Rows matched: 4 Changed: 4 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; -concat(old_c1,'->',c1) c3 Changed -NULL 1 -NULL 2 -1->11 3 * -NULL 4 -NULL 5 -2->12 6 * -2->12 7 * -2->12 8 * -rollback; -# -# Update with order by -# -start transaction; -update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 order by c2; -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; -concat(old_c1,'->',c1) c3 Changed -NULL 1 -NULL 2 -1->11 3 * -NULL 4 -NULL 5 -2->12 6 * -2->12 7 * -2->12 8 * -rollback; -# -Update using a view in subquery -# -start transaction; -update t1 -set c1=c1 +(select max(a.c2) -from v1 a -where a.c1 = t1.c1) ; -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; -concat(old_c1,'->',c1) c3 Changed -1->3 1 * -1->3 2 * -1->3 3 * -2->4 4 * -2->4 5 * -2->4 6 * -2->4 7 * -2->4 8 * -rollback; -# -# Update throw a view -# -start transaction; -update v1 -set c1=c1 + (select max(a.c2) -from t1 a -where a.c1 = v1.c1) +10 -where c3 > 3; -affected rows: 1 -info: Rows matched: 1 Changed: 1 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# Update with error "Subquery returns more than 1 row" +update t1 set c2=(select c2 from t1); +ERROR 21000: Subquery returns more than 1 row +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +# Update with error "Subquery returns more than 1 row" +# and order by +update t1 set c2=(select c2 from t1) order by c3; +ERROR 21000: Subquery returns more than 1 row +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +# Duplicate value on update a primary key +update t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +ERROR 23000: Duplicate entry '0' for key 'PRIMARY' +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key with ignore +update ignore t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key and limit +update t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 limit 2; +ERROR 23000: Duplicate entry '0' for key 'PRIMARY' +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key with ignore +# and limit +update ignore t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Update no rows found +update t1 set c1=10 +where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +10 1 1 +10 2 2 +10 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Update no rows changed +drop trigger trg_t1; +update t1 set c1=c1 +where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 0 +info: Rows matched: 3 Changed: 0 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Check call of after trigger +# +create or replace trigger trg_t2 after update on t1 for each row +begin +declare msg varchar(100); +if (new.c3 = 5) then +set msg=concat('in after update trigger on ',new.c3); +SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg; +end if; +end; +/ +update t1 set c1=2 +where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1); +ERROR 45000: in after update trigger on 5 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Check update with order by and after trigger +# +update t1 set c1=2 +where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1) +order by t1.c2, t1.c1; +ERROR 45000: in after update trigger on 5 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +drop view v1; +# +# Check update on view with check option +# +create view v1 as select * from t1 where c2=2 with check option; +update v1 set c2=3 where c1=1; +ERROR 44000: CHECK OPTION failed `test`.`v1` +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +update v1 set c2=(select max(c3) from v1) where c1=1; +ERROR 44000: CHECK OPTION failed `test`.`v1` +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1; +select c1,c2,c3 from t1; +c1 c2 c3 +0 2 2 +1 1 1 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +drop table tmp; +drop view v1; +drop table t1; +# +# Test on dynamic columns (blob) +# +create table assets ( +item_name varchar(32) primary key, -- A common attribute for all items +dynamic_cols blob -- Dynamic columns will be stored here +); +INSERT INTO assets VALUES ('MariaDB T-shirt', +COLUMN_CREATE('color', 'blue', 'size', 'XL')); +INSERT INTO assets VALUES ('Thinkpad Laptop', +COLUMN_CREATE('color', 'black', 'price', 500)); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt blue +Thinkpad Laptop black +UPDATE assets +SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years') +WHERE item_name='Thinkpad Laptop'; +SELECT item_name, +COLUMN_GET(dynamic_cols, 'warranty' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt NULL +Thinkpad Laptop 3 years +UPDATE assets +SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years') +WHERE item_name in +(select b.item_name from assets b +where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); +SELECT item_name, +COLUMN_GET(dynamic_cols, 'warranty' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt NULL +Thinkpad Laptop 4 years +UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', +(select COLUMN_GET(b.dynamic_cols, 'color' as char) +from assets b +where assets.item_name = item_name)); +SELECT item_name, +COLUMN_GET(dynamic_cols, 'warranty' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt blue +Thinkpad Laptop black +drop table assets; +# +# Test on fulltext columns +# +CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)); +INSERT INTO ft2(copy) VALUES +('MySQL vs MariaDB database'), +('Oracle vs MariaDB database'), +('PostgreSQL vs MariaDB database'), +('MariaDB overview'), +('Foreign keys'), +('Primary keys'), +('Indexes'), +('Transactions'), +('Triggers'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +copy +MySQL vs MariaDB database +Oracle vs MariaDB database +PostgreSQL vs MariaDB database +update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5))) +from ft2 b WHERE MATCH(b.copy) AGAINST('database')) +where MATCH(copy) AGAINST('keys'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword'); +copy +mykeyword Postg +mykeyword Postg +drop table ft2; +####################################### +# # +# Engine Aria # +# # +####################################### +set default_storage_engine=Aria; +create table t1 (old_c1 integer, +old_c2 integer, +c1 integer, +c2 integer, +c3 integer); +create view v1 as select * from t1 where c2=2; +create trigger trg_t1 before update on t1 for each row +begin +set new.old_c1=old.c1; +set new.old_c2=old.c2; +end; +/ +insert into t1(c1,c2,c3) +values (1,1,1), (1,2,2), (1,3,3), +(2,1,4), (2,2,5), (2,3,6), +(2,4,7), (2,5,8); +insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1; +insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1; +####################################### +# Test without any index # +####################################### +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +1->3 3 * +2->4 4 * +2->5 5 * +2->6 6 * +2->7 7 * +2->8 8 * +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->10 1 * +1->10 2 * +1->10 3 * +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a reference to view in subquery +# in settable value +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->3 1 * +1->3 2 * +1->3 3 * +2->4 4 * +2->4 5 * +2->4 6 * +2->4 7 * +2->4 8 * +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +2->17 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +info: Rows matched: 1 Changed: 1 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with EXISTS and reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->11 2 * +NULL 3 +NULL 4 +2->12 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with IN predicand over the updated table in WHERE +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select c3 from t1; +c3 +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit and an order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +####################################### +# Test with an index # +####################################### +create index t1_c2 on t1 (c2,c1); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +1->3 3 * +2->4 4 * +2->5 5 * +2->6 6 * +2->7 7 * +2->8 8 * +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->10 1 * +1->10 2 * +1->10 3 * +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 21 Using index condition +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 21 Using index condition +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 21 Using index condition +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 5 NULL 21 Using index condition +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a reference to view in subquery +# in settable value +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->3 1 * +1->3 2 * +1->3 3 * +2->4 4 * +2->4 5 * +2->4 6 * +2->4 7 * +2->4 8 * +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref t1_c2 t1_c2 5 const 8 +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where +2 DEPENDENT SUBQUERY a index NULL t1_c2 10 NULL 32 Using where; Using index +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +2->17 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index; FirstMatch(t1) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition; Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 1 Using where; Using index +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +info: Rows matched: 1 Changed: 1 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with EXISTS and reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition +3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 5 const 8 Using where; Using index +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->11 2 * +NULL 3 +NULL 4 +2->12 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with IN predicand over the updated table in WHERE +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select c3 from t1; +c3 +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit and an order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +####################################### +# Test with a primary key # +####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +1->3 3 * +2->4 4 * +2->5 5 * +2->6 6 * +2->7 7 * +2->8 8 * +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->10 1 * +1->10 2 * +1->10 3 * +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a reference to view in subquery +# in settable value +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->3 1 * +1->3 2 * +1->3 3 * +2->4 4 * +2->4 5 * +2->4 6 * +2->4 7 * +2->4 8 * +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range PRIMARY PRIMARY 4 NULL 30 Using index condition; Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +2->17 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +info: Rows matched: 1 Changed: 1 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with EXISTS and reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->11 2 * +NULL 3 +NULL 4 +2->12 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with IN predicand over the updated table in WHERE +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select c3 from t1; +c3 +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit and an order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 2 Using buffer +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# Update with error "Subquery returns more than 1 row" +update t1 set c2=(select c2 from t1); +ERROR 21000: Subquery returns more than 1 row +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +# Update with error "Subquery returns more than 1 row" +# and order by +update t1 set c2=(select c2 from t1) order by c3; +ERROR 21000: Subquery returns more than 1 row +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +# Duplicate value on update a primary key +update t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +ERROR 23000: Duplicate entry '0' for key 'PRIMARY' +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key with ignore +update ignore t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key and limit +update t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 limit 2; +ERROR 23000: Duplicate entry '0' for key 'PRIMARY' +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key with ignore +# and limit +update ignore t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Update no rows found +update t1 set c1=10 +where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +10 1 1 +10 2 2 +10 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Update no rows changed +drop trigger trg_t1; +update t1 set c1=c1 +where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 0 +info: Rows matched: 3 Changed: 0 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Check call of after trigger +# +create or replace trigger trg_t2 after update on t1 for each row +begin +declare msg varchar(100); +if (new.c3 = 5) then +set msg=concat('in after update trigger on ',new.c3); +SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg; +end if; +end; +/ +update t1 set c1=2 +where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1); +ERROR 45000: in after update trigger on 5 +select c1,c2,c3 from t1; +c1 c2 c3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 1 +2 1 4 +2 2 2 +2 2 5 +2 3 3 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Check update with order by and after trigger +# +update t1 set c1=2 +where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1) +order by t1.c2, t1.c1; +ERROR 45000: in after update trigger on 5 +select c1,c2,c3 from t1; +c1 c2 c3 +1 3 3 +11 2 12 +11 3 13 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 1 +2 1 11 +2 1 14 +2 1 4 +2 2 2 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +drop view v1; +# +# Check update on view with check option +# +create view v1 as select * from t1 where c2=2 with check option; +update v1 set c2=3 where c1=1; +ERROR 44000: CHECK OPTION failed `test`.`v1` +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +update v1 set c2=(select max(c3) from v1) where c1=1; +ERROR 44000: CHECK OPTION failed `test`.`v1` +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1; +select c1,c2,c3 from t1; +c1 c2 c3 +0 2 2 +1 1 1 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +drop table tmp; +drop view v1; +drop table t1; +# +# Test on dynamic columns (blob) +# +create table assets ( +item_name varchar(32) primary key, -- A common attribute for all items +dynamic_cols blob -- Dynamic columns will be stored here +); +INSERT INTO assets VALUES ('MariaDB T-shirt', +COLUMN_CREATE('color', 'blue', 'size', 'XL')); +INSERT INTO assets VALUES ('Thinkpad Laptop', +COLUMN_CREATE('color', 'black', 'price', 500)); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt blue +Thinkpad Laptop black +UPDATE assets +SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years') +WHERE item_name='Thinkpad Laptop'; +SELECT item_name, +COLUMN_GET(dynamic_cols, 'warranty' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt NULL +Thinkpad Laptop 3 years +UPDATE assets +SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years') +WHERE item_name in +(select b.item_name from assets b +where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); +SELECT item_name, +COLUMN_GET(dynamic_cols, 'warranty' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt NULL +Thinkpad Laptop 4 years +UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', +(select COLUMN_GET(b.dynamic_cols, 'color' as char) +from assets b +where assets.item_name = item_name)); +SELECT item_name, +COLUMN_GET(dynamic_cols, 'warranty' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt blue +Thinkpad Laptop black +drop table assets; +# +# Test on fulltext columns +# +CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)); +INSERT INTO ft2(copy) VALUES +('MySQL vs MariaDB database'), +('Oracle vs MariaDB database'), +('PostgreSQL vs MariaDB database'), +('MariaDB overview'), +('Foreign keys'), +('Primary keys'), +('Indexes'), +('Transactions'), +('Triggers'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +copy +MySQL vs MariaDB database +Oracle vs MariaDB database +PostgreSQL vs MariaDB database +update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5))) +from ft2 b WHERE MATCH(b.copy) AGAINST('database')) +where MATCH(copy) AGAINST('keys'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword'); +copy +mykeyword Postg +mykeyword Postg +drop table ft2; +####################################### +# # +# Engine MyISAM # +# # +####################################### +set default_storage_engine=MyISAM; +create table t1 (old_c1 integer, +old_c2 integer, +c1 integer, +c2 integer, +c3 integer); +create view v1 as select * from t1 where c2=2; +create trigger trg_t1 before update on t1 for each row +begin +set new.old_c1=old.c1; +set new.old_c2=old.c2; +end; +/ +insert into t1(c1,c2,c3) +values (1,1,1), (1,2,2), (1,3,3), +(2,1,4), (2,2,5), (2,3,6), +(2,4,7), (2,5,8); +insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1; +insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table tmp as select * from t1; +####################################### +# Test without any index # +####################################### +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +1->3 3 * +2->4 4 * +2->5 5 * +2->6 6 * +2->7 7 * +2->8 8 * +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->10 1 * +1->10 2 * +1->10 3 * +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a reference to view in subquery +# in settable value +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->3 1 * +1->3 2 * +1->3 3 * +2->4 4 * +2->4 5 * +2->4 6 * +2->4 7 * +2->4 8 * +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +2->17 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +info: Rows matched: 1 Changed: 1 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with EXISTS and reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->11 2 * +NULL 3 +NULL 4 +2->12 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with IN predicand over the updated table in WHERE +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select c3 from t1; +c3 +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit and an order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +####################################### +# Test with an index # +####################################### +create index t1_c2 on t1 (c2,c1); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +1->3 3 * +2->4 4 * +2->5 5 * +2->6 6 * +2->7 7 * +2->8 8 * +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a index NULL t1_c2 10 NULL 32 Using where; Using index; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->10 1 * +1->10 2 * +1->10 3 * +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY a ref t1_c2 t1_c2 5 test.t1.c2 5 Using index; FirstMatch(t1) +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a reference to view in subquery +# in settable value +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->3 1 * +1->3 2 * +1->3 3 * +2->4 4 * +2->4 5 * +2->4 6 * +2->4 7 * +2->4 8 * +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref t1_c2 t1_c2 5 const 8 +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using where +2 DEPENDENT SUBQUERY a index NULL t1_c2 10 NULL 32 Using where; Using index +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +2->17 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index; FirstMatch(t1) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 1 Using index condition; Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 1 Using where; Using index +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +info: Rows matched: 1 Changed: 1 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with EXISTS and reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition +1 PRIMARY t1 ref t1_c2 t1_c2 5 const 8 Using index; FirstMatch(t1) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range t1_c2 t1_c2 10 NULL 2 Using index condition +3 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 5 const 8 Using where; Using index +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 1 Using index +update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->11 2 * +NULL 3 +NULL 4 +2->12 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with IN predicand over the updated table in WHERE +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select c3 from t1; +c3 +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit and an order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +####################################### +# Test with a primary key # +####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status Table is already up to date +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +1->3 3 * +2->4 4 * +2->5 5 * +2->6 6 * +2->7 7 * +2->8 8 * +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->10 1 * +1->10 2 * +1->10 3 * +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a reference to view in subquery +# in settable value +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->3 1 * +1->3 2 * +1->3 3 * +2->4 4 * +2->4 5 * +2->4 6 * +2->4 7 * +2->4 8 * +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +2->17 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +info: Rows matched: 1 Changed: 1 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with EXISTS and reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->11 2 * +NULL 3 +NULL 4 +2->12 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with IN predicand over the updated table in WHERE +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select c3 from t1; +c3 +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit and an order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 index NULL PRIMARY 4 NULL 2 Using buffer +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 Using index +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# Update with error "Subquery returns more than 1 row" +update t1 set c2=(select c2 from t1); +ERROR 21000: Subquery returns more than 1 row +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +# Update with error "Subquery returns more than 1 row" +# and order by +update t1 set c2=(select c2 from t1) order by c3; +ERROR 21000: Subquery returns more than 1 row +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +# Duplicate value on update a primary key +update t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +ERROR 23000: Duplicate entry '0' for key 'PRIMARY' +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key with ignore +update ignore t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key and limit +update t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 limit 2; +ERROR 23000: Duplicate entry '0' for key 'PRIMARY' +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key with ignore +# and limit +update ignore t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Update no rows found +update t1 set c1=10 +where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +10 1 1 +10 2 2 +10 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Update no rows changed +drop trigger trg_t1; +update t1 set c1=c1 +where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 0 +info: Rows matched: 3 Changed: 0 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Check call of after trigger +# +create or replace trigger trg_t2 after update on t1 for each row +begin +declare msg varchar(100); +if (new.c3 = 5) then +set msg=concat('in after update trigger on ',new.c3); +SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg; +end if; +end; +/ +update t1 set c1=2 +where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1); +ERROR 45000: in after update trigger on 5 +select c1,c2,c3 from t1; +c1 c2 c3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 1 +2 1 4 +2 2 2 +2 2 5 +2 3 3 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Check update with order by and after trigger +# +update t1 set c1=2 +where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1) +order by t1.c2, t1.c1; +ERROR 45000: in after update trigger on 5 +select c1,c2,c3 from t1; +c1 c2 c3 +1 3 3 +11 2 12 +11 3 13 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 1 +2 1 11 +2 1 14 +2 1 4 +2 2 2 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +drop view v1; +# +# Check update on view with check option +# +create view v1 as select * from t1 where c2=2 with check option; +update v1 set c2=3 where c1=1; +ERROR 44000: CHECK OPTION failed `test`.`v1` +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +update v1 set c2=(select max(c3) from v1) where c1=1; +ERROR 44000: CHECK OPTION failed `test`.`v1` +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1; +select c1,c2,c3 from t1; +c1 c2 c3 +0 2 2 +1 1 1 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +drop table tmp; +drop view v1; +drop table t1; +# +# Test on dynamic columns (blob) +# +create table assets ( +item_name varchar(32) primary key, -- A common attribute for all items +dynamic_cols blob -- Dynamic columns will be stored here +); +INSERT INTO assets VALUES ('MariaDB T-shirt', +COLUMN_CREATE('color', 'blue', 'size', 'XL')); +INSERT INTO assets VALUES ('Thinkpad Laptop', +COLUMN_CREATE('color', 'black', 'price', 500)); +SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt blue +Thinkpad Laptop black +UPDATE assets +SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years') +WHERE item_name='Thinkpad Laptop'; +SELECT item_name, +COLUMN_GET(dynamic_cols, 'warranty' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt NULL +Thinkpad Laptop 3 years +UPDATE assets +SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years') +WHERE item_name in +(select b.item_name from assets b +where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); +SELECT item_name, +COLUMN_GET(dynamic_cols, 'warranty' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt NULL +Thinkpad Laptop 4 years +UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', +(select COLUMN_GET(b.dynamic_cols, 'color' as char) +from assets b +where assets.item_name = item_name)); +SELECT item_name, +COLUMN_GET(dynamic_cols, 'warranty' as char) AS color +FROM assets; +item_name color +MariaDB T-shirt blue +Thinkpad Laptop black +drop table assets; +# +# Test on fulltext columns +# +CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)); +INSERT INTO ft2(copy) VALUES +('MySQL vs MariaDB database'), +('Oracle vs MariaDB database'), +('PostgreSQL vs MariaDB database'), +('MariaDB overview'), +('Foreign keys'), +('Primary keys'), +('Indexes'), +('Transactions'), +('Triggers'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); +copy +MySQL vs MariaDB database +Oracle vs MariaDB database +PostgreSQL vs MariaDB database +update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5))) +from ft2 b WHERE MATCH(b.copy) AGAINST('database')) +where MATCH(copy) AGAINST('keys'); +SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword'); +copy +mykeyword Postg +mykeyword Postg +drop table ft2; +####################################### +# # +# Engine MEMORY # +# # +####################################### +set default_storage_engine=MEMORY; +create table t1 (old_c1 integer, +old_c2 integer, +c1 integer, +c2 integer, +c3 integer); +create view v1 as select * from t1 where c2=2; +create trigger trg_t1 before update on t1 for each row +begin +set new.old_c1=old.c1; +set new.old_c2=old.c2; +end; +/ +insert into t1(c1,c2,c3) +values (1,1,1), (1,2,2), (1,3,3), +(2,1,4), (2,2,5), (2,3,6), +(2,4,7), (2,5,8); +insert into t1 select NULL, NULL, c1+10,c2,c3+10 from t1; +insert into t1 select NULL, NULL, c1+20,c2+1,c3+20 from t1; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +create table tmp as select * from t1; +####################################### +# Test without any index # +####################################### +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +1->3 3 * +2->4 4 * +2->5 5 * +2->6 6 * +2->7 7 * +2->8 8 * +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->10 1 * +1->10 2 * +1->10 3 * +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a reference to view in subquery +# in settable value +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->3 1 * +1->3 2 * +1->3 3 * +2->4 4 * +2->4 5 * +2->4 6 * +2->4 7 * +2->4 8 * +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +2->17 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +info: Rows matched: 1 Changed: 1 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with EXISTS and reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->11 2 * +NULL 3 +NULL 4 +2->12 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with IN predicand over the updated table in WHERE +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select c3 from t1; +c3 +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit and an order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +####################################### +# Test with an index # +####################################### +create index t1_c2 on t1 (c2,c1); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +1->3 3 * +2->4 4 * +2->5 5 * +2->6 6 * +2->7 7 * +2->8 8 * +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->10 1 * +1->10 2 * +1->10 3 * +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL t1_c2 NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a reference to view in subquery +# in settable value +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2 +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->3 1 * +1->3 2 * +1->3 3 * +2->4 4 * +2->4 5 * +2->4 6 * +2->4 7 * +2->4 8 * +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL t1_c2 NULL NULL NULL 32 Using where +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +2->17 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2 FirstMatch(t1) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,func 2 Using where +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +affected rows: 1 +info: Rows matched: 1 Changed: 1 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update view with EXISTS and reference to the same view in subquery +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL t1_c2 NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ref t1_c2 t1_c2 10 const,test.t1.c1 2 +update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +1->11 2 * +NULL 3 +NULL 4 +2->12 5 * +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with IN predicand over the updated table in WHERE +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 2 FirstMatch(t1) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 32 Using where +1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 2 FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select c3 from t1; +c3 +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit and an order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Operation failed +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +affected rows: 2 +info: Rows matched: 2 Changed: 2 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +NULL 3 +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +####################################### +# Test with a primary key # +####################################### +drop index t1_c2 on t1; +alter table t1 add primary key (c3); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +# +# Update with value from subquery on the same table +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 +update t1 set c1=(select a.c3 from t1 a where a.c3 = t1.c3); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->1 1 +1->2 2 * +1->3 3 * +2->4 4 * +2->5 5 * +2->6 6 * +2->7 7 * +2->8 8 * +11->11 11 +11->12 12 * +11->13 13 * +12->14 14 * +12->15 15 * +12->16 16 * +12->17 17 * +12->18 18 * +21->21 21 +21->22 22 * +21->23 23 * +22->24 24 * +22->25 25 * +22->26 26 * +22->27 27 * +22->28 28 * +31->31 31 +31->32 32 * +31->33 33 * +32->34 34 * +32->35 35 * +32->36 36 * +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + possibly sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c1=10 where c1 <2 +and exists (select 'X' from t1 a where a.c1 = t1.c1); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->10 1 * +1->10 2 * +1->10 3 * +NULL 4 +NULL 5 +NULL 6 +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with EXISTS subquery over the updated table +# in WHERE + non-sargable condition +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with order by +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; Using filesort +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED a ALL NULL NULL NULL NULL 32 +update t1 set c1=c1+10 where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 order by c2; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +NULL 1 +NULL 2 +1->11 3 * +NULL 4 +NULL 5 +2->12 6 * +2->12 7 * +2->12 8 * +NULL 11 +NULL 12 +11->21 13 * +NULL 14 +NULL 15 +12->22 16 * +12->22 17 * +12->22 18 * +NULL 21 +21->31 22 * +21->31 23 * +NULL 24 +22->32 25 * +22->32 26 * +22->32 27 * +22->32 28 * +NULL 31 +31->41 32 * +31->41 33 * +NULL 34 +32->42 35 * +32->42 36 * +32->42 37 * +32->42 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a reference to view in subquery +# in settable value +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update t1 set c1=c1 +(select max(a.c2) from v1 a +where a.c1 = t1.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +concat(old_c1,'->',c1) c3 Changed +1->3 1 * +1->3 2 * +1->3 3 * +2->4 4 * +2->4 5 * +2->4 6 * +2->4 7 * +2->4 8 * +11->13 11 * +11->13 12 * +11->13 13 * +12->14 14 * +12->14 15 * +12->14 16 * +12->14 17 * +12->14 18 * +21->23 21 * +21->23 22 * +21->23 23 * +22->24 24 * +22->24 25 * +22->24 26 * +22->24 27 * +22->24 28 * +31->33 31 * +31->33 32 * +31->33 33 * +32->34 34 * +32->34 35 * +32->34 36 * +32->34 37 * +32->34 38 * +truncate table t1; +insert into t1 select * from tmp; +# +# Update view +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using where +explain update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY a ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + (select max(a.c2) from t1 a +where a.c1 = v1.c1) +10 where c3 > 3; +affected rows: 7 +info: Rows matched: 7 Changed: 7 Warnings: 0 +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -874,20 +9256,55 @@ NULL 4 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +11->24 12 * +NULL 13 +NULL 14 +12->27 15 * +NULL 16 +NULL 17 +NULL 18 +21->35 21 * +NULL 22 +NULL 23 +22->38 24 * +NULL 25 +NULL 26 +NULL 27 +NULL 28 +31->45 31 * +NULL 32 +NULL 33 +32->48 34 * +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update through a view and using the view in subquery +# Update view with reference to the same view in subquery # -start transaction; -update v1 -set c1=c1 + 1 -where c1 <2 -and exists (select 'X' - from v1 a -where a.c1 = v1.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from v1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +update v1 set c1=c1 + 1 where c1 <2 +and exists (select 'X' from v1 a where a.c1 = v1.c1); affected rows: 1 info: Rows matched: 1 Changed: 1 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 1->2 2 * @@ -897,22 +9314,57 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update through a view and using the view in subquery +# Update view with EXISTS and reference to the same view in subquery # -start transaction; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from v1 where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update v1 +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using where +3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 32 Using where update v1 -set c1=(select max(a.c1)+10 -from v1 a -where a.c1 = v1.c1) -where c1 <10 -and exists (select 'X' - from v1 a -where a.c2 = v1.c2); +set c1=(select max(a.c1)+10 from v1 a where a.c1 = v1.c1) +where c1 <10 and exists (select 'X' from v1 a where a.c2 = v1.c2); affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 1->11 2 * @@ -922,41 +9374,107 @@ NULL 4 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# Update of the index or primary key (c3) +# Update with IN predicand over the updated table in WHERE # -start transaction; -explain update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL t1_c2 NULL NULL NULL 8 Using where -1 PRIMARY a ref t1_c2 t1_c2 10 test.t1.c2,test.t1.c1 1 Using index; FirstMatch(t1) -update t1 set c3=c3+10 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); -affected rows: 8 -info: Rows matched: 8 Changed: 8 Warnings: 0 +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +explain update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +1 PRIMARY a ALL NULL NULL NULL NULL 32 Using where; FirstMatch(t1) +update t1 set c3=c3+110 where c2 in (select distinct a.c2 from t1 a where t1.c1=a.c1); +affected rows: 32 +info: Rows matched: 32 Changed: 32 Warnings: 0 select c3 from t1; c3 -11 -14 -12 -15 -13 -16 -17 -18 -rollback; -# -# update with a limit -# -start transaction; +111 +112 +113 +114 +115 +116 +117 +118 +121 +122 +123 +124 +125 +126 +127 +128 +131 +132 +133 +134 +135 +136 +137 +138 +141 +142 +143 +144 +145 +146 +147 +148 +truncate table t1; +insert into t1 select * from tmp; +# +# Update with a limit +# +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3) -limit 2; +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) limit 2; affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed 1->1 1 1->2 2 * @@ -966,19 +9484,55 @@ NULL 5 NULL 6 NULL 7 NULL 8 -rollback; +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +NULL 37 +NULL 38 +truncate table t1; +insert into t1 select * from tmp; # -# update with a limit and an order by +# Update with a limit and an order by # -start transaction; +analyze table t1 persistent for all; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze note The storage engine for the table doesn't support analyze +explain select * from t1 order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using filesort +explain update t1 +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) +order by c3 desc limit 2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 32 Using filesort +2 DEPENDENT SUBQUERY a eq_ref PRIMARY PRIMARY 4 test.t1.c3 1 update t1 -set c1=(select a.c3 -from t1 a -where a.c3 = t1.c3) +set c1=(select a.c3 from t1 a where a.c3 = t1.c3) order by c3 desc limit 2; affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -select concat(old_c1,'->',c1),c3, case when c1 != old_c1 then '*' else ' ' end "Changed" from t1 ; +select concat(old_c1,'->',c1),c3, +case when c1 != old_c1 then '*' else ' ' end "Changed" from t1; concat(old_c1,'->',c1) c3 Changed NULL 1 NULL 2 @@ -986,58 +9540,357 @@ NULL 3 NULL 4 NULL 5 NULL 6 -2->7 7 * -2->8 8 * -rollback; +NULL 7 +NULL 8 +NULL 11 +NULL 12 +NULL 13 +NULL 14 +NULL 15 +NULL 16 +NULL 17 +NULL 18 +NULL 21 +NULL 22 +NULL 23 +NULL 24 +NULL 25 +NULL 26 +NULL 27 +NULL 28 +NULL 31 +NULL 32 +NULL 33 +NULL 34 +NULL 35 +NULL 36 +32->37 37 * +32->38 38 * +truncate table t1; +insert into t1 select * from tmp; # Update with error "Subquery returns more than 1 row" update t1 set c2=(select c2 from t1); ERROR 21000: Subquery returns more than 1 row -# Update with error "Subquery returns more than 1 row" and order by +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +# Update with error "Subquery returns more than 1 row" +# and order by update t1 set c2=(select c2 from t1) order by c3; ERROR 21000: Subquery returns more than 1 row -Duplicate value on update a primary key -start transaction; -update t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +# Duplicate value on update a primary key +update t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; ERROR 23000: Duplicate entry '0' for key 'PRIMARY' -rollback; -Duplicate value on update a primary key with ignore -start transaction; -update ignore t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; -affected rows: 4 -info: Rows matched: 4 Changed: 4 Warnings: 0 -rollback; -Duplicate value on update a primary key and limit -start transaction; -update t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 limit 2; +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key with ignore +update ignore t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; +affected rows: 20 +info: Rows matched: 20 Changed: 20 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key and limit +update t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 limit 2; ERROR 23000: Duplicate entry '0' for key 'PRIMARY' -rollback; -Duplicate value on update a primary key with ignore and limit -start transaction; -update ignore t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 limit 2; +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +# Duplicate value on update a primary key with ignore +# and limit +update ignore t1 set c3=0 +where exists (select 'X' from t1 a where a.c2 = t1.c2) +and c2 >= 3 limit 2; affected rows: 2 info: Rows matched: 2 Changed: 2 Warnings: 0 -rollback; +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 0 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; # Update no rows found -update t1 -set c1=10 -where c1 <2 -and exists (select 'X' - from t1 a -where a.c1 = t1.c1 + 10); -affected rows: 0 -info: Rows matched: 0 Changed: 0 Warnings: 0 +update t1 set c1=10 +where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1 + 10); +affected rows: 3 +info: Rows matched: 3 Changed: 3 Warnings: 0 +select c1,c2,c3 from t1; +c1 c2 c3 +10 1 1 +10 2 2 +10 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; # Update no rows changed drop trigger trg_t1; -start transaction; -update t1 -set c1=c1 -where c1 <2 -and exists (select 'X' - from t1 a -where a.c1 = t1.c1); +update t1 set c1=c1 +where c1 <2 and exists (select 'X' from t1 a where a.c1 = t1.c1); affected rows: 0 info: Rows matched: 3 Changed: 0 Warnings: 0 -rollback; +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; # # Check call of after trigger # @@ -1050,126 +9903,218 @@ SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg; end if; end; / -update t1 set c1=2 where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1); +update t1 set c1=2 +where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1); ERROR 45000: in after update trigger on 5 +select c1,c2,c3 from t1; +c1 c2 c3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 1 +2 1 4 +2 2 2 +2 2 5 +2 3 3 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; # # Check update with order by and after trigger # -update t1 set c1=2 where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1) order by t1.c2; +update t1 set c1=2 +where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1) +order by t1.c2, t1.c1; ERROR 45000: in after update trigger on 5 +select c1,c2,c3 from t1; +c1 c2 c3 +1 3 3 +11 2 12 +11 3 13 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 1 +2 1 11 +2 1 14 +2 1 4 +2 2 2 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; drop view v1; # # Check update on view with check option # create view v1 as select * from t1 where c2=2 with check option; -start transaction; update v1 set c2=3 where c1=1; ERROR 44000: CHECK OPTION failed `test`.`v1` -rollback; -start transaction; +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; update v1 set c2=(select max(c3) from v1) where c1=1; ERROR 44000: CHECK OPTION failed `test`.`v1` -rollback; -start transaction; +select c1,c2,c3 from t1; +c1 c2 c3 +1 1 1 +1 2 2 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 +2 1 4 +2 2 5 +2 3 6 +2 4 7 +2 5 8 +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1; -rollback; -drop view v1; -drop table t1; -# -# Test with a temporary table -# -create temporary table t1 (c1 integer, c2 integer, c3 integer) engine=InnoDb; -insert into t1(c1,c2,c3) values (1,1,1); -insert into t1(c1,c2,c3) values (1,2,2); -insert into t1(c1,c2,c3) values (1,3,3); -insert into t1(c1,c2,c3) values (2,1,4); -insert into t1(c1,c2,c3) values (2,2,5); -insert into t1(c1,c2,c3) values (2,3,6); -insert into t1(c1,c2,c3) values (2,4,7); -insert into t1(c1,c2,c3) values (2,5,8); -start transaction; -update t1 -set c1=(select a.c2 -from t1 a -where a.c3 = t1.c3) limit 3; -affected rows: 2 -info: Rows matched: 3 Changed: 2 Warnings: 0 -select * from t1 ; +select c1,c2,c3 from t1; c1 c2 c3 +0 2 2 1 1 1 -2 2 2 -3 3 3 +1 3 3 +11 1 11 +11 2 12 +11 3 13 +12 1 14 +12 2 15 +12 3 16 +12 4 17 +12 5 18 2 1 4 2 2 5 2 3 6 2 4 7 2 5 8 -rollback; +21 2 21 +21 3 22 +21 4 23 +22 2 24 +22 3 25 +22 4 26 +22 5 27 +22 6 28 +31 2 31 +31 3 32 +31 4 33 +32 2 34 +32 3 35 +32 4 36 +32 5 37 +32 6 38 +truncate table t1; +insert into t1 select * from tmp; +drop table tmp; +drop view v1; drop table t1; -# -# Test on dynamic columns (blob) -# -create table assets ( -item_name varchar(32) primary key, -- A common attribute for all items -dynamic_cols blob -- Dynamic columns will be stored here -); -INSERT INTO assets VALUES ('MariaDB T-shirt', COLUMN_CREATE('color', 'blue', 'size', 'XL')); -INSERT INTO assets VALUES ('Thinkpad Laptop', COLUMN_CREATE('color', 'black', 'price', 500)); -SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color FROM assets; -item_name color -MariaDB T-shirt blue -Thinkpad Laptop black -UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years') WHERE item_name='Thinkpad Laptop'; -SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets; -item_name color -MariaDB T-shirt NULL -Thinkpad Laptop 3 years -UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years') -WHERE item_name in (select b.item_name -from assets b -where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); -SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets; -item_name color -MariaDB T-shirt NULL -Thinkpad Laptop 4 years -UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', (select COLUMN_GET(b.dynamic_cols, 'color' as char) -from assets b -where assets.item_name = item_name)); -SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets; -item_name color -MariaDB T-shirt blue -Thinkpad Laptop black -drop table assets ; -# -# Test on fulltext columns -# -CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)) ENGINE=MyISAM; -INSERT INTO ft2(copy) VALUES -('MySQL vs MariaDB database'), -('Oracle vs MariaDB database'), -('PostgreSQL vs MariaDB database'), -('MariaDB overview'), -('Foreign keys'), -('Primary keys'), -('Indexes'), -('Transactions'), -('Triggers'); -SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); -copy -MySQL vs MariaDB database -Oracle vs MariaDB database -PostgreSQL vs MariaDB database -update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5))) from ft2 b WHERE MATCH(b.copy) AGAINST('database')) -where MATCH(copy) AGAINST('keys'); -SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword'); -copy -mykeyword Postg -mykeyword Postg -drop table ft2; +set @@default_storage_engine=@save_default_engine; # # Test with MyISAM # -create table t1 (old_c1 integer, old_c2 integer,c1 integer, c2 integer, c3 integer) engine=MyISAM; +create table t1 (old_c1 integer, +old_c2 integer, +c1 integer, +c2 integer, +c3 integer) engine=MyISAM; insert t1 (c1,c2,c3) select 0,seq,seq%10 from seq_1_to_500; insert t1 (c1,c2,c3) select 1,seq,seq%10 from seq_1_to_400; insert t1 (c1,c2,c3) select 2,seq,seq%10 from seq_1_to_300; @@ -1189,11 +10134,13 @@ count(*) 140 drop table t1; # -# Test error on multi_update conversion on view with order by or limit +# Test error on multi_update conversion on view +# with order by or limit # create table t1 (c1 integer) engine=InnoDb; create table t2 (c1 integer) engine=InnoDb; -create view v1 as select t1.c1 as "t1c1" ,t2.c1 as "t2c1" from t1,t2 where t1.c1=t2.c1; +create view v1 as select t1.c1 as "t1c1" ,t2.c1 as "t2c1" + from t1,t2 where t1.c1=t2.c1; update v1 set t1c1=2 order by 1; update v1 set t1c1=2 limit 1; drop table t1; diff --git a/mysql-test/main/update_use_source.test b/mysql-test/main/update_use_source.test index 3c32a25..ec27fa4 100644 --- a/mysql-test/main/update_use_source.test +++ b/mysql-test/main/update_use_source.test @@ -2,221 +2,55 @@ --source include/have_innodb.inc --source include/no_valgrind_without_big.inc -create table t1 (old_c1 integer, old_c2 integer,c1 integer, c2 integer, c3 integer) engine=InnoDB STATS_PERSISTENT=0; -create view v1 as select * from t1 where c2=2; -delimiter /; -create trigger trg_t1 before update on t1 for each row -begin - set new.old_c1=old.c1; - set new.old_c2=old.c2; -end; -/ -delimiter ;/ - -insert into t1(c1,c2,c3) values (1,1,1); -insert into t1(c1,c2,c3) values (1,2,2); -insert into t1(c1,c2,c3) values (1,3,3); -insert into t1(c1,c2,c3) values (2,1,4); -insert into t1(c1,c2,c3) values (2,2,5); -insert into t1(c1,c2,c3) values (2,3,6); -insert into t1(c1,c2,c3) values (2,4,7); -insert into t1(c1,c2,c3) values (2,5,8); - -commit; -select * from t1; - ---echo Test without any index +set @save_default_engine=@@default_storage_engine; + +--echo ####################################### +--echo # # +--echo # Engine InnoDB # +--echo # # +--echo ####################################### +set global innodb_stats_persistent=1; +set default_storage_engine=InnoDB; --source include/update_use_source.inc - ---echo Test with an index on updated columns -create index t1_c2 on t1 (c2,c1); +--source include/update_use_source_ext.inc + +--echo ####################################### +--echo # # +--echo # Engine Aria # +--echo # # +--echo ####################################### +set default_storage_engine=Aria; --source include/update_use_source.inc - ---echo Test with an index on updated columns -create index t1_c3 on t1 (c3); +--source include/update_use_source_ext.inc + +--echo ####################################### +--echo # # +--echo # Engine MyISAM # +--echo # # +--echo ####################################### +set default_storage_engine=MyISAM; --source include/update_use_source.inc - ---echo Test with a primary key on updated columns -drop index t1_c3 on t1; -alter table t1 add primary key (c3); +--source include/update_use_source_ext.inc + +--echo ####################################### +--echo # # +--echo # Engine MEMORY # +--echo # # +--echo ####################################### +set default_storage_engine=MEMORY; --source include/update_use_source.inc ---echo # Update with error "Subquery returns more than 1 row" ---error ER_SUBQUERY_NO_1_ROW -update t1 set c2=(select c2 from t1); - ---echo # Update with error "Subquery returns more than 1 row" and order by ---error ER_SUBQUERY_NO_1_ROW -update t1 set c2=(select c2 from t1) order by c3; - --- echo Duplicate value on update a primary key -start transaction; ---error ER_DUP_ENTRY -update t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; -rollback; - --- echo Duplicate value on update a primary key with ignore -start transaction; ---enable_info ONCE -update ignore t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3; -rollback; - --- echo Duplicate value on update a primary key and limit -start transaction; ---error ER_DUP_ENTRY -update t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 limit 2; -rollback; - --- echo Duplicate value on update a primary key with ignore and limit -start transaction; ---enable_info ONCE -update ignore t1 set c3=0 where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3 limit 2; -rollback; - ---echo # Update no rows found ---enable_info ONCE -update t1 - set c1=10 - where c1 <2 - and exists (select 'X' - from t1 a - where a.c1 = t1.c1 + 10); - ---echo # Update no rows changed -drop trigger trg_t1; -start transaction; ---enable_info ONCE -update t1 - set c1=c1 - where c1 <2 - and exists (select 'X' - from t1 a - where a.c1 = t1.c1); -rollback; - ---echo # ---echo # Check call of after trigger ---echo # - -delimiter /; -create or replace trigger trg_t2 after update on t1 for each row -begin - declare msg varchar(100); - if (new.c3 = 5) then - set msg=concat('in after update trigger on ',new.c3); - SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = msg; - end if; -end; -/ -delimiter ;/ ---error 1644 -update t1 set c1=2 where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1); - ---echo # ---echo # Check update with order by and after trigger ---echo # - ---error 1644 -update t1 set c1=2 where c3 in (select distinct a.c3 from t1 a where a.c1=t1.c1) order by t1.c2; - -drop view v1; ---echo # ---echo # Check update on view with check option ---echo # - -create view v1 as select * from t1 where c2=2 with check option; - -start transaction; --- error 1369 -update v1 set c2=3 where c1=1; -rollback; - -start transaction; --- error 1369 -update v1 set c2=(select max(c3) from v1) where c1=1; -rollback; - -start transaction; -update v1 set c2=(select min(va.c3) from v1 va), c1=0 where c1=1; -rollback; - -drop view v1; -drop table t1; - ---echo # ---echo # Test with a temporary table ---echo # - -create temporary table t1 (c1 integer, c2 integer, c3 integer) engine=InnoDb; -insert into t1(c1,c2,c3) values (1,1,1); -insert into t1(c1,c2,c3) values (1,2,2); -insert into t1(c1,c2,c3) values (1,3,3); -insert into t1(c1,c2,c3) values (2,1,4); -insert into t1(c1,c2,c3) values (2,2,5); -insert into t1(c1,c2,c3) values (2,3,6); -insert into t1(c1,c2,c3) values (2,4,7); -insert into t1(c1,c2,c3) values (2,5,8); - -start transaction; ---enable_info ONCE -update t1 - set c1=(select a.c2 - from t1 a - where a.c3 = t1.c3) limit 3; -select * from t1 ; -rollback; -drop table t1; - ---echo # ---echo # Test on dynamic columns (blob) ---echo # - -create table assets ( - item_name varchar(32) primary key, -- A common attribute for all items - dynamic_cols blob -- Dynamic columns will be stored here -); -INSERT INTO assets VALUES ('MariaDB T-shirt', COLUMN_CREATE('color', 'blue', 'size', 'XL')); -INSERT INTO assets VALUES ('Thinkpad Laptop', COLUMN_CREATE('color', 'black', 'price', 500)); -SELECT item_name, COLUMN_GET(dynamic_cols, 'color' as char) AS color FROM assets; -UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '3 years') WHERE item_name='Thinkpad Laptop'; -SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets; -UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', '4 years') - WHERE item_name in (select b.item_name - from assets b - where COLUMN_GET(b.dynamic_cols, 'color' as char) ='black'); -SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets; - -UPDATE assets SET dynamic_cols=COLUMN_ADD(dynamic_cols, 'warranty', (select COLUMN_GET(b.dynamic_cols, 'color' as char) - from assets b - where assets.item_name = item_name)); -SELECT item_name, COLUMN_GET(dynamic_cols, 'warranty' as char) AS color FROM assets; -drop table assets ; - ---echo # ---echo # Test on fulltext columns ---echo # -CREATE TABLE ft2(copy TEXT,FULLTEXT(copy)) ENGINE=MyISAM; -INSERT INTO ft2(copy) VALUES - ('MySQL vs MariaDB database'), - ('Oracle vs MariaDB database'), - ('PostgreSQL vs MariaDB database'), - ('MariaDB overview'), - ('Foreign keys'), - ('Primary keys'), - ('Indexes'), - ('Transactions'), - ('Triggers'); -SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('database'); -update ft2 set copy = (select max(concat('mykeyword ',substr(b.copy,1,5))) from ft2 b WHERE MATCH(b.copy) AGAINST('database')) - where MATCH(copy) AGAINST('keys'); -SELECT * FROM ft2 WHERE MATCH(copy) AGAINST('mykeyword'); -drop table ft2; +set @@default_storage_engine=@save_default_engine; --echo # --echo # Test with MyISAM --echo # -create table t1 (old_c1 integer, old_c2 integer,c1 integer, c2 integer, c3 integer) engine=MyISAM; +create table t1 (old_c1 integer, + old_c2 integer, + c1 integer, + c2 integer, + c3 integer) engine=MyISAM; insert t1 (c1,c2,c3) select 0,seq,seq%10 from seq_1_to_500; insert t1 (c1,c2,c3) select 1,seq,seq%10 from seq_1_to_400; insert t1 (c1,c2,c3) select 2,seq,seq%10 from seq_1_to_300; @@ -232,12 +66,14 @@ drop table t1; --echo # ---echo # Test error on multi_update conversion on view with order by or limit +--echo # Test error on multi_update conversion on view +--echo # with order by or limit --echo # create table t1 (c1 integer) engine=InnoDb; create table t2 (c1 integer) engine=InnoDb; -create view v1 as select t1.c1 as "t1c1" ,t2.c1 as "t2c1" from t1,t2 where t1.c1=t2.c1; +create view v1 as select t1.c1 as "t1c1" ,t2.c1 as "t2c1" + from t1,t2 where t1.c1=t2.c1; # 'order by 1' should be considered as in 'select * from v1 order 1' update v1 set t1c1=2 order by 1; update v1 set t1c1=2 limit 1; diff --git a/mysql-test/suite/json/r/json_table.result b/mysql-test/suite/json/r/json_table.result index 900348d..ed385f8 100644 --- a/mysql-test/suite/json/r/json_table.result +++ b/mysql-test/suite/json/r/json_table.result @@ -1146,3 +1146,104 @@ ERROR 42000: You have an error in your SQL syntax; check the manual that corresp # # End of 10.9 tests # +# +# MDEV-29390: Improve coverage for UPDATE and DELETE statements in MTR test suites +# +# Multi-update with JSON_TABLE +create table t1 ( name varchar(10), +color varchar(10), +price decimal(8,2), +instock BOOLEAN); +insert into t1 values ("Laptop", "black", 20000, 1); +insert into t1 values ("Jacket", "brown", 5000, 1); +insert into t1 values ("Jeans", "blue", 5000, 1); +select * from t1; +name color price instock +Laptop black 20000.00 1 +Jacket brown 5000.00 1 +Jeans blue 5000.00 1 +set @json=' +[ + {"name":"Laptop", "color":"black", "price":"1000", "ordered":"3"}, + {"name":"Jeans", "color":"blue", "ordered":"0"}, + {"name":"Phone", "color":"red", "ordered":"0"} +]'; +select * from json_table(@json, '$[*]' +columns( +name varchar(10) path '$.name', +color varchar(10) path '$.color', +price decimal(8,2) path '$.price', +ordered boolean path '$.ordered' ) +) as jt; +name color price ordered +Laptop black 1000.00 3 +Jeans blue NULL 0 +Phone red NULL 0 +explain update t1, JSON_TABLE(@json,'$[*]' +COLUMNS ( +name varchar(10) path '$.name', +color varchar(10) path '$.color', +price decimal(8,2) path '$.price', +ordered boolean path '$.ordered' + )) AS jt1 +SET t1.instock=0 where t1.name=jt1.name and jt1.ordered=3; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 +1 SIMPLE jt1 ALL NULL NULL NULL NULL 40 Table function: json_table; Using where +update t1, JSON_TABLE(@json,'$[*]' +COLUMNS ( +name varchar(10) path '$.name', +color varchar(10) path '$.color', +price decimal(8,2) path '$.price', +ordered boolean path '$.ordered' + )) AS jt1 +SET t1.instock=0 where t1.name=jt1.name and jt1.ordered=2; +select * from t1; +name color price instock +Laptop black 20000.00 1 +Jacket brown 5000.00 1 +Jeans blue 5000.00 1 +explain update t1 +SET t1.instock=2 where t1.name in ( +select jt1.name from json_table(@json, '$[*]' +columns( +name varchar(10) path '$.name', +color varchar(10) path '$.color', +price decimal(8,2) path '$.price', +ordered boolean path '$.ordered' ) +) as jt1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY jt1 ALL NULL NULL NULL NULL 40 Table function: json_table; Using where; FirstMatch(t1) +update t1 +SET t1.instock=2 where t1.name in ( +select jt1.name from json_table(@json, '$[*]' +columns( +name varchar(10) path '$.name', +color varchar(10) path '$.color', +price decimal(8,2) path '$.price', +ordered boolean path '$.ordered' ) +) as jt1); +select * from t1; +name color price instock +Laptop black 20000.00 2 +Jacket brown 5000.00 1 +Jeans blue 5000.00 2 +update t1, JSON_TABLE(@json,'$[*]' +COLUMNS ( +name varchar(10) path '$.name', +color varchar(10) path '$.color', +price decimal(8,2) path '$.price', +ordered boolean path '$.ordered' + )) AS jt1 +SET t1.instock=0, jt1.ordered=1 where t1.name=jt1.name; +ERROR HY000: The target table jt1 of the UPDATE is not updatable +select * from t1; +name color price instock +Laptop black 20000.00 2 +Jacket brown 5000.00 1 +Jeans blue 5000.00 2 +drop table t1; +# +# End of 11.0 tests +# diff --git a/mysql-test/suite/json/t/json_table.test b/mysql-test/suite/json/t/json_table.test index 982922f..5a8fe98 100644 --- a/mysql-test/suite/json/t/json_table.test +++ b/mysql-test/suite/json/t/json_table.test @@ -997,3 +997,97 @@ COLUMNS --echo # --echo # End of 10.9 tests --echo # + +--echo # +--echo # MDEV-29390: Improve coverage for UPDATE and DELETE statements in MTR test suites +--echo # + +--echo # Multi-update with JSON_TABLE + +create table t1 ( name varchar(10), + color varchar(10), + price decimal(8,2), + instock BOOLEAN); + +insert into t1 values ("Laptop", "black", 20000, 1); +insert into t1 values ("Jacket", "brown", 5000, 1); +insert into t1 values ("Jeans", "blue", 5000, 1); + +select * from t1; + +set @json=' +[ + {"name":"Laptop", "color":"black", "price":"1000", "ordered":"3"}, + {"name":"Jeans", "color":"blue", "ordered":"0"}, + {"name":"Phone", "color":"red", "ordered":"0"} +]'; + +select * from json_table(@json, '$[*]' + columns( + name varchar(10) path '$.name', + color varchar(10) path '$.color', + price decimal(8,2) path '$.price', + ordered boolean path '$.ordered' ) +) as jt; + +explain update t1, JSON_TABLE(@json,'$[*]' + COLUMNS ( + name varchar(10) path '$.name', + color varchar(10) path '$.color', + price decimal(8,2) path '$.price', + ordered boolean path '$.ordered' + )) AS jt1 + SET t1.instock=0 where t1.name=jt1.name and jt1.ordered=3; + +update t1, JSON_TABLE(@json,'$[*]' + COLUMNS ( + name varchar(10) path '$.name', + color varchar(10) path '$.color', + price decimal(8,2) path '$.price', + ordered boolean path '$.ordered' + )) AS jt1 + SET t1.instock=0 where t1.name=jt1.name and jt1.ordered=2; + +select * from t1; + +explain update t1 + SET t1.instock=2 where t1.name in ( + select jt1.name from json_table(@json, '$[*]' + columns( + name varchar(10) path '$.name', + color varchar(10) path '$.color', + price decimal(8,2) path '$.price', + ordered boolean path '$.ordered' ) + ) as jt1); + + +update t1 + SET t1.instock=2 where t1.name in ( + select jt1.name from json_table(@json, '$[*]' + columns( + name varchar(10) path '$.name', + color varchar(10) path '$.color', + price decimal(8,2) path '$.price', + ordered boolean path '$.ordered' ) + ) as jt1); + +select * from t1; + + +-- error ER_NON_UPDATABLE_TABLE +update t1, JSON_TABLE(@json,'$[*]' + COLUMNS ( + name varchar(10) path '$.name', + color varchar(10) path '$.color', + price decimal(8,2) path '$.price', + ordered boolean path '$.ordered' + )) AS jt1 + SET t1.instock=0, jt1.ordered=1 where t1.name=jt1.name; + +select * from t1; + +drop table t1; + +--echo # +--echo # End of 11.0 tests +--echo # diff --git a/storage/connect/mysql-test/connect/r/upd.result b/storage/connect/mysql-test/connect/r/upd.result index 8faf0089..ad17f0f 100644 --- a/storage/connect/mysql-test/connect/r/upd.result +++ b/storage/connect/mysql-test/connect/r/upd.result @@ -1627,3 +1627,159 @@ serialno name sex title manager department secretary salary DROP PROCEDURE test.tst_up; DROP TABLE employee; SET sql_mode = DEFAULT; +# +# End of 10.10 tests +# +SET sql_mode = 'NO_ENGINE_SUBSTITUTION'; +CREATE TABLE t1 +( +name char(12) not null, +city char(11) not null, +birth date not null date_format='DD/MM/YYYY', +hired date not null date_format='DD/MM/YYYY' flag=36 +) ENGINE=CONNECT TABLE_TYPE=FIX FILE_NAME='boys.txt' ENDING=1; +CREATE TABLE t2 ( +_id INT(2) NOT NULL, +name_first CHAR(9) NOT NULL JPATH='$.name.first', +name_aka CHAR(4) DEFAULT NULL JPATH='$.name.aka', +name_last CHAR(10) NOT NULL JPATH='$.name.last', +title CHAR(12) DEFAULT NULL, +birth CHAR(20) DEFAULT NULL, +death CHAR(20) DEFAULT NULL, +contribs CHAR(50) NOT NULL JPATH='$.contribs', +awards_award CHAR(42) DEFAULT NULL JPATH='$.awards.award', +awards_year CHAR(4) DEFAULT NULL JPATH='$.awards.year', +awards_by CHAR(38) DEFAULT NULL JPATH='$.awards.by' +) ENGINE=CONNECT TABLE_TYPE=JSON FILE_NAME='bios.json'; +# Multi-update +select t1.name, t1.city from t1; +name city +John Boston +Henry Boston +George San Jose +Sam Chicago +James Dallas +Bill Boston +select t2._id, t2.name_first, t2.name_aka, t2.name_last from t2; +_id name_first name_aka name_last +1 John NULL Backus +2 John NULL McCarthy +3 Grace NULL Hopper +4 Kristen NULL Nygaard +5 Ole-Johan NULL Dahl +6 Guido NULL van Rossum +7 Dennis NULL Ritchie +8 Yukihiro Matz Matsumoto +9 James NULL Gosling +10 Martin NULL Odersky +select t1.name, t2.name_last, t2.name_aka, t1.city from t1, t2 where t1.name=t2.name_first and t1.birth +BETWEEN '1992-01-01' and '1995-01-01'; +name name_last name_aka city +James Gosling NULL Dallas +explain update t1, t2 +set t1.city='Washington', t2.name_aka='von' where t1.name=t2.name_first and t1.birth +BETWEEN '1992-01-01' and '1995-01-01'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using where +update t1, t2 +set t1.city='Washington', t2.name_aka='von' where t1.name=t2.name_first and t1.birth +BETWEEN '1992-01-01' and '1995-01-01'; +select t1.name, t2.name_last, t2.name_aka, t1.city from t1, t2 where t1.name=t2.name_first and t1.birth +BETWEEN '1992-01-01' and '1995-01-01'; +name name_last name_aka city +James Gosling von Washington +# Conversion to multi-update +select t1.name, t1.city from t1; +name city +John Boston +Henry Boston +George San Jose +Sam Chicago +James Washington +Bill Boston +explain update t1 +set t1.city='New York' where t1.name in (select t2.name_first from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 6 +1 PRIMARY t2 ALL NULL NULL NULL NULL 10 Using where; FirstMatch(t1) +update t1 +set t1.city='New York' where t1.name in (select t2.name_first from t2); +select t1.name, t1.city from t1; +name city +John New York +Henry Boston +George San Jose +Sam Chicago +James New York +Bill Boston +select t1.name, t1.city from t1 where t1.name in (select a.name from t1 as a where a.birth +BETWEEN '1981-01-01' and '1982-01-01'); +name city +George San Jose +explain update t1 set t1.city='Los Angeles' where t1.name in (select a.name from t1 as a where a.birth +BETWEEN '1981-01-01' and '1982-01-01'); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 6 +1 PRIMARY a ALL NULL NULL NULL NULL 6 Using where; FirstMatch(t1) +update t1 set t1.city='Los Angeles' where t1.name in (select a.name from t1 as a where a.birth +BETWEEN '1981-01-01' and '1982-01-01'); +select t1.name, t1.city from t1 where t1.name in (select a.name from t1 as a where a.birth +BETWEEN '1981-01-01' and '1982-01-01'); +name city +George Los Angeles +# Multi-delete +explain delete t1.*, t2.* from t1, t2 where t1.name=t2.name_first and t1.birth +BETWEEN '1992-01-01' and '1995-01-01'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using where +delete t1.*, t2.* from t1, t2 where t1.name=t2.name_first and t1.birth +BETWEEN '1992-01-01' and '1995-01-01'; +select t1.name, t1.city from t1; +name city +John New York +Henry Boston +George Los Angeles +Sam Chicago +Bill Boston +select t2._id, t2.name_first, t2.name_aka, t2.name_last from t2; +_id name_first name_aka name_last +1 John NULL Backus +2 John NULL McCarthy +3 Grace NULL Hopper +4 Kristen NULL Nygaard +5 Ole-Johan NULL Dahl +6 Guido NULL van Rossum +7 Dennis NULL Ritchie +8 Yukihiro Matz Matsumoto +10 Martin NULL Odersky +# Conversion to multi-delete +explain delete from t1 where t1.name in (select t2.name_first from t2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 5 +1 PRIMARY t2 ALL NULL NULL NULL NULL 9 Using where; FirstMatch(t1) +delete from t1 where t1.name in (select t2.name_first from t2); +select t1.name, t1.city from t1; +name city +Henry Boston +George Los Angeles +Sam Chicago +Bill Boston +explain delete from t1 where t1.name in (select a.name from t1 as a where a.birth +BETWEEN '1981-01-01' and '1982-01-01'); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 +1 PRIMARY a ALL NULL NULL NULL NULL 4 Using where; FirstMatch(t1) +delete from t1 where t1.name in (select a.name from t1 as a where a.birth +BETWEEN '1981-01-01' and '1982-01-01'); +select t1.name, t1.city from t1; +name city +Henry Boston +Sam Chicago +Bill Boston +drop tables t1, t2; +SET sql_mode = DEFAULT; +# +# End of 11.0 tests +# diff --git a/storage/connect/mysql-test/connect/t/upd.test b/storage/connect/mysql-test/connect/t/upd.test index 28b566b..0372a9a 100644 --- a/storage/connect/mysql-test/connect/t/upd.test +++ b/storage/connect/mysql-test/connect/t/upd.test @@ -155,3 +155,99 @@ DROP TABLE employee; SET sql_mode = DEFAULT; --remove_file $MYSQLD_DATADIR/test/employee.dat + +--echo # +--echo # End of 10.10 tests +--echo # + +--copy_file $MTR_SUITE_DIR/std_data/boys.txt $MYSQLD_DATADIR/test/boys.txt +--copy_file $MTR_SUITE_DIR/std_data/bios.json $MYSQLD_DATADIR/test/bios.json + +SET sql_mode = 'NO_ENGINE_SUBSTITUTION'; + +CREATE TABLE t1 +( + name char(12) not null, + city char(11) not null, + birth date not null date_format='DD/MM/YYYY', + hired date not null date_format='DD/MM/YYYY' flag=36 +) ENGINE=CONNECT TABLE_TYPE=FIX FILE_NAME='boys.txt' ENDING=1; + +CREATE TABLE t2 ( + _id INT(2) NOT NULL, + name_first CHAR(9) NOT NULL JPATH='$.name.first', + name_aka CHAR(4) DEFAULT NULL JPATH='$.name.aka', + name_last CHAR(10) NOT NULL JPATH='$.name.last', + title CHAR(12) DEFAULT NULL, + birth CHAR(20) DEFAULT NULL, + death CHAR(20) DEFAULT NULL, + contribs CHAR(50) NOT NULL JPATH='$.contribs', + awards_award CHAR(42) DEFAULT NULL JPATH='$.awards.award', + awards_year CHAR(4) DEFAULT NULL JPATH='$.awards.year', + awards_by CHAR(38) DEFAULT NULL JPATH='$.awards.by' +) ENGINE=CONNECT TABLE_TYPE=JSON FILE_NAME='bios.json'; + +--echo # Multi-update + +select t1.name, t1.city from t1; +select t2._id, t2.name_first, t2.name_aka, t2.name_last from t2; + +let $c1 = where t1.name=t2.name_first and t1.birth + BETWEEN '1992-01-01' and '1995-01-01'; + +eval select t1.name, t2.name_last, t2.name_aka, t1.city from t1, t2 $c1; +eval explain update t1, t2 + set t1.city='Washington', t2.name_aka='von' $c1; +eval update t1, t2 + set t1.city='Washington', t2.name_aka='von' $c1; +eval select t1.name, t2.name_last, t2.name_aka, t1.city from t1, t2 $c1; + +--echo # Conversion to multi-update + +let $c2 = where t1.name in (select t2.name_first from t2); + +select t1.name, t1.city from t1; +eval explain update t1 + set t1.city='New York' $c2; +eval update t1 + set t1.city='New York' $c2; +select t1.name, t1.city from t1; + +let $c3 = where t1.name in (select a.name from t1 as a where a.birth + BETWEEN '1981-01-01' and '1982-01-01'); + +eval select t1.name, t1.city from t1 $c3; +eval explain update t1 set t1.city='Los Angeles' $c3; +eval update t1 set t1.city='Los Angeles' $c3; +eval select t1.name, t1.city from t1 $c3; + +--echo # Multi-delete + +eval explain delete t1.*, t2.* from t1, t2 $c1; +eval delete t1.*, t2.* from t1, t2 $c1; + +select t1.name, t1.city from t1; +select t2._id, t2.name_first, t2.name_aka, t2.name_last from t2; + +--echo # Conversion to multi-delete + +eval explain delete from t1 $c2; +eval delete from t1 $c2; + +select t1.name, t1.city from t1; + +eval explain delete from t1 $c3; +eval delete from t1 $c3; + +select t1.name, t1.city from t1; + +drop tables t1, t2; + +SET sql_mode = DEFAULT; + +--remove_file $MYSQLD_DATADIR/test/boys.txt +--remove_file $MYSQLD_DATADIR/test/bios.json + +--echo # +--echo # End of 11.0 tests +--echo #

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[Commits] 70bfa51: MDEV-30539 EXPLAIN EXTENDED: no message with query for DML statements
by IgorBabaev 14 Mar '23

14 Mar '23

revision-id: 70bfa51d7e5096ea6bac5ac7971427875ca4bc89 (mariadb-10.4.27-113-g70bfa51) parent(s): ccec9b1de95a66b7597bc30e0a60bd61866f225d author: Igor Babaev committer: Igor Babaev timestamp: 2023-03-14 12:59:33 -0700 message: MDEV-30539 EXPLAIN EXTENDED: no message with query for DML statements Preliminary patch. --- mysql-test/main/explain_non_select.result | 4 + mysql-test/main/multi_update.result | 2 +- mysql-test/main/multi_update.test | 2 +- .../main/myisam_explain_non_select_all.result | 138 +++++++++ mysql-test/main/opt_trace.result | 2 +- mysql-test/main/ps.result | 4 + sql/sql_delete.cc | 2 + sql/sql_explain.cc | 19 +- sql/sql_explain.h | 2 +- sql/sql_insert.cc | 6 +- sql/sql_lex.cc | 2 + sql/sql_lex.h | 6 + sql/sql_parse.cc | 20 +- sql/sql_select.cc | 326 ++++++++++++++++++--- sql/sql_update.cc | 10 +- sql/table.h | 2 + 16 files changed, 490 insertions(+), 57 deletions(-) diff --git a/mysql-test/main/explain_non_select.result b/mysql-test/main/explain_non_select.result index 111b4c8..d60f10f 100644 --- a/mysql-test/main/explain_non_select.result +++ b/mysql-test/main/explain_non_select.result @@ -157,9 +157,13 @@ id select_type table partitions type possible_keys key key_len ref rows Extra explain extended update t2 set b=3 where a in (3,4); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`b` = 3 where `test`.`t2`.`a` in (3,4) explain extended delete from t2 where a in (3,4); id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`a` in (3,4) drop table t1,t2; # # Check the special case where partition pruning removed all partitions diff --git a/mysql-test/main/multi_update.result b/mysql-test/main/multi_update.result index d6cf9ba..222c592 100644 --- a/mysql-test/main/multi_update.result +++ b/mysql-test/main/multi_update.result @@ -1253,7 +1253,7 @@ EXPLAIN DROP TABLES t1, t2; # End of 10.3 tests # -# MDEV-28538: multi-table UPDATE/DELETE with possible exists-to-in +# MDEV-30538: multi-table UPDATE/DELETE with possible exists-to-in # create table t1 (c1 int, c2 int, c3 int, index idx(c2)); insert into t1 values diff --git a/mysql-test/main/multi_update.test b/mysql-test/main/multi_update.test index 48e6250..329394e 100644 --- a/mysql-test/main/multi_update.test +++ b/mysql-test/main/multi_update.test @@ -1134,7 +1134,7 @@ DROP TABLES t1, t2; --echo # End of 10.3 tests --echo # ---echo # MDEV-28538: multi-table UPDATE/DELETE with possible exists-to-in +--echo # MDEV-30538: multi-table UPDATE/DELETE with possible exists-to-in --echo # create table t1 (c1 int, c2 int, c3 int, index idx(c2)); diff --git a/mysql-test/main/myisam_explain_non_select_all.result b/mysql-test/main/myisam_explain_non_select_all.result index 7f24cb4..6681a9d 100644 --- a/mysql-test/main/myisam_explain_non_select_all.result +++ b/mysql-test/main/myisam_explain_non_select_all.result @@ -17,6 +17,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a < 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = 10 where `test`.`t1`.`a` < 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -60,6 +62,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a < 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` < 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -103,6 +107,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 USING t1 WHERE a = 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t1` where `test`.`t1`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -150,6 +156,8 @@ EXPLAIN EXTENDED UPDATE t1, t2 SET t1.a = 10 WHERE t1.a = 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 update `test`.`t1` join `test`.`t2` set `test`.`t1`.`a` = 10 where `test`.`t1`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -200,6 +208,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = 10 where `test`.`t11`.`a` = 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -248,6 +258,8 @@ EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE 1 IN (SELECT 1 FROM t2 WHERE id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 2 SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(1,<exists>(/* select#2 */ select 1 from `test`.`t2` where `test`.`t2`.`b` < 3 and 1)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -300,6 +312,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where Warnings: Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1 +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`b` from `test`.`t2` where `test`.`t1`.`a` < 3 and <cache>(`test`.`t1`.`a`) = `test`.`t2`.`b`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -353,6 +366,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` semi join (`test`.`t2`) join `test`.`t2` set `test`.`t1`.`a` = 10 where `test`.`t2`.`b` < 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -405,6 +420,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = `test`.`t11`.`a` + 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -457,6 +474,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> system NULL NULL NULL NULL 1 100.00 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` set `test`.`t11`.`a` = `test`.`t11`.`a` + 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -511,6 +530,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t11 ALL NULL NULL NULL NULL 3 100.00 Using where 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` `t11` join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `t12` set `test`.`t11`.`a` = 10 where `test`.`t11`.`a` > 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -555,6 +576,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a > 1 LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 1 limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -598,6 +621,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` where 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -638,6 +663,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 USING t1 WHERE 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t1` where 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -678,6 +705,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a = 3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range a a 5 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` = 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 5 @@ -719,6 +748,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE a < 3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range a a 5 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` < 3 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 5 @@ -758,6 +789,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 0 order by `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -797,6 +830,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`a` > 0 order by `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -840,6 +875,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE (@a:= a) ORDER BY a LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 index NULL PRIMARY 4 NULL 1 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where @a:=`test`.`t1`.`a` order by `test`.`t1`.`a` limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -884,6 +921,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 ORDER BY a ASC, b ASC LIMIT 1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 Using filesort +Warnings: +Note 1003 delete from `test`.`t1` order by `test`.`t1`.`a`,`test`.`t1`.`b` limit 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -941,6 +980,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 100.00 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 8 test.t2.b2,test.t1.b1 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1`,`test`.`t2`,`test`.`t3` using `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a2` = `test`.`t1`.`a1` and `test`.`t3`.`a3` = `test`.`t2`.`b2` and `test`.`t3`.`b3` = `test`.`t1`.`b1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 13 @@ -993,6 +1034,8 @@ EXPLAIN EXTENDED UPDATE t1 SET a = 10 WHERE a IN (SELECT a FROM t2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where <cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1043,6 +1086,8 @@ EXPLAIN EXTENDED DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,<exists>(/* select#2 */ select `test`.`t2`.`a2` from `test`.`t2` where `test`.`t2`.`a2` > 2 and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`a2`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1088,6 +1133,8 @@ EXPLAIN EXTENDED DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using where 2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,<exists>(/* select#2 */ select `test`.`t2`.`a2` from `test`.`t2` where `test`.`t2`.`a2` > 2 and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`a2`)) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1132,6 +1179,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`i` = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -1175,6 +1224,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL 5 NULL Deleting all rows +Warnings: +Note 1003 delete from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -1221,6 +1272,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1267,6 +1320,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO t2 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 insert into `test`.`t2` select `test`.`t1`.`i` AS `i` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1311,6 +1366,8 @@ FLUSH TABLES; EXPLAIN EXTENDED REPLACE INTO t2 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 replaceinto `test`.`t2` select `test`.`t1`.`i` AS `i` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1351,6 +1408,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1`(i) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -1374,6 +1433,8 @@ FLUSH TABLES; EXPLAIN EXTENDED REPLACE INTO t1 SET i = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 replaceinto `test`.`t1`(i) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -1402,6 +1463,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`i` > 10 and `test`.`t1`.`i` <= 18 order by `test`.`t1`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1447,6 +1510,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`i` > 10 and `test`.`t1`.`i` <= 18 order by `test`.`t1`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1500,6 +1565,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1554,6 +1621,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1603,6 +1672,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1657,6 +1728,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -1712,6 +1785,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index_merge key1,key2 key1,key2 5,5 NULL 7 100.00 Using sort_union(key1,key2); Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`key1` < 13 or `test`.`t2`.`key2` < 14 order by `test`.`t2`.`key1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1765,6 +1840,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where +Warnings: +Note 1003 delete from `test`.`t2` where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1812,6 +1889,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 ORDER BY a, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using filesort +Warnings: +Note 1003 delete from `test`.`t2` order by `test`.`t2`.`a`,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1866,6 +1945,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t2 ORDER BY a DESC, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 6 NULL 5 100.00 +Warnings: +Note 1003 delete from `test`.`t2` order by `test`.`t2`.`a` desc,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -1915,6 +1996,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -1963,6 +2046,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -2017,6 +2102,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2072,6 +2159,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 15 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2122,6 +2211,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2176,6 +2267,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`d` = 10 where `test`.`t2`.`b` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`c` limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 8 @@ -2231,6 +2324,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET i = 123 WHERE key1 < 13 or key2 < 14 ORDER BY key1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index_merge key1,key2 key1,key2 5,5 NULL 7 100.00 Using sort_union(key1,key2); Using where; Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`i` = 123 where `test`.`t2`.`key1` < 13 or `test`.`t2`.`key2` < 14 order by `test`.`t2`.`key1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2284,6 +2379,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 range PRIMARY PRIMARY 4 NULL 5 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`a` = 10 where `test`.`t2`.`i` > 10 and `test`.`t2`.`i` <= 18 order by `test`.`t2`.`i` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -2332,6 +2429,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET c = 10 ORDER BY a, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 26 100.00 Using filesort +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`c` = 10 order by `test`.`t2`.`a`,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2387,6 +2486,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t2 SET c = 10 ORDER BY a DESC, b DESC LIMIT 5; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 index NULL a 6 NULL 5 100.00 Using buffer +Warnings: +Note 1003 update `test`.`t2` set `test`.`t2`.`c` = 10 order by `test`.`t2`.`a` desc,`test`.`t2`.`b` desc limit 5 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2439,6 +2540,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET c2 = 0 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range c1_idx c1_idx 2 NULL 2 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`c2` = 0 where `test`.`t1`.`c1_idx` = 'y' order by `test`.`t1`.`pk` desc limit 2 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2485,6 +2588,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range c1_idx c1_idx 2 NULL 2 100.00 Using where; Using filesort +Warnings: +Note 1003 delete from `test`.`t1` where `test`.`t1`.`c1_idx` = 'y' order by `test`.`t1`.`pk` desc limit 2 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2534,6 +2639,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+10 WHERE a > 34; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 10 where `test`.`t1`.`a` > 34 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -2581,6 +2688,8 @@ EXPLAIN EXTENDED UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 system NULL NULL NULL NULL 0 0.00 Const row not found 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` set NULL = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2624,6 +2733,8 @@ EXPLAIN EXTENDED UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10 W id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 system NULL NULL NULL NULL 0 0.00 Const row not found 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 update `test`.`t1` set NULL = 10 where `test`.`t1`.`c3` = 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2676,6 +2787,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t2 ALL IDX NULL NULL NULL 2 100.00 Using where Warnings: Note 1276 Field or reference 'test.t1.f1' of SELECT #2 was resolved in SELECT #1 +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`f2` = (/* select#2 */ select max(`test`.`t2`.`f4`) from `test`.`t2` where `test`.`t2`.`f3` = `test`.`t1`.`f1`) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 7 @@ -2747,6 +2859,8 @@ EXPLAIN EXTENDED UPDATE v1 SET a = 1 WHERE a > 0; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t11 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t12 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` `t11` join `test`.`t1` `t12` set `test`.`t11`.`a` = 1 where `test`.`t11`.`a` > 0 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -2792,6 +2906,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 1 SIMPLE t11 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t12 ALL NULL NULL NULL NULL 2 100.00 +Warnings: +Note 1003 update `test`.`t1` join `test`.`t1` `t11` join `test`.`t1` `t12` set `test`.`t11`.`a` = 1 where `test`.`t11`.`a` = `test`.`t1`.`a` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -2841,6 +2957,8 @@ FLUSH TABLES; EXPLAIN EXTENDED DELETE FROM v1 WHERE a < 4; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ delete from `test`.`t1` where `test`.`t1`.`a` < 4 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -2892,6 +3010,8 @@ EXPLAIN EXTENDED DELETE v1 FROM t2, v1 WHERE t2.x = v1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 Using where 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.x 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t2` join `test`.`t1` where `test`.`t1`.`a` = `test`.`t2`.`x` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2943,6 +3063,8 @@ EXPLAIN EXTENDED DELETE v1 FROM t2, v1 WHERE t2.x = v1.a; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 Using where 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.x 1 100.00 +Warnings: +Note 1003 delete from `test`.`t1` using `test`.`t2` join `test`.`t1` where `test`.`t1`.`a` = `test`.`t2`.`x` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 6 @@ -2987,6 +3109,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO v1 VALUES (10); id select_type table type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 ALL NULL NULL NULL NULL NULL 100.00 NULL +Warnings: +Note 1003 insert into `test`.`t1`(x) values (10) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 2 @@ -3027,6 +3151,8 @@ FLUSH TABLES; EXPLAIN EXTENDED INSERT INTO v1 SELECT * FROM t1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 system NULL NULL NULL NULL 0 0.00 Const row not found +Warnings: +Note 1003 insert into `test`.`t2`(x) /* select#1 */ select NULL AS `a` from `test`.`t1` # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3084,6 +3210,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where 2 DEPENDENT SUBQUERY <derived3> index_subquery key0 key0 5 func 2 100.00 3 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` set `test`.`t1`.`a` = 10 where <in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in (temporary) on key0))) # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3140,6 +3268,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 3 100.00 3 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` semi join ((/* select#3 */ select `test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`b` limit 2,2) `x`) join `test`.`t2` set `test`.`t1`.`a` = 10 where 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3198,6 +3328,8 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 3 100.00 4 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 Using filesort 2 DERIVED t2 ALL NULL NULL NULL NULL 3 100.00 +Warnings: +Note 1003 /* select#1 */ update `test`.`t1` semi join ((/* select#4 */ select `test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`b` limit 2,2) `x`) join (/* select#2 */ select `test`.`t2`.`b` AS `b` from `test`.`t2`) `y` set `test`.`t1`.`a` = 10 where 1 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 4 @@ -3248,6 +3380,8 @@ JOIN t1 AS a12 ON a12.c1 = a11.c1 id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) DROP TABLE t1, t2, t3; #73 CREATE TABLE t1 (id INT); @@ -3276,6 +3410,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+1 WHERE a>10; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using buffer +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 1 where `test`.`t1`.`a` > 10 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 @@ -3315,6 +3451,8 @@ FLUSH TABLES; EXPLAIN EXTENDED UPDATE t1 SET a=a+1 WHERE a>10 ORDER BY a+20; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using filesort +Warnings: +Note 1003 update `test`.`t1` set `test`.`t1`.`a` = `test`.`t1`.`a` + 1 where `test`.`t1`.`a` > 10 order by `test`.`t1`.`a` + 20 # Status of EXPLAIN EXTENDED query Variable_name Value Handler_read_key 3 diff --git a/mysql-test/main/opt_trace.result b/mysql-test/main/opt_trace.result index a343d59..a8b391f 100644 --- a/mysql-test/main/opt_trace.result +++ b/mysql-test/main/opt_trace.result @@ -3766,7 +3766,7 @@ explain delete t0,t1 from t0, t1 where t0.a=t1.a and t1.a<3 { "select_id": 1, "steps": [ { - "expanded_query": "select NULL AS `NULL` from t0 join t1 where t0.a = t1.a and t1.a < 3" + "expanded_query": "delete from t0,t1 using t0 join t1 where t0.a = t1.a and t1.a < 3" } ] } diff --git a/mysql-test/main/ps.result b/mysql-test/main/ps.result index 673b18c..408b1ec 100644 --- a/mysql-test/main/ps.result +++ b/mysql-test/main/ps.result @@ -5566,11 +5566,15 @@ EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 F id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) PREPARE stmt FROM "EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 FROM t1 AS a11 STRAIGHT_JOIN t2 AS a21 ON a21.c2 = a11.c1 JOIN t1 AS a12 ON a12.c1 = a11.c1 ) d1 )"; EXECUTE stmt; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 0 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ update `test`.`t3` set `test`.`t3`.`c3` = (/* select#2 */ select count(NULL) from `test`.`t1` `a11` straight_join `test`.`t2` `a21` join `test`.`t1` `a12` where 0) DEALLOCATE PREPARE stmt; DROP TABLE t1, t2, t3; # diff --git a/sql/sql_delete.cc b/sql/sql_delete.cc index 1b3fa30..776dfff 100644 --- a/sql/sql_delete.cc +++ b/sql/sql_delete.cc @@ -1084,6 +1084,8 @@ int mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, DBUG_RETURN(TRUE); select_lex->fix_prepare_information(thd, conds, &fake_conds); + if (!thd->lex->upd_del_where) + thd->lex->upd_del_where= *conds; DBUG_RETURN(FALSE); } diff --git a/sql/sql_explain.cc b/sql/sql_explain.cc index 70e3009..6b76db8 100644 --- a/sql/sql_explain.cc +++ b/sql/sql_explain.cc @@ -161,7 +161,7 @@ void Explain_query::query_plan_ready() Send EXPLAIN output to the client. */ -int Explain_query::send_explain(THD *thd) +int Explain_query::send_explain(THD *thd, bool extended) { select_result *result; LEX *lex= thd->lex; @@ -174,8 +174,22 @@ int Explain_query::send_explain(THD *thd) if (thd->lex->explain_json) print_explain_json(result, thd->lex->analyze_stmt); else + { res= print_explain(result, lex->describe, thd->lex->analyze_stmt); - + if (extended) + { + char buff[1024]; + String str(buff,(uint32) sizeof(buff), system_charset_info); + str.length(0); + /* + The warnings system requires input in utf8, @see + mysqld_show_warnings(). + */ + lex->unit.print(&str, QT_EXPLAIN_EXTENDED); + push_warning(thd, Sql_condition::WARN_LEVEL_NOTE, + ER_YES, str.c_ptr_safe()); + } + } if (res) result->abort_result_set(); else @@ -185,6 +199,7 @@ int Explain_query::send_explain(THD *thd) } + /* The main entry point to print EXPLAIN of the entire query */ diff --git a/sql/sql_explain.h b/sql/sql_explain.h index 7b5042b..3add404 100644 --- a/sql/sql_explain.h +++ b/sql/sql_explain.h @@ -474,7 +474,7 @@ class Explain_query : public Sql_alloc bool is_analyze); /* Send tabular EXPLAIN to the client */ - int send_explain(THD *thd); + int send_explain(THD *thd, bool extended); /* Return tabular EXPLAIN output as a text string */ bool print_explain_str(THD *thd, String *out_str, bool is_analyze); diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc index f31c9ea..9a76061 100644 --- a/sql/sql_insert.cc +++ b/sql/sql_insert.cc @@ -827,7 +827,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list, save_insert_query_plan(thd, table_list); if (thd->lex->describe) { - retval= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + retval= thd->lex->explain->send_explain(thd, extended); goto abort; } @@ -1250,7 +1251,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list, goto abort; if (thd->lex->analyze_stmt) { - retval= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + retval= thd->lex->explain->send_explain(thd, extended); goto abort; } DBUG_PRINT("info", ("touched: %llu copied: %llu updated: %llu deleted: %llu", diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index e14d9f7..e7689a9 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -780,6 +780,8 @@ void LEX::start(THD *thd_arg) frame_bottom_bound= NULL; win_spec= NULL; + upd_del_where= NULL; + vers_conditions.empty(); period_conditions.empty(); diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 769b1750..6170637 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -1417,6 +1417,10 @@ class st_select_lex: public st_select_lex_node } bool setup_ref_array(THD *thd, uint order_group_num); void print(THD *thd, String *str, enum_query_type query_type); + void print_item_list(THD *thd, String *str, enum_query_type query_type); + void print_set_clause(THD *thd, String *str, enum_query_type query_type); + void print_on_duplicate_key_clause(THD *thd, String *str, + enum_query_type query_type); static void print_order(String *str, ORDER *order, enum_query_type query_type); @@ -3493,6 +3497,8 @@ struct LEX: public Query_tables_list Window_frame_bound *frame_bottom_bound; Window_spec *win_spec; + Item *upd_del_where; + /* System Versioning */ vers_select_conds_t vers_conditions; vers_select_conds_t period_conditions; diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 1f1962a..c495ae2 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -4744,7 +4744,10 @@ mysql_execute_command(THD *thd) } if (!res && (explain || lex->analyze_stmt)) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } /* revert changes for SP */ MYSQL_INSERT_SELECT_DONE(res, (ulong) thd->get_row_count_func()); @@ -4813,7 +4816,10 @@ mysql_execute_command(THD *thd) if (thd->lex->analyze_stmt || thd->lex->describe) { if (!res) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } delete sel_result; @@ -4875,7 +4881,10 @@ mysql_execute_command(THD *thd) else { if (lex->describe || lex->analyze_stmt) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } multi_delete_error: delete result; @@ -6463,7 +6472,10 @@ static bool execute_sqlcom_select(THD *thd, TABLE_LIST *all_tables) thd->protocol= save_protocol; } if (!res) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } } } diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 2c12d1c..7fabb1c 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -305,6 +305,9 @@ static Item **get_sargable_cond(JOIN *join, TABLE *table); bool is_eq_cond_injected_for_split_opt(Item_func_eq *eq_item); +void print_list_item(String *str, List_item *list, + enum_query_type query_type); + #ifndef DBUG_OFF /* @@ -27981,6 +27984,162 @@ void TABLE_LIST::print(THD *thd, table_map eliminated_tables, String *str, } } +enum explainable_cmd_type +{ + SELECT_CMD, INSERT_CMD, REPLACE_CMD, UPDATE_CMD, DELETE_CMD, NO_CMD +}; + +static +const char * const explainable_cmd_name []= +{ + "select ", + "insert ", + "replace ", + "update ", + "delete ", +}; + +static +char const *get_explainable_cmd_name(enum explainable_cmd_type cmd) +{ + return explainable_cmd_name[cmd]; +} + +static +enum explainable_cmd_type get_explainable_cmd_type(THD *thd) +{ + switch (thd->lex->sql_command) { + case SQLCOM_SELECT: + return SELECT_CMD; + case SQLCOM_INSERT: + case SQLCOM_INSERT_SELECT: + return INSERT_CMD; + case SQLCOM_REPLACE: + case SQLCOM_REPLACE_SELECT: + return REPLACE_CMD; + case SQLCOM_UPDATE: + case SQLCOM_UPDATE_MULTI: + return UPDATE_CMD; + case SQLCOM_DELETE: + case SQLCOM_DELETE_MULTI: + return DELETE_CMD; + default: + return SELECT_CMD; + } +} + + +void TABLE_LIST::print_leaf_tables(THD *thd, String *str, + enum_query_type query_type) +{ + if (merge_underlying_list) + { + for (TABLE_LIST *tbl= merge_underlying_list; tbl; tbl= tbl->next_local) + tbl->print_leaf_tables(thd, str, query_type); + } + else + print(thd, 0, str, query_type); +} + + +void st_select_lex::print_item_list(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + /* + outer_select() can not be used here because it is for name resolution + and will return NULL at any end of name resolution chain (view/derived) + */ + bool top_level= (get_master()->get_master() == 0); + List_iterator_fast<Item> it(item_list); + Item *item; + while ((item= it++)) + { + if (first) + first= 0; + else + str->append(','); + + if ((is_subquery_function() && item->is_autogenerated_name) || + !item->name.str) + { + /* + Do not print auto-generated aliases in subqueries. It has no purpose + in a view definition or other contexts where the query is printed. + */ + item->print(str, query_type); + } + else + { + /* + Do not print illegal names (if it is not top level SELECT). + Top level view checked (and correct name are assigned), + other cases of top level SELECT are not important, because + it is not "table field". + */ + if (top_level || + !item->is_autogenerated_name || + !check_column_name(item->name.str)) + item->print_item_w_name(str, query_type); + else + item->print(str, query_type); + } + } +} + + +void st_select_lex::print_set_clause(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + /* + outer_select() can not be used here because it is for name resolution + and will return NULL at any end of name resolution chain (view/derived) + */ + List_iterator_fast<Item> it(item_list); + List_iterator_fast<Item> vt(thd->lex->value_list); + Item *item; + Item *val; + while ((item= it++, val= vt++ )) + { + if (first) + { + str->append(STRING_WITH_LEN(" set ")); + first= 0; + } + else + str->append(','); + + item->print(str, query_type); + str->append(STRING_WITH_LEN(" = ")); + val->print(str, query_type); + } +} + + +void st_select_lex::print_on_duplicate_key_clause(THD *thd, String *str, + enum_query_type query_type) +{ + bool first= 1; + List_iterator_fast<Item> it(thd->lex->update_list); + List_iterator_fast<Item> vt(thd->lex->value_list); + Item *item; + Item *val; + while ((item= it++, val= vt++ )) + { + if (first) + { + str->append(STRING_WITH_LEN(" on duplicate key update ")); + first= 0; + } + else + str->append(','); + + item->print(str, query_type); + str->append(STRING_WITH_LEN(" = ")); + val->print(str, query_type); + } +} void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) { @@ -27998,6 +28157,61 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) return; } + bool top_level= (get_master()->get_master() == 0); + enum explainable_cmd_type sel_type= SELECT_CMD; + if (top_level) + sel_type= get_explainable_cmd_type(thd); + + if (sel_type == INSERT_CMD || sel_type == REPLACE_CMD) + { + str->append(STRING_WITH_LEN(get_explainable_cmd_name(sel_type))); + str->append(STRING_WITH_LEN("into ")); + TABLE_LIST *tbl= thd->lex->query_tables; + while (tbl->merge_underlying_list) + tbl= tbl->merge_underlying_list; + tbl->print(thd, 0, str, query_type); + if (thd->lex->field_list.elements) + { + str->append ('('); + List_iterator_fast<Item> it(thd->lex->field_list); + Item *item; + bool first= true; + while ((item= it++)) + { + if (first) + first= false; + else + str->append(','); + str->append(item->name); + } + str->append(')'); + } + + str->append(' '); + + if (thd->lex->sql_command == SQLCOM_INSERT || + thd->lex->sql_command == SQLCOM_REPLACE) + { + str->append(STRING_WITH_LEN("values ")); + bool is_first_elem= true; + List_iterator_fast<List_item> li(thd->lex->many_values); + List_item *list; + + while ((list= li++)) + { + if (is_first_elem) + is_first_elem= false; + else + str->append(','); + + print_list_item(str, list, query_type); + } + if (thd->lex->update_list.elements) + print_on_duplicate_key_clause(thd, str, query_type); + return; + } + } + if ((query_type & QT_SHOW_SELECT_NUMBER) && thd->lex->all_selects_list && thd->lex->all_selects_list->link_next && @@ -28021,7 +28235,10 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) str->append(" */ "); } - str->append(STRING_WITH_LEN("select ")); + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) + str->append(STRING_WITH_LEN("select ")); if (join && join->cleaned) { @@ -28067,57 +28284,66 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) } //Item List - bool first= 1; + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) + print_item_list(thd, str, query_type); /* - outer_select() can not be used here because it is for name resolution - and will return NULL at any end of name resolution chain (view/derived) + from clause + TODO: support USING/FORCE/IGNORE index */ - bool top_level= (get_master()->get_master() == 0); - List_iterator_fast<Item> it(item_list); - Item *item; - while ((item= it++)) + if (table_list.elements) { - if (first) - first= 0; - else - str->append(','); - - if ((is_subquery_function() && item->is_autogenerated_name) || - !item->name.str) + if (sel_type == SELECT_CMD || + sel_type == INSERT_CMD || + sel_type == REPLACE_CMD) { - /* - Do not print auto-generated aliases in subqueries. It has no purpose - in a view definition or other contexts where the query is printed. - */ - item->print(str, query_type); + str->append(STRING_WITH_LEN(" from ")); + /* go through join tree */ + print_join(thd, join? join->eliminated_tables: 0, str, &top_join_list, + query_type); } - else + if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + str->append(STRING_WITH_LEN(get_explainable_cmd_name(sel_type))); + if (sel_type == DELETE_CMD) { - /* - Do not print illegal names (if it is not top level SELECT). - Top level view checked (and correct name are assigned), - other cases of top level SELECT are not important, because - it is not "table field". - */ - if (top_level || - !item->is_autogenerated_name || - !check_column_name(item->name.str)) - item->print_item_w_name(str, query_type); + str->append(STRING_WITH_LEN(" from ")); + bool first= true; + for (TABLE_LIST *target_tbl= thd->lex->auxiliary_table_list.first; + target_tbl; + target_tbl= target_tbl->next_local) + { + if (first) + first= false; + else + str->append(','); + target_tbl->correspondent_table->print_leaf_tables(thd, str, + query_type); + } + + if (!first) + str->append(STRING_WITH_LEN(" using ")); + } + if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + { + if (join) + print_join(thd, 0, str, &top_join_list, query_type); else - item->print(str, query_type); + { + bool first= true; + List_iterator_fast<TABLE_LIST> li(leaf_tables); + TABLE_LIST *tbl; + while ((tbl= li++)) + { + if (first) + first= false; + else + str->append(','); + tbl->print(thd, 0, str, query_type); + } + } } } - - /* - from clause - TODO: support USING/FORCE/IGNORE index - */ - if (table_list.elements) - { - str->append(STRING_WITH_LEN(" from ")); - /* go through join tree */ - print_join(thd, join? join->eliminated_tables: 0, str, &top_join_list, query_type); - } else if (where) { /* @@ -28127,10 +28353,15 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) str->append(STRING_WITH_LEN(" from DUAL ")); } + if (sel_type == UPDATE_CMD) + print_set_clause(thd, str, query_type); + // Where Item *cur_where= where; if (join) cur_where= join->conds; + else if (sel_type == UPDATE_CMD || sel_type == DELETE_CMD) + cur_where= thd->lex->upd_del_where; if (cur_where || cond_value != Item::COND_UNDEF) { str->append(STRING_WITH_LEN(" where ")); @@ -28187,6 +28418,15 @@ void st_select_lex::print(THD *thd, String *str, enum_query_type query_type) else if (lock_type == TL_WRITE) str->append(" for update"); + if ((sel_type == INSERT_CMD || sel_type == REPLACE_CMD) && + thd->lex->update_list.elements) + print_on_duplicate_key_clause(thd, str, query_type); + + // returning clause + if (sel_type == DELETE_CMD && !item_list.elements) + { + print_item_list(thd, str, query_type); + } // PROCEDURE unsupported here } diff --git a/sql/sql_update.cc b/sql/sql_update.cc index a298071..834fa61 100644 --- a/sql/sql_update.cc +++ b/sql/sql_update.cc @@ -1371,7 +1371,8 @@ int mysql_update(THD *thd, goto err; emit_explain_and_leave: - int err2= thd->lex->explain->send_explain(thd); + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + int err2= thd->lex->explain->send_explain(thd, extended); delete select; free_underlaid_joins(thd, select_lex); @@ -1445,6 +1446,8 @@ bool mysql_prepare_update(THD *thd, TABLE_LIST *table_list, select_lex->fix_prepare_information(thd, conds, &fake_conds); + if (!thd->lex->upd_del_where) + thd->lex->upd_del_where= *conds; DBUG_RETURN(FALSE); } @@ -1974,7 +1977,10 @@ bool mysql_multi_update(THD *thd, TABLE_LIST *table_list, List<Item> *fields, else { if (thd->lex->describe || thd->lex->analyze_stmt) - res= thd->lex->explain->send_explain(thd); + { + bool extended= thd->lex->describe & DESCRIBE_EXTENDED; + res= thd->lex->explain->send_explain(thd, extended); + } } thd->abort_on_warning= 0; DBUG_RETURN(res); diff --git a/sql/table.h b/sql/table.h index c4b0d78..6f7f4e6 100644 --- a/sql/table.h +++ b/sql/table.h @@ -2708,6 +2708,8 @@ struct TABLE_LIST } void print(THD *thd, table_map eliminated_tables, String *str, enum_query_type query_type); + void print_leaf_tables(THD *thd, String *str, + enum_query_type query_type); bool check_single_table(TABLE_LIST **table, table_map map, TABLE_LIST *view); bool set_insert_values(MEM_ROOT *mem_root);

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