[Commits] 017adbeb394: MDEV-15475: Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed on EXPLAIN EXTENDED with constant table and view
revision-id: 017adbeb3940ac162dcb8dd99478375a37edec02 (mariadb-5.5.61-3-g017adbeb394) parent(s): 68ebfb31f215247d2fa08c8ed97a320191afc179 author: Oleksandr Byelkin committer: Oleksandr Byelkin timestamp: 2018-08-08 19:44:04 +0200 message: MDEV-15475: Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed on EXPLAIN EXTENDED with constant table and view Print constant ISNULL fireld independent. Fix of printing of view FRM and CREATE VIEW output --- mysql-test/r/derived_view.result | 6 +++--- mysql-test/r/func_isnull.result | 20 ++++++++++++++++++++ mysql-test/r/subselect_mat.result | 6 +++--- mysql-test/r/subselect_sj_mat.result | 6 +++--- mysql-test/t/func_isnull.test | 16 ++++++++++++++++ sql/item.cc | 2 +- sql/item_cmpfunc.cc | 13 +++++++++++++ sql/item_cmpfunc.h | 1 + sql/sql_lex.cc | 2 +- sql/sql_show.cc | 2 +- 10 files changed, 62 insertions(+), 12 deletions(-) diff --git a/mysql-test/r/derived_view.result b/mysql-test/r/derived_view.result index f7062473a3f..12811ebc6b3 100644 --- a/mysql-test/r/derived_view.result +++ b/mysql-test/r/derived_view.result @@ -1101,7 +1101,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used Warnings: -Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t3` where (not(<expr_cache><6,5>(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(7))) and trigcond(((<cache>(5) = 5) or isnull(5))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5)))))))) +Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t3` where (not(<expr_cache><6,5>(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(/*always not null*/ 1))) and trigcond(((<cache>(5) = 5) or isnull(/*always not null*/ 1))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5)))))))) SELECT t.a,t.b FROM t3 RIGHT JOIN ((SELECT * FROM t1) AS t, t2) ON t2.b != 0 WHERE (t.a,t.b) NOT IN (SELECT 7, 5); a b @@ -1115,7 +1115,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00 3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used Warnings: -Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t3` where (not(<expr_cache><6,5>(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(7))) and trigcond(((<cache>(5) = 5) or isnull(5))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5)))))))) +Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t3` where (not(<expr_cache><6,5>(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(/*always not null*/ 1))) and trigcond(((<cache>(5) = 5) or isnull(/*always not null*/ 1))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5)))))))) SELECT t.a,t.b FROM t3 RIGHT JOIN (v1 AS t, t2) ON t2.b != 0 WHERE (t.a,t.b) NOT IN (SELECT 7, 5); a b @@ -1129,7 +1129,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used Warnings: -Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t3` where (not(<expr_cache><6,5>(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(7))) and trigcond(((<cache>(5) = 5) or isnull(5))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5)))))))) +Note 1003 select 6 AS `a`,5 AS `b` from `test`.`t3` where (not(<expr_cache><6,5>(<in_optimizer>((6,5),<exists>(select 7,5 having (trigcond(((<cache>(6) = 7) or isnull(/*always not null*/ 1))) and trigcond(((<cache>(5) = 5) or isnull(/*always not null*/ 1))) and trigcond(<is_not_null_test>(7)) and trigcond(<is_not_null_test>(5)))))))) DROP VIEW v1; DROP TABLE t1,t2,t3; # diff --git a/mysql-test/r/func_isnull.result b/mysql-test/r/func_isnull.result index 88c5bfd5468..a97d4a67939 100644 --- a/mysql-test/r/func_isnull.result +++ b/mysql-test/r/func_isnull.result @@ -106,5 +106,25 @@ Note 1003 select `test`.`t2`.`d1` AS `d1`,`test`.`t1`.`d1` AS `d1` from `test`.` DROP VIEW v1; DROP TABLE t1,t2; # +# MDEV-15475: Assertion `!table || (!table->read_set || +# bitmap_is_set(table->read_set, field_index))' +# failed on EXPLAIN EXTENDED with constant table and view +# +CREATE TABLE t1 (pk INT PRIMARY KEY) ENGINE=MyISAM; +CREATE VIEW v1 AS SELECT * FROM t1; +INSERT INTO t1 VALUES (1); +EXPLAIN EXTENDED SELECT ISNULL(pk) FROM v1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select isnull(/*always not null*/ 1) AS `ISNULL(pk)` from dual +EXPLAIN EXTENDED SELECT IFNULL(pk,0) FROM v1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 +Warnings: +Note 1003 select ifnull(1,0) AS `IFNULL(pk,0)` from dual +DROP VIEW v1; +DROP TABLE t1; +# # End of 5.5 tests # diff --git a/mysql-test/r/subselect_mat.result b/mysql-test/r/subselect_mat.result index eca3b760b65..efc348a26ce 100644 --- a/mysql-test/r/subselect_mat.result +++ b/mysql-test/r/subselect_mat.result @@ -499,7 +499,7 @@ 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 NULL NULL NULL NULL NULL NULL NULL NULL No tables used Warnings: -Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull('1 - 01')) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull('2 - 01')) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))) +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull(/*always not null*/ 1)) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull(/*always not null*/ 1)) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))) select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01'); a1 a2 1 - 01 2 - 01 @@ -509,7 +509,7 @@ 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 NULL NULL NULL NULL NULL NULL NULL NULL No tables used Warnings: -Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull('1 - 01')) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull('2 - 01')) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))) +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull(/*always not null*/ 1)) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull(/*always not null*/ 1)) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))) select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual); a1 a2 1 - 01 2 - 01 @@ -1896,7 +1896,7 @@ 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; Using join buffer (flat, BNL join) 2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00 Warnings: -Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from <materialize> (select max(`test`.`t2`.`c`) from `test`.`t2`) join `test`.`t1` where ((`test`.`t1`.`b` = 7) and (`test`.`t1`.`a` = `<subquery2>`.`MAX(c)`) and (<cache>(isnull(`<subquery2>`.`MAX(c)`)) or (`<subquery2>`.`MAX(c)` = 7))) +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from <materialize> (select max(`test`.`t2`.`c`) from `test`.`t2`) join `test`.`t1` where ((`test`.`t1`.`b` = 7) and (`test`.`t1`.`a` = `<subquery2>`.`MAX(c)`) and (<cache>(isnull(/*always not null*/ 1)) or (`<subquery2>`.`MAX(c)` = 7))) SELECT * FROM t1 WHERE a IN (SELECT MAX(c) FROM t2) AND b=7 AND (a IS NULL OR a=b); a b diff --git a/mysql-test/r/subselect_sj_mat.result b/mysql-test/r/subselect_sj_mat.result index 180c182a51a..fd9435e8a39 100644 --- a/mysql-test/r/subselect_sj_mat.result +++ b/mysql-test/r/subselect_sj_mat.result @@ -520,7 +520,7 @@ 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 NULL NULL NULL NULL NULL NULL NULL NULL No tables used Warnings: -Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull('1 - 01')) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull('2 - 01')) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))) +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull(/*always not null*/ 1)) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull(/*always not null*/ 1)) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))) select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01'); a1 a2 1 - 01 2 - 01 @@ -530,7 +530,7 @@ 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 NULL NULL NULL NULL NULL NULL NULL NULL No tables used Warnings: -Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull('1 - 01')) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull('2 - 01')) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))) +Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull(/*always not null*/ 1)) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull(/*always not null*/ 1)) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))) select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual); a1 a2 1 - 01 2 - 01 @@ -1934,7 +1934,7 @@ 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; Using join buffer (flat, BNL join) 2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00 Warnings: -Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from <materialize> (select max(`test`.`t2`.`c`) from `test`.`t2`) join `test`.`t1` where ((`test`.`t1`.`b` = 7) and (`test`.`t1`.`a` = `<subquery2>`.`MAX(c)`) and (<cache>(isnull(`<subquery2>`.`MAX(c)`)) or (`<subquery2>`.`MAX(c)` = 7))) +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from <materialize> (select max(`test`.`t2`.`c`) from `test`.`t2`) join `test`.`t1` where ((`test`.`t1`.`b` = 7) and (`test`.`t1`.`a` = `<subquery2>`.`MAX(c)`) and (<cache>(isnull(/*always not null*/ 1)) or (`<subquery2>`.`MAX(c)` = 7))) SELECT * FROM t1 WHERE a IN (SELECT MAX(c) FROM t2) AND b=7 AND (a IS NULL OR a=b); a b diff --git a/mysql-test/t/func_isnull.test b/mysql-test/t/func_isnull.test index 4c59fa3cbe8..7d1a7e83a1a 100644 --- a/mysql-test/t/func_isnull.test +++ b/mysql-test/t/func_isnull.test @@ -83,6 +83,22 @@ SELECT * FROM t2 LEFT JOIN v1 ON t2.d1=v1.d1 WHERE v1.d1 IS NULL; DROP VIEW v1; DROP TABLE t1,t2; + +--echo # +--echo # MDEV-15475: Assertion `!table || (!table->read_set || +--echo # bitmap_is_set(table->read_set, field_index))' +--echo # failed on EXPLAIN EXTENDED with constant table and view +--echo # + +CREATE TABLE t1 (pk INT PRIMARY KEY) ENGINE=MyISAM; +CREATE VIEW v1 AS SELECT * FROM t1; +INSERT INTO t1 VALUES (1); +EXPLAIN EXTENDED SELECT ISNULL(pk) FROM v1; +EXPLAIN EXTENDED SELECT IFNULL(pk,0) FROM v1; +# Cleanup +DROP VIEW v1; +DROP TABLE t1; + --echo # --echo # End of 5.5 tests --echo # diff --git a/sql/item.cc b/sql/item.cc index 33c35f8c3e0..0cf4864326f 100644 --- a/sql/item.cc +++ b/sql/item.cc @@ -6845,7 +6845,7 @@ Item *Item_field::update_value_transformer(uchar *select_arg) void Item_field::print(String *str, enum_query_type query_type) { if (field && field->table->const_table && - !(query_type & QT_NO_DATA_EXPANSION)) + !(query_type & (QT_NO_DATA_EXPANSION | QT_VIEW_INTERNAL))) { print_value(str); return; diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index 6fb650b975b..d4a2c767b15 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -4850,6 +4850,19 @@ Item *and_expressions(Item *a, Item *b, Item **org_item) } +void Item_func_isnull::print(String *str, enum_query_type query_type) +{ + str->append(func_name()); + str->append('('); + if (const_item() && !args[0]->maybe_null && + !(query_type & (QT_NO_DATA_EXPANSION | QT_VIEW_INTERNAL))) + str->append("/*always not null*/ 1"); + else + args[0]->print(str, query_type); + str->append(')'); +} + + longlong Item_func_isnull::val_int() { DBUG_ASSERT(fixed == 1); diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h index 3c8cc71370d..c4e6a53dd6b 100644 --- a/sql/item_cmpfunc.h +++ b/sql/item_cmpfunc.h @@ -1389,6 +1389,7 @@ class Item_func_isnull :public Item_bool_func const_item_cache= args[0]->const_item(); } } + virtual void print(String *str, enum_query_type query_type); table_map not_null_tables() const { return 0; } optimize_type select_optimize() const { return OPTIMIZE_NULL; } Item *neg_transformer(THD *thd); diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 2bf1216ec34..cfbde25314b 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -2414,7 +2414,7 @@ void st_select_lex::print_order(String *str, { if (order->counter_used) { - if (query_type != QT_VIEW_INTERNAL) + if (!(query_type & QT_VIEW_INTERNAL)) { char buffer[20]; size_t length= my_snprintf(buffer, 20, "%d", order->counter); diff --git a/sql/sql_show.cc b/sql/sql_show.cc index 06d5a6f570a..db33a9de781 100644 --- a/sql/sql_show.cc +++ b/sql/sql_show.cc @@ -2085,7 +2085,7 @@ view_store_create_info(THD *thd, TABLE_LIST *table, String *buff) We can't just use table->query, because our SQL_MODE may trigger a different syntax, like when ANSI_QUOTES is defined. */ - table->view->unit.print(buff, QT_ORDINARY); + table->view->unit.print(buff, QT_VIEW_INTERNAL); if (table->with_check != VIEW_CHECK_NONE) {
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Oleksandr Byelkin