[Maria-developers] Rev 2790: MWL#90: Subqueries: Inside-out execution for non-semijoin materialized in file:///home/psergey/dev/maria-5.3-subqueries-r12/
At file:///home/psergey/dev/maria-5.3-subqueries-r12/ ------------------------------------------------------------ revno: 2790 revision-id: psergey@askmonty.org-20100406083401-36tcbqvit0wtilcx parent: psergey@askmonty.org-20100406081058-ihhw7esolj0mzc9a committer: Sergey Petrunya <psergey@askmonty.org> branch nick: maria-5.3-subqueries-r12 timestamp: Tue 2010-04-06 12:34:01 +0400 message: MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE - Update test results (checked, we get 0 because the subquery is actually evaluated by the EXPLAIN). === modified file 'mysql-test/r/myisam_mrr.result' --- a/mysql-test/r/myisam_mrr.result 2010-03-11 21:43:31 +0000 +++ b/mysql-test/r/myisam_mrr.result 2010-04-06 08:34:01 +0000 @@ -347,7 +347,7 @@ ); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE -2 SUBQUERY t2 ALL int_key int_key 5 3 33.33 Using index condition; Using filesort +2 SUBQUERY t2 ALL int_key int_key 5 0 0.00 Using index condition; Using filesort Warnings: Note 1003 select min(`test`.`t1`.`pk`) AS `MIN(t1.pk)` from `test`.`t1` where 0 DROP TABLE t1, t2;
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Sergey Petrunya