diff options
author | Igor Babaev <igor@askmonty.org> | 2013-11-26 15:04:21 -0800 |
---|---|---|
committer | Igor Babaev <igor@askmonty.org> | 2013-11-26 15:04:21 -0800 |
commit | acc539a2c4a8ac591a641ad47c699305839997b8 (patch) | |
tree | 6fcefd36db6200a93090cad0303ac592efb348ac /mysql-test/r/selectivity_innodb.result | |
parent | 6774e86d836f83bf0c7f3a9f2facf15ad89f394e (diff) | |
download | mariadb-git-acc539a2c4a8ac591a641ad47c699305839997b8.tar.gz |
Added the test case for bug mdev-5200.
The bug was fixed by the patch applied to the 5.3 tree in the revision 3727.
Diffstat (limited to 'mysql-test/r/selectivity_innodb.result')
-rw-r--r-- | mysql-test/r/selectivity_innodb.result | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/mysql-test/r/selectivity_innodb.result b/mysql-test/r/selectivity_innodb.result index 9607bb98765..1dbd9b56079 100644 --- a/mysql-test/r/selectivity_innodb.result +++ b/mysql-test/r/selectivity_innodb.result @@ -1136,6 +1136,35 @@ Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; drop table t1; set use_stat_tables=@save_use_stat_tables; +# +# Bug mdev-5200: impossible where with a semijoin subquery +# when optimizer_use_condition_selectivity=2 +# +set use_stat_tables = 'preferably'; +set optimizer_use_condition_selectivity = 2; +CREATE TABLE t1 (i1 int) ENGINE=MyISAM; +INSERT INTO t1 VALUES (0), (1); +CREATE TABLE t2 (pk2 int, i2 int, c2 char(1), PRIMARY KEY(pk2)) ENGINE=MyISAM; +INSERT INTO t2 VALUES (1,8,'m'), (2,9,'b'); +CREATE TABLE t3 (c3 char(1), INDEX(c3)) ENGINE=MyISAM; +INSERT INTO t3 VALUES ('v'), ('c'); +ANALYZE TABLE t1,t2,t3; +Table Op Msg_type Msg_text +test.t1 analyze status OK +test.t2 analyze status OK +test.t3 analyze status OK +SELECT * FROM t1 +WHERE 2 IN ( SELECT pk2 FROM t2 LEFT JOIN t3 ON (c3 = c2 ) WHERE i2 = 3 ); +i1 +EXPLAIN EXTENDED +SELECT * FROM t1 +WHERE 2 IN ( SELECT pk2 FROM t2 LEFT JOIN t3 ON (c3 = c2 ) WHERE i2 = 3 ); +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 noticed after reading const tables +Warnings: +Note 1003 select `test`.`t1`.`i1` AS `i1` from `test`.`t1` semi join (`test`.`t2` left join `test`.`t3` on((`test`.`t3`.`c3` = 'b'))) where 0 +set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; +DROP TABLE t1,t2,t3; set use_stat_tables=@save_use_stat_tables; set optimizer_switch=@save_optimizer_switch_for_selectivity_test; SET SESSION STORAGE_ENGINE=DEFAULT; |