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Diffstat (limited to 'mysql-test/t/subselect.test')
| -rw-r--r-- | mysql-test/t/subselect.test | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test index e0e3ed1a14c..717871db61d 100644 --- a/mysql-test/t/subselect.test +++ b/mysql-test/t/subselect.test @@ -6072,6 +6072,33 @@ SELECT (SELECT MAX(sq.f2) FROM t1) FROM (SELECT * FROM t2) AS sq WHERE f2 = 2; --echo # drop table t1, t2; +--echo # +--echo # MDEV-13933: Wrong results in COUNT() query with EXISTS and exists_to_in +--echo # (5.5 test) +--echo # +SET @optimiser_switch_save= @@optimizer_switch; + +CREATE TABLE t1 (a INT NOT NULL); +INSERT INTO t1 VALUES (1),(1),(1),(5),(5); + +CREATE TABLE t2 (b INT); +INSERT INTO t2 VALUES (5),(1); + +CREATE TABLE t3 (c INT, KEY(c)); +INSERT INTO t3 VALUES (5),(5); + +SET optimizer_switch='semijoin=on'; +select t1.a from t1 where t1.a in (select `test`.`t2`.`b` from `test`.`t2`) +and t1.a in (select `test`.`t3`.`c` from `test`.`t3`); + +SET optimizer_switch='semijoin=off'; +select t1.a from t1 where t1.a in (select `test`.`t2`.`b` from `test`.`t2`) +and t1.a in (select `test`.`t3`.`c` from `test`.`t3`); + +SET @@optimizer_switch= @optimiser_switch_save; +DROP TABLE t1, t2, t3; + +--echo End of 5.5 tests --echo # End of 10.0 tests --echo # |