diff options
Diffstat (limited to 'mysql-test/t/subselect3.test')
| -rw-r--r-- | mysql-test/t/subselect3.test | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/mysql-test/t/subselect3.test b/mysql-test/t/subselect3.test index 14dbb72de7b..2f844c9cc21 100644 --- a/mysql-test/t/subselect3.test +++ b/mysql-test/t/subselect3.test @@ -571,3 +571,21 @@ SELECT (t1.id IN (SELECT t2.id FROM t2,t3 FROM t1; DROP TABLE t1,t2,t3; + +# +# Bug #22855: Optimizer doesn't rewrite NOT IN subselects to a correlated +# subquery +# +CREATE TABLE t1 (a INT NOT NULL); +INSERT INTO t1 VALUES (1),(-1), (65),(66); + +CREATE TABLE t2 (a INT UNSIGNED NOT NULL PRIMARY KEY); +INSERT INTO t2 VALUES (65),(66); + +SELECT a FROM t1 WHERE a NOT IN (65,66); +SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2); +EXPLAIN SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2); + +DROP TABLE t1; + +--echo End of 5.0 tests |