diff options
Diffstat (limited to 'mysql-test/t/join_outer.test')
| -rw-r--r-- | mysql-test/t/join_outer.test | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/mysql-test/t/join_outer.test b/mysql-test/t/join_outer.test index 0a29b4cb325..708a618f10f 100644 --- a/mysql-test/t/join_outer.test +++ b/mysql-test/t/join_outer.test @@ -851,3 +851,19 @@ SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL; show status like 'Handler_read%'; DROP TABLE t1,t2; + +# +# Bug 28571: outer join with false on condition over constant tables +# + +CREATE TABLE t1 (c int PRIMARY KEY, e int NOT NULL); +INSERT INTO t1 VALUES (1,0), (2,1); +CREATE TABLE t2 (d int PRIMARY KEY); +INSERT INTO t2 VALUES (1), (2), (3); + +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d IS NULL; +SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d IS NULL; +SELECT * FROM t1 LEFT JOIN t2 ON e<>0 WHERE c=1 AND d<=>NULL; + +DROP TABLE t1,t2; + |