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Diffstat (limited to 'mysql-test/t/select.test')
| -rw-r--r-- | mysql-test/t/select.test | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test index 94e169821e9..c0e22cb8f4e 100644 --- a/mysql-test/t/select.test +++ b/mysql-test/t/select.test @@ -4372,4 +4372,21 @@ SELECT * FROM t1 WHERE (b = 1 OR a = 5) AND (b = 5 AND a = 5 OR 1 != 1); DROP TABLE t1; +--echo # +--echo # Bug mdev-4418: impossible multiple equality in OR formula +--echo # after row substitution +--echo # + +CREATE TABLE t1 (a int, b varchar(1)) ENGINE=MyISAM; +INSERT INTO t1 VALUES (0,'j'), (8,'v'); + +CREATE TABLE t2 (c varchar(1), d varchar(1)) ENGINE=MyISAM; +INSERT INTO t2 VALUES ('k','k'); + +EXPLAIN EXTENDED +SELECT * FROM t1, t2 WHERE c=b AND (1=2 OR ((b='h' OR a=136) AND d=b)); +SELECT * FROM t1, t2 WHERE c=b AND (1=2 OR ((b='h' OR a=136) AND d=b)); + +DROP TABLE t1,t2; + --echo End of 5.3 tests |