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Back-ported the test case for bug #12616253 from mariadb-5.3 that

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was actually a duplicate of LP bug #888456 fixed in mariadb-5.2.
This commit is contained in:
Igor Babaev
2012-01-14 00:02:02 -08:00
parent 4de7978a3f
commit 4b7919368e
2 changed files with 62 additions and 0 deletions
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21
mysql-test/t/subselect.test
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@@ -4022,4 +4022,25 @@ EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);
DROP TABLE t1;
--echo #
--echo # BUG#12616253 - WRONG RESULT WITH EXISTS(SUBQUERY) (MISSING ROWS)
--echo # (duplicate of LP bug #888456)
CREATE TABLE t1 (f1 varchar(1));
INSERT INTO t1 VALUES ('v'),('s');
CREATE TABLE t2 (f1_key varchar(1), KEY (f1_key));
INSERT INTO t2 VALUES ('j'),('v'),('c'),('m'),('d'),
('d'),('y'),('t'),('d'),('s');
EXPLAIN
SELECT table1.f1, table2.f1_key FROM t1 AS table1, t2 AS table2
WHERE EXISTS (SELECT DISTINCT f1_key FROM t2
WHERE f1_key != table2.f1_key AND f1_key >= table1.f1);
SELECT table1.f1, table2.f1_key FROM t1 AS table1, t2 AS table2
WHERE EXISTS (SELECT DISTINCT f1_key FROM t2
WHERE f1_key != table2.f1_key AND f1_key >= table1.f1);
DROP TABLE t1,t2;
--echo End of 5.2 tests