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Merge mhansson@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

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into  linux-st28.site:/home/martin/mysql/src/bugx/my50-bugx
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mhansson/martin@linux-st28.site
2007-08-29 10:49:19 +02:00
parent a8c7e45067 a4d5d9204d
commit f672e5bca6
7 changed files with 168 additions and 3 deletions
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27
mysql-test/t/innodb_mysql.test
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@ -910,4 +910,31 @@ ROLLBACK;
ROLLBACK;
DROP TABLE t1;
#
# Bug#30596: GROUP BY optimization gives wrong result order
#
CREATE TABLE t1(
a INT,
b INT NOT NULL,
c INT NOT NULL,
d INT,
UNIQUE KEY (c,b)
) engine=innodb;
INSERT INTO t1 VALUES (1,1,1,50), (1,2,3,40), (2,1,3,4);
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d;
SELECT c,b,d FROM t1 GROUP BY c,b,d;
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
EXPLAIN SELECT c,b,d FROM t1 ORDER BY c,b,d;
SELECT c,b,d FROM t1 ORDER BY c,b,d;
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b;
SELECT c,b,d FROM t1 GROUP BY c,b;
EXPLAIN SELECT c,b FROM t1 GROUP BY c,b;
SELECT c,b FROM t1 GROUP BY c,b;
DROP TABLE t1;
--echo End of 5.0 tests