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Merge mhansson@bk-internal:/home/bk/mysql-5.1-opt

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into  linux-st28.site:/home/martin/mysql/src/5.1o-bug30596


sql/sql_select.cc:
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2007-08-28 18:17:44 +02:00
parent 8c31792cae 22440b5387
commit 53daf2e674
6 changed files with 229 additions and 4 deletions
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27
mysql-test/include/mix1.inc
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@ -969,6 +969,33 @@ 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
# Fix for BUG#19243 "wrong LAST_INSERT_ID() after ON DUPLICATE KEY