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Merge magare.gmz:/home/kgeorge/mysql/work/B27531-4.1-opt

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into  magare.gmz:/home/kgeorge/mysql/work/B27531-5.0-opt
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gkodinov/kgeorge@magare.gmz
2007-05-04 16:47:58 +03:00
parent 287ebed161 d11e1f248b
commit cead246f7a
3 changed files with 80 additions and 3 deletions
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mysql-test/t/join.test
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@ -333,6 +333,30 @@ select t1.i,t2.i,t3.i from t2 natural right join t3,t1 order by t1.i,t2.i,t3.i;
select t1.i,t2.i,t3.i from t2 right join t3 on (t2.i=t3.i),t1 order by t1.i,t2.i,t3.i;
drop table t1,t2,t3;
#
# Bug #27531: Query performance degredation in 4.1.22 and greater
#
CREATE TABLE t1 (a int, b int default 0, c int default 1);
INSERT INTO t1 (a) VALUES (1),(2),(3),(4),(5),(6),(7),(8);
INSERT INTO t1 (a) SELECT a + 8 FROM t1;
INSERT INTO t1 (a) SELECT a + 16 FROM t1;
CREATE TABLE t2 (a int, d int, e int default 0);
INSERT INTO t2 (a, d) VALUES (1,1),(2,2),(3,3),(4,4);
INSERT INTO t2 (a, d) SELECT a+4, a+4 FROM t2;
INSERT INTO t2 (a, d) SELECT a+8, a+8 FROM t2;
# should use join cache
EXPLAIN
SELECT STRAIGHT_JOIN t2.e FROM t1,t2 WHERE t2.d=1 AND t1.b=t2.e
ORDER BY t1.b, t1.c;
SELECT STRAIGHT_JOIN t2.e FROM t1,t2 WHERE t2.d=1 AND t1.b=t2.e
ORDER BY t1.b, t1.c;
DROP TABLE t1,t2;
# End of 4.1 tests
#