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Fixed vargrind problems in check_join_cache_usage().

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Merged the patch for bug 697557. Adjusted the results.
This commit is contained in:
Igor Babaev
2011-01-06 11:40:01 -08:00
parent 85523738b9 cb4fa7f401
commit ed2405788f
4 changed files with 47 additions and 23 deletions
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20
mysql-test/r/join_cache.result
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@@ -6952,4 +6952,24 @@ a a b
2 NULL 42
SET SESSION join_cache_level = DEFAULT;
DROP TABLE t1,t2;
#
# Bug #697557: hash join on a varchar field
#
CREATE TABLE t1 ( f1 varchar(10) , f2 int(11) , KEY (f1));
INSERT INTO t1 VALUES ('r',1), ('m',2);
CREATE TABLE t2 ( f1 varchar(10) , f2 int(11) , KEY (f1));
INSERT INTO t2 VALUES
('hgtofubn',1), ('GDOXZ',91), ('n',2), ('fggxgalh',88),
('hgtofu',1), ('GDO',101), ('n',3), ('fggxga',55),
('hgtofu',3), ('GDO',33), ('nn',3), ('fggxgarrr',77);
SET SESSION join_cache_level=3;
EXPLAIN
SELECT * FROM t1,t2 WHERE t2.f1 = t1.f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL f1 NULL NULL NULL 2 Using where
1 SIMPLE t2 hash f1 f1 13 test.t1.f1 12 Using join buffer (flat, BNLH join)
SELECT * FROM t1,t2 WHERE t2.f1 = t1.f1;
f1 f2 f1 f2
SET SESSION join_cache_level = DEFAULT;
DROP TABLE t1,t2;
set @@optimizer_switch=@save_optimizer_switch;