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join_outer.result, null.result, null.test, item_cmpfunc.h:

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Fixed inconsistency of values of used_tables_cache and
  const_item_cache for Item_func_isnull objects (bug #1990).
This commit is contained in:
igor@rurik.mysql.com
2003-12-01 13:59:09 -08:00
parent f266cdabab
commit dcbbbe6b94
4 changed files with 24 additions and 1 deletions
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11
mysql-test/r/null.result
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@ -142,3 +142,14 @@ a b c d
0 0000-00-00 00:00:00 0
0 0000-00-00 00:00:00 0
drop table t1;
create table t1 (a int not null, b int not null, index idx(a));
insert into t1 values
(1,1), (2,2), (3,3), (4,4), (5,5), (6,6),
(7,7), (8,8), (9,9), (10,10), (11,11), (12,12);
explain select * from t1 where a between 2 and 3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range idx idx 4 NULL 2 Using where
explain select * from t1 where a between 2 and 3 or b is null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range idx idx 4 NULL 2 Using where
drop table t1;