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Merge fix for BUG#6976 from 4.0

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sergefp@mysql.com 2004-12-11 20:13:43 +03:00
commit 2d9fae642c
2 changed files with 21 additions and 0 deletions
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12
mysql-test/r/group_by.result
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@ -638,3 +638,15 @@ alias
1,2
1
drop table t1;
create table t1 (a int);
insert into t1 values(null);
select min(a) is null from t1;
min(a) is null
1
select min(a) is null or null from t1;
min(a) is null or null
1
select 1 and min(a) is null from t1;
1 and min(a) is null
1
drop table t1;

9
mysql-test/t/group_by.test
View file

@ -465,3 +465,12 @@ select group_concat( distinct col1 ) as alias from t1
drop table t1;
#Test for BUG#6976: Aggregate functions have incorrect NULL-ness
create table t1 (a int);
insert into t1 values(null);
select min(a) is null from t1;
select min(a) is null or null from t1;
select 1 and min(a) is null from t1;
drop table t1;