Commit 35217aea authored by unknown's avatar unknown
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Merge fix for BUG#6976 from 4.0

parents 0a3590f6 b18e8c92

mysql-test/r/group_by.result

+12 −0
Original line number Diff line number Diff line
@@ -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;

mysql-test/t/group_by.test

+9 −0
Original line number Diff line number Diff line
@@ -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;