diff --git a/mysql-test/r/group_by.result b/mysql-test/r/group_by.result index 022b8eff7e8..f92b3ea4f4d 100644 --- a/mysql-test/r/group_by.result +++ b/mysql-test/r/group_by.result @@ -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; diff --git a/mysql-test/t/group_by.test b/mysql-test/t/group_by.test index 59983594c32..c0447b06303 100644 --- a/mysql-test/t/group_by.test +++ b/mysql-test/t/group_by.test @@ -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; +