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Diffstat (limited to 'mysql-test/t/group_by.test')
| -rw-r--r-- | mysql-test/t/group_by.test | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/mysql-test/t/group_by.test b/mysql-test/t/group_by.test index 58bb4b3e268..5af78b924f8 100644 --- a/mysql-test/t/group_by.test +++ b/mysql-test/t/group_by.test @@ -447,3 +447,12 @@ INSERT INTO t1 VALUES (1,2),(2,3),(4,5),(3,5),(1,5),(23,5); SELECT i, COUNT(DISTINCT(i)) FROM t1 GROUP BY j ORDER BY NULL; explain SELECT i, COUNT(DISTINCT(i)) FROM t1 GROUP BY j ORDER BY NULL; 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; + |