diff options
Diffstat (limited to 'mysql-test/t/subselect.test')
| -rw-r--r-- | mysql-test/t/subselect.test | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test index 4b2fd33abfd..d68e519e460 100644 --- a/mysql-test/t/subselect.test +++ b/mysql-test/t/subselect.test @@ -1167,3 +1167,14 @@ insert into t1 values (1,2),(3,4); select * from t1 up where exists (select * from t1 where t1.a=up.a); explain extended select * from t1 up where exists (select * from t1 where t1.a=up.a); drop table t1; + +# +# Test problem with NULL and derived tables (Bug #4097) +# + +CREATE TABLE t1 (id int(11) default NULL,name varchar(10) default NULL); +INSERT INTO t1 VALUES (1,'Tim'),(2,'Rebecca'),(3,NULL); +CREATE TABLE t2 (id int(11) default NULL, pet varchar(10) default NULL); +INSERT INTO t2 VALUES (1,'Fido'),(2,'Spot'),(3,'Felix'); +SELECT a.*, b.* FROM (SELECT * FROM t1) AS a JOIN t2 as b on a.id=b.id; +drop table t1,t2; |