diff options
Diffstat (limited to 'mysql-test')
| -rw-r--r-- | mysql-test/r/join_outer.result | 17 | ||||
| -rw-r--r-- | mysql-test/t/join_outer.test | 13 |
2 files changed, 30 insertions, 0 deletions
diff --git a/mysql-test/r/join_outer.result b/mysql-test/r/join_outer.result index debec01fbdc..ae4d99e6241 100644 --- a/mysql-test/r/join_outer.result +++ b/mysql-test/r/join_outer.result @@ -667,3 +667,20 @@ left outer join t2 using (f2) left outer join t3 using (f3); Unknown column 'test.t2.f3' in 'on clause' drop table t1,t2,t3; +create table t1 (a1 int, a2 int); +create table t2 (b1 int not null, b2 int); +create table t3 (c1 int, c2 int); +insert into t1 values (1,2), (2,2), (3,2); +insert into t2 values (1,3), (2,3); +insert into t3 values (2,4), (3,4); +select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is null; +a1 a2 b1 b2 c1 c2 +1 2 1 3 NULL NULL +2 2 2 3 NULL NULL +3 2 NULL NULL 3 4 +explain select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is null; +table type possible_keys key key_len ref rows Extra +t1 ALL NULL NULL NULL NULL 3 +t2 ALL NULL NULL NULL NULL 2 +t3 ALL NULL NULL NULL NULL 2 +drop table t1, t2, t3; diff --git a/mysql-test/t/join_outer.test b/mysql-test/t/join_outer.test index ee7d55d2a4e..bed4d4b033b 100644 --- a/mysql-test/t/join_outer.test +++ b/mysql-test/t/join_outer.test @@ -437,3 +437,16 @@ select * from t1 left outer join t2 using (f2) left outer join t3 using (f3); drop table t1,t2,t3; + +create table t1 (a1 int, a2 int); +create table t2 (b1 int not null, b2 int); +create table t3 (c1 int, c2 int); + +insert into t1 values (1,2), (2,2), (3,2); +insert into t2 values (1,3), (2,3); +insert into t3 values (2,4), (3,4); + +select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is null; +explain select * from t1 left join t2 on b1 = a1 left join t3 on c1 = a1 and b1 is null; + +drop table t1, t2, t3; |