diff options
Diffstat (limited to 'mysql-test/r/join_outer.result')
| -rw-r--r-- | mysql-test/r/join_outer.result | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/mysql-test/r/join_outer.result b/mysql-test/r/join_outer.result index c7bfa7797bd..77e23e4c788 100644 --- a/mysql-test/r/join_outer.result +++ b/mysql-test/r/join_outer.result @@ -1308,4 +1308,63 @@ WHERE (COALESCE(t1.f1, t2.f1), f3) IN ((1, 3), (2, 2)); f1 f2 f3 f1 f2 1 NULL 3 NULL NULL DROP TABLE t1, t2; +# +# Bug#57024: Poor performance when conjunctive condition over the outer +# table is used in the on condition of an outer join +# +create table t1 (a int); +insert into t1 values (NULL), (NULL), (NULL), (NULL); +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 select * from t1; +insert into t1 values (4), (2), (1), (3); +create table t2 like t1; +insert into t2 select if(t1.a is null, 10, t1.a) from t1; +create table t3 (a int, b int, index idx(a)); +insert into t3 values (1, 100), (3, 301), (4, 402), (1, 102), (1, 101); +analyze table t1,t2,t3; +Table Op Msg_type Msg_text +test.t1 analyze status OK +test.t2 analyze status OK +test.t3 analyze status OK +flush status; +select sum(t3.b) from t1 left join t3 on t3.a=t1.a and t1.a is not null; +sum(t3.b) +1006 +show status like "handler_read%"; +Variable_name Value +Handler_read_first 0 +Handler_read_key 4 +Handler_read_next 5 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 1048581 +flush status; +select sum(t3.b) from t2 left join t3 on t3.a=t2.a and t2.a <> 10; +sum(t3.b) +1006 +show status like "handler_read%"; +Variable_name Value +Handler_read_first 0 +Handler_read_key 4 +Handler_read_next 5 +Handler_read_prev 0 +Handler_read_rnd 0 +Handler_read_rnd_next 1048581 +drop table t1,t2,t3; End of 5.1 tests |