diff options
Diffstat (limited to 'mysql-test/r/subselect_sj.result')
| -rw-r--r-- | mysql-test/r/subselect_sj.result | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/mysql-test/r/subselect_sj.result b/mysql-test/r/subselect_sj.result index cc0f3b27e38..643034f452d 100644 --- a/mysql-test/r/subselect_sj.result +++ b/mysql-test/r/subselect_sj.result @@ -3107,4 +3107,58 @@ id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t2 range idx idx 5 NULL 2 Using where; Using index; Using join buffer (flat, BNL join) drop table t1,t2; set optimizer_switch= @tmp_mdev12675; +# +# MDEV-12817: subquery NOT subject to semi-join optimizations +# in ON expression of INNER JOIN +# +CREATE TABLE t1 (c1 int) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (c2 int) ENGINE=MyISAM; +INSERT INTO t2 VALUES (3),(4); +CREATE TABLE t3 (c3 int) ENGINE=MyISAM; +INSERT INTO t3 VALUES (5),(6); +CREATE TABLE t4 (c4 int) ENGINE=MyISAM; +INSERT INTO t4 VALUES (7),(8); +SELECT c1 +FROM t1 +LEFT JOIN +( t2 INNER JOIN t3 ON ( 1 IN ( SELECT c4 FROM t4 ) ) ) +ON (c1 = c3); +c1 +1 +2 +EXPLAIN EXTENDED SELECT c1 +FROM t1 +LEFT JOIN +( t2 INNER JOIN t3 ON ( 1 IN ( SELECT c4 FROM t4 ) ) ) +ON (c1 = c3); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 PRIMARY t3 ALL NULL NULL NULL NULL 2 100.00 Using where +2 SUBQUERY t4 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`c1` AS `c1` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(((`test`.`t3`.`c3` = `test`.`t1`.`c1`) and <cache>(<in_optimizer>(1,<exists>(select `test`.`t4`.`c4` from `test`.`t4` where (1 = `test`.`t4`.`c4`)))))) where 1 +# mdev-12820 +SELECT * +FROM t1 +LEFT JOIN +( ( SELECT * FROM t2 WHERE c2 IN ( SELECT c3 FROM t3 ) ) AS sq INNER JOIN t4 ) +ON (c1 = c2); +c1 c2 c4 +1 NULL NULL +2 NULL NULL +EXPLAIN EXTENDED SELECT * +FROM t1 +LEFT JOIN +( ( SELECT * FROM t2 WHERE c2 IN ( SELECT c3 FROM t3 ) ) AS sq INNER JOIN t4 ) +ON (c1 = c2); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 PRIMARY t4 ALL NULL NULL NULL NULL 2 100.00 +3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`c1` AS `c1`,`test`.`t2`.`c2` AS `c2`,`test`.`t4`.`c4` AS `c4` from `test`.`t1` left join (`test`.`t2` join `test`.`t4`) on(((`test`.`t2`.`c2` = `test`.`t1`.`c1`) and <in_optimizer>(`test`.`t1`.`c1`,<exists>(select `test`.`t3`.`c3` from `test`.`t3` where (<cache>(`test`.`t2`.`c2`) = `test`.`t3`.`c3`))))) where 1 +DROP TABLE t1,t2,t3,t4; set optimizer_switch=@subselect_sj_tmp; |