diff options
Diffstat (limited to 'mysql-test/r/subselect4.result')
| -rw-r--r-- | mysql-test/r/subselect4.result | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/mysql-test/r/subselect4.result b/mysql-test/r/subselect4.result index f9337ddc78a..6c942bca31a 100644 --- a/mysql-test/r/subselect4.result +++ b/mysql-test/r/subselect4.result @@ -1226,22 +1226,25 @@ CREATE TABLE t4 (c1 varchar(1) primary key); INSERT INTO t4 VALUES ('k'), ('d'); SET @save_optimizer_switch=@@optimizer_switch; SET optimizer_switch='outer_join_with_cache=off'; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; EXPLAIN SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2); Using join buffer (flat, BNL join) +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1) +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); c1 c1 EXPLAIN SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2); Using join buffer (flat, BNL join) +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1) +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); c1 c1 +SET optimizer_switch='materialization=on'; EXPLAIN SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2); id select_type table type possible_keys key key_len ref rows Extra |