diff options
Diffstat (limited to 'mysql-test/r')
| -rw-r--r-- | mysql-test/r/join_nested.result | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/mysql-test/r/join_nested.result b/mysql-test/r/join_nested.result index bce086b00d2..27edac1b30b 100644 --- a/mysql-test/r/join_nested.result +++ b/mysql-test/r/join_nested.result @@ -1321,3 +1321,25 @@ NULL NULL NULL 18 NULL NULL 19 NULL NULL DROP TABLE t1,t2,t3; +CREATE TABLE t1 (c11 int); +CREATE TABLE t2 (c21 int); +CREATE TABLE t3 (c31 int); +INSERT INTO t1 VALUES (4), (5); +SELECT * FROM t1 LEFT JOIN t2 ON c11=c21; +c11 c21 +4 NULL +5 NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON c11=c21; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 system NULL NULL NULL NULL 0 const row not found +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21; +c11 c21 c31 +4 NULL NULL +5 NULL NULL +EXPLAIN SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 0 +1 SIMPLE t3 ALL NULL NULL NULL NULL 0 +DROP TABLE t1,t2,t3; |