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| author | unknown <igor@rurik.mysql.com> | 2005-06-15 05:56:19 -0700 |
|---|---|---|
| committer | unknown <igor@rurik.mysql.com> | 2005-06-15 05:56:19 -0700 |
| commit | ad57284c6925fe19c182e5b43562e131e1297d7b (patch) | |
| tree | 620c44e385924a55af053c4edb01c7f0ba74eb36 /mysql-test/r/join_nested.result | |
| parent | 67c204c46b637a9c7b1323a2fcd443d6476ec5de (diff) | |
| download | mariadb-git-ad57284c6925fe19c182e5b43562e131e1297d7b.tar.gz | |
join_nested.result, join_nested.test:
Added a teast case for bug #11284.
sql_select.cc:
Fixed bug #11284.
Optimization with empty inner table currently cannot be
used in the case of nested outer join.
sql/sql_select.cc:
Fixed bug #11284.
Optimization with empty inner table currently cannot be
used in the case of nested outer join.
mysql-test/t/join_nested.test:
Added a teast case for bug #11284.
Diffstat (limited to 'mysql-test/r/join_nested.result')
| -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; |