diff options
| 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/t/join_nested.test | |
| 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/t/join_nested.test')
| -rw-r--r-- | mysql-test/t/join_nested.test | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/mysql-test/t/join_nested.test b/mysql-test/t/join_nested.test index 9591f1fa7ed..992217d0391 100644 --- a/mysql-test/t/join_nested.test +++ b/mysql-test/t/join_nested.test @@ -752,3 +752,21 @@ EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c; DROP TABLE t1,t2,t3; + +# +# Test for bug #11284: empty table in a nested left join +# + +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; +EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON c11=c21; + +SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21; +EXPLAIN SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21; + +DROP TABLE t1,t2,t3; |