diff options
Diffstat (limited to 'mysql-test/t/order_by.test')
| -rw-r--r-- | mysql-test/t/order_by.test | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/mysql-test/t/order_by.test b/mysql-test/t/order_by.test index e8887c07612..7d461df9cc8 100644 --- a/mysql-test/t/order_by.test +++ b/mysql-test/t/order_by.test @@ -1404,3 +1404,35 @@ SELECT DISTINCT a FROM t1 WHERE b = 1 ORDER BY c DESC LIMIT 0, 9; SELECT DISTINCT a FROM t1 WHERE b = 1 ORDER BY c DESC LIMIT 0, 9; DROP TABLE t1; + +--echo # +--echo # Bug #43029: FORCE INDEX FOR ORDER BY is ignored when join buffering +--echo # is used +--echo # + +CREATE TABLE t1 (a INT, b INT, KEY (a)); + +INSERT INTO t1 VALUES (0, NULL), (1, NULL), (2, NULL), (3, NULL); +INSERT INTO t1 SELECT a+4, b FROM t1; +INSERT INTO t1 SELECT a+8, b FROM t1; + +CREATE TABLE t2 (a INT, b INT); + +INSERT INTO t2 VALUES (0,NULL), (1,NULL), (2,NULL), (3,NULL), (4,NULL); +INSERT INTO t2 SELECT a+4, b FROM t2; + +--echo # shouldn't have "using filesort" +EXPLAIN +SELECT * FROM t1 FORCE INDEX FOR ORDER BY (a), t2 WHERE t1.a < 2 ORDER BY t1.a; + +--echo # should have "using filesort" +EXPLAIN +SELECT * FROM t1 USE INDEX FOR ORDER BY (a), t2 WHERE t1.a < 2 ORDER BY t1.a; + +--echo # should have "using filesort" +EXPLAIN +SELECT * FROM t1 FORCE INDEX FOR JOIN (a), t2 WHERE t1.a < 2 ORDER BY t1.a; + +DROP TABLE t1, t2; + +--echo End of 5.1 tests |