diff options
Diffstat (limited to 'mysql-test/t/select.test')
| -rw-r--r-- | mysql-test/t/select.test | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test index eeabd2641d8..8ecadfc9dfb 100644 --- a/mysql-test/t/select.test +++ b/mysql-test/t/select.test @@ -3844,6 +3844,46 @@ EXPLAIN EXTENDED SELECT x.a, y.a, z.a FROM t1 x JOIN t1 y ON x.a=y.a JOIN t1 z ON y.a=z.a WHERE x.a='2001-01-01' AND z.a='2001-01-01 00:00:00'; +DROP TABLE t1; + + +--echo # +--echo # Bug #49897: crash in ptr_compare when char(0) NOT NULL +--echo # column is used for ORDER BY +--echo # +SET @old_sort_buffer_size= @@session.sort_buffer_size; +SET @@sort_buffer_size= 40000; + +CREATE TABLE t1(a CHAR(0) NOT NULL); +--disable_warnings +INSERT INTO t1 VALUES (0), (0), (0); +--enable_warnings +INSERT INTO t1 SELECT t11.a FROM t1 t11, t1 t12; +INSERT INTO t1 SELECT t11.a FROM t1 t11, t1 t12; +INSERT INTO t1 SELECT t11.a FROM t1 t11, t1 t12; +EXPLAIN SELECT a FROM t1 ORDER BY a; +--disable_result_log +SELECT a FROM t1 ORDER BY a; +--enable_result_log +DROP TABLE t1; +CREATE TABLE t1(a CHAR(0) NOT NULL, b CHAR(0) NOT NULL, c int); +--disable_warnings +INSERT INTO t1 VALUES (0, 0, 0), (0, 0, 2), (0, 0, 1); +--enable_warnings +INSERT INTO t1 SELECT t11.a, t11.b, t11.c FROM t1 t11, t1 t12; +INSERT INTO t1 SELECT t11.a, t11.b, t11.c FROM t1 t11, t1 t12; +INSERT INTO t1 SELECT t11.a, t11.b, t11.c FROM t1 t11, t1 t12; +EXPLAIN SELECT a FROM t1 ORDER BY a LIMIT 5; +SELECT a FROM t1 ORDER BY a LIMIT 5; +EXPLAIN SELECT * FROM t1 ORDER BY a, b LIMIT 5; +SELECT * FROM t1 ORDER BY a, b LIMIT 5; +EXPLAIN SELECT * FROM t1 ORDER BY a, b, c LIMIT 5; +SELECT * FROM t1 ORDER BY a, b, c LIMIT 5; +EXPLAIN SELECT * FROM t1 ORDER BY c, a LIMIT 5; +SELECT * FROM t1 ORDER BY c, a LIMIT 5; + +SET @@sort_buffer_size= @old_sort_buffer_size; +DROP TABLE t1; --echo End of 5.0 tests |