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| author | Georgi Kodinov <joro@sun.com> | 2010-04-15 17:04:24 +0300 |
|---|---|---|
| committer | Georgi Kodinov <joro@sun.com> | 2010-04-15 17:04:24 +0300 |
| commit | a8ae3cd6e9bf1713ec9508e7639f936c0b97316a (patch) | |
| tree | 3802fe4c126313ee2f05b6b546702a0948f283f6 /mysql-test/t/subselect.test | |
| parent | 5b54e86ec182b77e8937822bc787d1186bd6f779 (diff) | |
| download | mariadb-git-a8ae3cd6e9bf1713ec9508e7639f936c0b97316a.tar.gz | |
Bug #52711: Segfault when doing EXPLAIN SELECT with
union...order by (select... where...)
The problem is mysql is trying to materialize and
cache the scalar sub-queries at JOIN::optimize
even for EXPLAIN where the number of columns is
totally different from what's expected.
Fixed by not executing the scalar subqueries
for EXPLAIN.
Diffstat (limited to 'mysql-test/t/subselect.test')
| -rw-r--r-- | mysql-test/t/subselect.test | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test index c58faf60010..1f471b46c4e 100644 --- a/mysql-test/t/subselect.test +++ b/mysql-test/t/subselect.test @@ -3701,3 +3701,28 @@ GROUP BY DROP TABLE t3; DROP TABLE t2; DROP TABLE t1; + + +--echo # +--echo # Bug #52711: Segfault when doing EXPLAIN SELECT with +--echo # union...order by (select... where...) +--echo # + +CREATE TABLE t1 (a VARCHAR(10), FULLTEXT KEY a (a)); +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (b INT); +INSERT INTO t2 VALUES (1),(2); + +--echo # Should not crash +--disable_result_log +EXPLAIN +SELECT * FROM t2 UNION SELECT * FROM t2 + ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE)); + +--echo # Should not crash +SELECT * FROM t2 UNION SELECT * FROM t2 + ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE)); +DROP TABLE t1,t2; +--enable_result_log + +--echo End of 5.1 tests |