database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-12-24 11:21:21 +03:00
Code Activity

Bug #11765810 58813: SERVER THREAD HANGS WHEN JOIN + WHERE + GROUP BY

Browse Source 
IS EXECUTED TWICE FROM P

This bug is a duplicate of bug 12567331, which was pushed to the
optimizer backporting tree on 2011-06-11. This is just a back-port of
the fix. Both test cases are included as they differ somewhat.
This commit is contained in:
Martin Hansson
2012-02-07 14:16:09 +01:00
parent 350e916881
commit 34cd261aae
3 changed files with 116 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
mysql-test/r/join_outer.result
View File

@@ -1427,4 +1427,62 @@ WHERE t1.f1 = 4 AND t2.f1 IS NOT NULL AND t2.f2 IS NOT NULL
GROUP BY t2.f1, t2.f2;
f1 f1 f2
DROP TABLE t1,t2;
# BUG#12567331 - INFINITE LOOP WHEN RESOLVING AN ALIASED COLUMN
# USED IN GROUP BY
CREATE TABLE t1 (
col_varchar_1024_latin1_key varchar(1024),
col_varchar_10_latin1 varchar(10),
col_int int(11),
pk int(11)
);
CREATE TABLE t2 (
col_int_key int(11),
col_int int(11),
pk int(11)
);
PREPARE prep_stmt_9846 FROM '
SELECT alias1.pk AS field1 FROM
t1 AS alias1
LEFT JOIN
(
t2 AS alias2
RIGHT JOIN
(
t2 AS alias3
JOIN t1 AS alias4
ON 1
)
ON 1
)
ON 1
GROUP BY field1';
execute prep_stmt_9846;
field1
execute prep_stmt_9846;
field1
drop table t1,t2;
#
# Bug #11765810 58813: SERVER THREAD HANGS WHEN JOIN + WHERE + GROUP BY
# IS EXECUTED TWICE FROM P
#
CREATE TABLE t1 ( a INT ) ENGINE = MYISAM;
INSERT INTO t1 VALUES (1);
PREPARE prep_stmt FROM '
SELECT 1 AS f FROM t1
LEFT JOIN t1 t2
RIGHT JOIN t1 t3
JOIN t1 t4
ON 1
ON 1
ON 1
GROUP BY f';
EXECUTE prep_stmt;
f
1
EXECUTE prep_stmt;
f
1
DROP TABLE t1;
End of 5.1 tests

58
mysql-test/t/join_outer.test
View File

@@ -1010,4 +1010,62 @@ GROUP BY t2.f1, t2.f2;
DROP TABLE t1,t2;
--echo
--echo # BUG#12567331 - INFINITE LOOP WHEN RESOLVING AN ALIASED COLUMN
--echo # USED IN GROUP BY
--echo
CREATE TABLE t1 (
col_varchar_1024_latin1_key varchar(1024),
col_varchar_10_latin1 varchar(10),
col_int int(11),
pk int(11)
);
CREATE TABLE t2 (
col_int_key int(11),
col_int int(11),
pk int(11)
);
PREPARE prep_stmt_9846 FROM '
SELECT alias1.pk AS field1 FROM
t1 AS alias1
LEFT JOIN
(
t2 AS alias2
RIGHT JOIN
(
t2 AS alias3
JOIN t1 AS alias4
ON 1
)
ON 1
)
ON 1
GROUP BY field1';
execute prep_stmt_9846;
execute prep_stmt_9846;
drop table t1,t2;
--echo #
--echo # Bug #11765810 58813: SERVER THREAD HANGS WHEN JOIN + WHERE + GROUP BY
--echo # IS EXECUTED TWICE FROM P
--echo #
CREATE TABLE t1 ( a INT ) ENGINE = MYISAM;
INSERT INTO t1 VALUES (1);
PREPARE prep_stmt FROM '
SELECT 1 AS f FROM t1
LEFT JOIN t1 t2
RIGHT JOIN t1 t3
JOIN t1 t4
ON 1
ON 1
ON 1
GROUP BY f';
EXECUTE prep_stmt;
EXECUTE prep_stmt;
DROP TABLE t1;
--echo End of 5.1 tests