database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-01-06 05:22:24 +03:00
Code Activity

Bug#12329653 - EXPLAIN, UNION, PREPARED STATEMENT, CRASH, SQL_FULL_GROUP_BY

Browse Source 
The query was re-written *after* we had tagged it with NON_AGG_FIELD_USED.
Remove the flag before continuing.
This commit is contained in:
Tor Didriksen
2011-05-04 16:18:21 +02:00
parent faad822740
commit a32df762d4
11 changed files with 110 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
mysql-test/r/explain.result
View File

@@ -176,11 +176,12 @@ SELECT @@session.sql_mode INTO @old_sql_mode;
SET SESSION sql_mode='ONLY_FULL_GROUP_BY';
EXPLAIN EXTENDED SELECT 1 FROM t1
WHERE f1 > ALL( SELECT t.f1 FROM t1,t1 AS t );
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SHOW WARNINGS;
Level Code Message
Error 1140 Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
Note 1003 select 1 AS `1` from `test`.`t1` where <not>(<exists>(...))
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
2 SUBQUERY t system NULL NULL NULL NULL 0 const row not found
Warnings:
Note 1003 select 1 AS `1` from `test`.`t1` where 0
SET SESSION sql_mode=@old_sql_mode;
DROP TABLE t1;
End of 5.0 tests.

26
mysql-test/r/subselect.result
View File

@@ -4528,6 +4528,32 @@ pk int_key
7 3
DROP TABLE t1,t2;
#
# Bug#12329653
# EXPLAIN, UNION, PREPARED STATEMENT, CRASH, SQL_FULL_GROUP_BY
#
CREATE TABLE t1(a1 int);
INSERT INTO t1 VALUES (1),(2);
SELECT @@session.sql_mode INTO @old_sql_mode;
SET SESSION sql_mode='ONLY_FULL_GROUP_BY';
SELECT 1 FROM t1 WHERE 1 < SOME (SELECT a1 FROM t1);
1
1
1
PREPARE stmt FROM
'SELECT 1 UNION ALL
SELECT 1 FROM t1
ORDER BY
(SELECT 1 FROM t1 AS t1_0
WHERE 1 < SOME (SELECT a1 FROM t1)
)' ;
EXECUTE stmt ;
ERROR 21000: Subquery returns more than 1 row
EXECUTE stmt ;
ERROR 21000: Subquery returns more than 1 row
SET SESSION sql_mode=@old_sql_mode;
DEALLOCATE PREPARE stmt;
DROP TABLE t1;
#
# Bug #52711: Segfault when doing EXPLAIN SELECT with
# union...order by (select... where...)
#

9
mysql-test/t/explain.test
View File

@@ -1,5 +1,5 @@
#
# Test of different EXPLAIN's
# Test of different EXPLAINs
--disable_warnings
drop table if exists t1;
@@ -157,11 +157,12 @@ CREATE TABLE t1 (f1 INT);
SELECT @@session.sql_mode INTO @old_sql_mode;
SET SESSION sql_mode='ONLY_FULL_GROUP_BY';
# EXPLAIN EXTENDED (with subselect). used to crash. should give NOTICE.
--error ER_MIX_OF_GROUP_FUNC_AND_FIELDS
# EXPLAIN EXTENDED (with subselect). used to crash.
# This is actually a valid query for this sql_mode,
# but it was transformed in such a way that it failed, see
# Bug#12329653 - EXPLAIN, UNION, PREPARED STATEMENT, CRASH, SQL_FULL_GROUP_BY
EXPLAIN EXTENDED SELECT 1 FROM t1
WHERE f1 > ALL( SELECT t.f1 FROM t1,t1 AS t );
SHOW WARNINGS;
SET SESSION sql_mode=@old_sql_mode;

34
mysql-test/t/subselect.test
View File

@@ -3506,6 +3506,40 @@ ORDER BY outr.pk;
DROP TABLE t1,t2;
--echo #
--echo # Bug#12329653
--echo # EXPLAIN, UNION, PREPARED STATEMENT, CRASH, SQL_FULL_GROUP_BY
--echo #
CREATE TABLE t1(a1 int);
INSERT INTO t1 VALUES (1),(2);
SELECT @@session.sql_mode INTO @old_sql_mode;
SET SESSION sql_mode='ONLY_FULL_GROUP_BY';
## First a simpler query, illustrating the transformation
## '1 < some (...)' => '1 < max(...)'
SELECT 1 FROM t1 WHERE 1 < SOME (SELECT a1 FROM t1);
## The query which made the server crash.
PREPARE stmt FROM
'SELECT 1 UNION ALL
SELECT 1 FROM t1
ORDER BY
(SELECT 1 FROM t1 AS t1_0
WHERE 1 < SOME (SELECT a1 FROM t1)
)' ;
--error ER_SUBQUERY_NO_1_ROW
EXECUTE stmt ;
--error ER_SUBQUERY_NO_1_ROW
EXECUTE stmt ;
SET SESSION sql_mode=@old_sql_mode;
DEALLOCATE PREPARE stmt;
DROP TABLE t1;
--echo #
--echo # Bug #52711: Segfault when doing EXPLAIN SELECT with
--echo # union...order by (select... where...)