I create a table like this:
DROP TABLE IF EXISTS t1;
|
CREATE TABLE t1 (a INT);
|
INSERT INTO t1 VALUES (10),(20),(30);
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These queries normally return results:
(SELECT a FROM t1 GROUP BY a ORDER BY GROUP_CONCAT(a));
|
(SELECT a FROM t1 GROUP BY a ORDER BY GROUP_CONCAT(a)) LIMIT 1;
|
(SELECT a FROM t1 GROUP BY a ORDER BY a,GROUP_CONCAT(a));
|
(SELECT a FROM t1 GROUP BY a ORDER BY a,GROUP_CONCAT(a)) LIMIT 1;
|
These queries return the "Invalid use of group function" error:
(SELECT a FROM t1 GROUP BY a ORDER BY GROUP_CONCAT(a)) ORDER BY a;
|
(SELECT a FROM t1 GROUP BY a ORDER BY GROUP_CONCAT(a)) ORDER BY a LIMIT 1;
|
(SELECT a FROM t1 GROUP BY a ORDER BY a,GROUP_CONCAT(a)) ORDER BY a;
|
(SELECT a FROM t1 GROUP BY a ORDER BY a,GROUP_CONCAT(a)) ORDER BY a LIMIT 1;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY GROUP_CONCAT(a));
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY GROUP_CONCAT(a)) LIMIT 1;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY GROUP_CONCAT(a)) ORDER BY a;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY GROUP_CONCAT(a)) ORDER BY a LIMIT 1;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY a,GROUP_CONCAT(a));
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY a,GROUP_CONCAT(a)) LIMIT 1;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY a,GROUP_CONCAT(a)) ORDER BY a;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY a,GROUP_CONCAT(a)) ORDER BY a LIMIT 1;
|
In MySQL-5.7 all above queries work without errors.
The same problem is repeatable with MAX instead of GROUP_CONCAT:
These queries work in both MariaDB and MySQL:
(SELECT a FROM t1 GROUP BY a ORDER BY MAX(a));
|
(SELECT a FROM t1 GROUP BY a ORDER BY MAX(a)) LIMIT 1;
|
(SELECT a FROM t1 GROUP BY a ORDER BY a,MAX(a));
|
(SELECT a FROM t1 GROUP BY a ORDER BY a,MAX(a)) LIMIT 1;
|
These queries fail in MariaDB, but work in MySQL:
(SELECT a FROM t1 GROUP BY a ORDER BY MAX(a)) ORDER BY a;
|
(SELECT a FROM t1 GROUP BY a ORDER BY MAX(a)) ORDER BY a LIMIT 1;
|
(SELECT a FROM t1 GROUP BY a ORDER BY a,MAX(a)) ORDER BY a;
|
(SELECT a FROM t1 GROUP BY a ORDER BY a,MAX(a)) ORDER BY a LIMIT 1;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY MAX(a));
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY MAX(a)) LIMIT 1;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY MAX(a)) ORDER BY a;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY MAX(a)) ORDER BY a LIMIT 1;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY a,MAX(a));
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY a,MAX(a)) LIMIT 1;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY a,MAX(a)) ORDER BY a;
|
SELECT 1 AS a UNION (SELECT a FROM t1 GROUP BY a ORDER BY a,MAX(a)) ORDER BY a LIMIT 1;
|
- relates to
-
MDEV-8909
union parser cleanup
-
-
Closed
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It worked in 5.1 and 5.2, but stopped working in 5.3.