Commit c358e322 authored by unknown's avatar unknown

Merge ibabaev@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

into  rurik.mysql.com:/home/igor/mysql-5.0-opt

parents ea3dfa4a 1b5bd18d
No related merge requests found
......@@ -654,3 +654,12 @@ CHAR_LENGTH( GROUP_CONCAT(b) )
240001
SET GROUP_CONCAT_MAX_LEN = 1024;
DROP TABLE t1;
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (2,1), (1,2), (2,2), (1,3);
SELECT GROUP_CONCAT(a), x
FROM (SELECT a, GROUP_CONCAT(b) x FROM t1 GROUP BY a) AS s
GROUP BY x;
GROUP_CONCAT(a) x
2 1,2
1 2,3
DROP TABLE t1;
......@@ -447,3 +447,18 @@ SELECT a, CHAR_LENGTH(b) FROM t1;
SELECT CHAR_LENGTH( GROUP_CONCAT(b) ) FROM t1;
SET GROUP_CONCAT_MAX_LEN = 1024;
DROP TABLE t1;
#
# Bug #22015: crash with GROUP_CONCAT over a derived table that
# returns the results of aggregation by GROUP_CONCAT
#
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (2,1), (1,2), (2,2), (1,3);
SELECT GROUP_CONCAT(a), x
FROM (SELECT a, GROUP_CONCAT(b) x FROM t1 GROUP BY a) AS s
GROUP BY x;
DROP TABLE t1;
......@@ -1268,6 +1268,7 @@ sortlength(THD *thd, SORT_FIELD *sortorder, uint s_length,
switch ((sortorder->result_type=sortorder->item->result_type())) {
case STRING_RESULT:
sortorder->length=sortorder->item->max_length;
set_if_smaller(sortorder->length, thd->variables.max_sort_length);
if (use_strnxfrm((cs=sortorder->item->collation.collation)))
{
sortorder->length= cs->coll->strnxfrmlen(cs, sortorder->length);
......
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