database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-27 18:02:13 +03:00
Code Activity

MDEV-19350 Server crashes in delete_tree_element / ... / Item_func_group_concat::repack_tree

Browse Source 
Item_func_group_concat stores values in `tree`, which is often, but not
always the same as `&tree_base`.
This commit is contained in:
Sergei Golubchik
2019-04-27 19:38:39 +02:00
parent 3fe38574fb
commit d88dfd8732
3 changed files with 40 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
mysql-test/r/func_gconcat.result
View File

@ -1207,3 +1207,22 @@ c
Warnings:
Warning 1260 Row 15 was cut by GROUP_CONCAT()
set max_session_mem_used=default;
SET group_concat_max_len= 8;
CREATE TABLE t1 (a INT);
INSERT t1 VALUES (1),(2);
CREATE TABLE t2 (b DATE, c INT);
INSERT t2 VALUES ('2019-12-04',1),('2020-03-28',2);
CREATE TABLE t3 (d INT);
INSERT t3 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14);
CREATE TABLE t4 (e INT);
INSERT t4 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15);
SELECT (SELECT MAX(a) FROM t1 WHERE t2_sq.c > 0) AS f,
GROUP_CONCAT(t2_sq.b ORDER BY 1) AS gc
FROM (SELECT t2_a.* FROM t2 AS t2_a, t2 AS t2_b) AS t2_sq, t3, t4
GROUP BY f;
f gc
2 2019-12-
Warnings:
Warning 1260 Row 1 was cut by GROUP_CONCAT()
DROP TABLE t1, t2, t3, t4;
SET group_concat_max_len= default;