-
Type:
Bug
-
Status: Closed (View Workflow)
-
Priority:
Major
-
Resolution: Fixed
-
Affects Version/s: 10.5
-
Fix Version/s: 10.5.4
-
Component/s: JSON
-
Labels:None
set group_concat_max_len=64; |
create table t30 (a varchar(254)); |
insert into t30 values (concat('x64-', repeat('a', 60))); |
insert into t30 values (concat('x64-', repeat('b', 60))); |
insert into t30 values (concat('x64-', repeat('c', 60))); |
MariaDB [test]> select json_arrayagg(a) from t30;
|
+--------------------------------------------------------------------+
|
| json_arrayagg(a) |
|
+--------------------------------------------------------------------+
|
| ["x64-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa] |
|
+--------------------------------------------------------------------+
|
1 row in set, 1 warning (0.002 sec)
|
MariaDB [test]> show warnings;
|
+---------+------+---------------------------------+
|
| Level | Code | Message |
|
+---------+------+---------------------------------+
|
| Warning | 1260 | Row 1 was cut by GROUP_CONCAT() |
|
+---------+------+---------------------------------+
|
This is bad on multiple levels:
- Invalid JSON is produced (which may prevent the user application from processing it altogether)
- The error message mentions GROUP_CONCAT, not json_arrayagg.