[MDEV-27362] JSON_OBJECT('name',zerofill_numeric_column) returns an invalid JSON Created: 2021-12-25  Updated: 2023-04-27

Status: Open
Project: MariaDB Server
Component/s: JSON
Affects Version/s: 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8
Fix Version/s: 10.4, 10.5, 10.6

Type: Bug Priority: Major
Reporter: Alexander Barkov Assignee: Alexander Barkov
Resolution: Unresolved Votes: 0
Labels: None


 Description    

DROP TABLE IF EXISTS t1;
 
CREATE TABLE t1 (a INT ZEROFILL);
 
INSERT INTO t1 VALUES (1);
 
SELECT JSON_OBJECT('a',a), JSON_VALID(JSON_OBJECT('a',a)) FROM t1;


+--------------------+--------------------------------+
 
| JSON_OBJECT('a',a) | JSON_VALID(JSON_OBJECT('a',a)) |
 
+--------------------+--------------------------------+
 
| {"a": 0000000001}  |                              0 |
 
+--------------------+--------------------------------+

Notice, the constructed JSON value is wrong. The 0000000001 literal should probably be quoted.
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