[MDEV-8658] DATE(zerofill_column) and DATE(COALESCE(zerofill_column)) return different results Created: 2015-08-21  Updated: 2015-09-23  Resolved: 2015-09-23

Status: Closed
Project: MariaDB Server
Component/s: Temporal Types
Affects Version/s: 5.5, 10.0, 10.1
Fix Version/s: 10.1.8

Type: Bug Priority: Major
Reporter: Alexander Barkov Assignee: Alexander Barkov
Resolution: Fixed Votes: 0
Labels: upstream-not-affected

Issue Links:
Relates
relates to MDEV-8660 TIME(int_zerofill_column) returns a w... Closed
Sprint: 10.1.8-3

 Description    

DROP TABLE IF EXISTS t1;
 
CREATE TABLE t1 (a INT(6) ZEROFILL);
 
INSERT INTO t1 VALUES (1);
 
SELECT DATE(a), DATE(COALESCE(a)) FROM t1;

returns

+------------+-------------------+
 
| DATE(a)    | DATE(COALESCE(a)) |
 
+------------+-------------------+
 
| 2000-00-01 | NULL              |
 
+------------+-------------------+
 
1 row in set, 1 warning (0.00 sec)



 Comments   
Comment by Alexander Barkov [ 2015-09-23 ]

Not repeatable in MySQL-5.7.8

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