On Jan 9, 2009, at 11:36 AM, Jay Pipes wrote:
All:
Here is the current behaviour of DATE_FORMAT():
mysql> SELECT DATE_FORMAT(NULL, "%Y-%m-%d");
+-------------------------------+
| DATE_FORMAT(NULL, "%Y-%m-%d") |
+-------------------------------+
| NULL |
+-------------------------------+
1 row in set (0.04 sec)
mysql> SELECT DATE_FORMAT("xxx", "%Y-%m-%d");
+--------------------------------+
| DATE_FORMAT("xxx", "%Y-%m-%d") |
+--------------------------------+
| NULL |
+--------------------------------+
1 row in set, 1 warning (0.00 sec)
mysql> show warnings;
+---------+------+-------------------------------------------+
| Level | Code | Message |
+---------+------+-------------------------------------------+
| Warning | 1292 | Truncated incorrect datetime value: 'xxx' |
+---------+------+-------------------------------------------+
1 row in set (0.00 sec)
Question:
1) Is this behaviour appropriate? Should the warning be changed to
an error in the second case?
Error
2) Should DATE_FORMAT(NULL, "%Y-&m-%d") produce a NULL value or an
error?
NULL seems good to me there.
Thanks in advance for your input.
Cheers,
Jay
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