[MDEV-4842] STR_TO_DATE does not work with UCS2/UTF16/UTF32 - Jira

STR_TO_DATE returns NULL with a warning in case of a correct input
in combination with ucs2, utf16, utf16le, or utf32:

MySQL [test]> set character_set_connection=ucs2; select str_to_date('2001-01-01','%Y-%m-%d');show warnings;

Query OK, 0 rows affected (0.00 sec)

+--------------------------------------+

| str_to_date('2001-01-01','%Y-%m-%d') |

+--------------------------------------+

| NULL                                 |

+--------------------------------------+

1 row in set, 1 warning (0.00 sec)

+---------+------+-------------------------------------------------------+

| Level   | Code | Message                                               |

+---------+------+-------------------------------------------------------+

| Warning | 1411 | Incorrect datetime value: '' for function str_to_date |

+---------+------+-------------------------------------------------------+

1 row in set (0.00 sec)

The expected result is: 2001-01-01.

Note, MySQL-5.6 demonstrates the same problem.

Pushed into 5.3, 5.5, 10.0-base.

Alexander Barkov added a comment - 2013-11-08 20:21 Pushed into 5.3, 5.5, 10.0-base.

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