Hi, I have problem with the IFNULL function:

http://dev.mysql.com/doc/refman/5.0/...unction_ifnull

My code:
Code:
IFNULL(NULL, str_to_date(`myDate`, '%d/%m/%Y %H.%i')),
Error:
[Err] 1411 - Incorrect datetime value: 'NULL' for function str_to_date

Can you help me?