MySQL Incorrect datetime value: '0000-00-00 00:00:00'

Question

I\'ve recently taken over an old project that was created 10 years ago. It uses MySQL 5.1.

Among other things, I need to change the default character set from latin1

Answer 1

I wasn't able to do this:

UPDATE users SET created = NULL WHERE created = '0000-00-00 00:00:00'

(on MySQL 5.7.13).

I kept getting the Incorrect datetime value: '0000-00-00 00:00:00' error.

Strangely, this worked: SELECT * FROM users WHERE created = '0000-00-00 00:00:00'. I have no idea why the former fails and the latter works... maybe a MySQL bug?

At any case, this UPDATE query worked:

UPDATE users SET created = NULL WHERE CAST(created AS CHAR(20)) = '0000-00-00 00:00:00'