MySQL Create column with type DATETIME

Question

I have an admin users db, I want to create a column with type datetime for edits, to know when and admin acc was edited, I will introduce the time with php and MySQLi, im on phpmyadmin, when I try to create the column it says:

#1292 - Incorrect datetime value: '0000-00-00 00:00:00' for column 'editado' at row 1

MySQL code is:

ALTER TABLE `admins` ADD `editado` DATETIME NOT NULL AFTER `password`;

Tried to execute on SQL but nothing, how can I do this?

Answer 1

If the table is not empty when you add a column, you need to first add the column as NULLABLE, update all the records in the table assigning a value to the column, then you can change the column you added from NULLABLE to NOT NULL. So something like this should be done:

ALTER TABLE admins ADD editado DATETIME NULL AFTER password;
UPDATE admins SET editado = '1900-01-01 00:00:00';
ALTER TABLE admins MODIFY editado DATETIME NOT NULL;

Not sure if the last query is correct syntax as I don't write MySQL often but thats what should happen.