Converting a date string which is before 1970 into a timestamp in MySQL

Question

Not a very good title, so my apologies.

For some reason, (I wasn\'t the person who did it, i digress) we have a table structure where the field type for a date is va

Answer 1

Aha! We've found a solution!

The SQL to do it:

SELECT DATEDIFF( STR_TO_DATE('04-07-1988','%d-%m-%Y'),FROM_UNIXTIME(0))*24*3600 -> 583977600
SELECT DATEDIFF( STR_TO_DATE('04-07-1968','%d-%m-%Y'),FROM_UNIXTIME(0))*24*3600 -> -47174400 

This could be useful for future reference.

You can test it here: http://www.onlineconversion.com/unix_time.htm