From: Arnold Daniels
Date: July 29 2007 1:37am
Subject: multiple current_timestamp
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Hi all,

Why can there be only one timestamp field with current_timestamp in 
default or on update?

I've been wondered about this for a long time. A table often has a field 
`date_added`, with the current timestamp only as default, and a field 
`date_changed` with a changing timestamp upon updating. Basically it is 
irritating me, since now I have to either solve this in code or use a 
trigger. Also because I do not understand why this limitation is necessary.

Is this something that is subjected to change in MySQL 6? I haven't seen 
any plans for it.

Best regards,
Arnold