Re: Updating column on row update

this is how I do it if this helps:

column_name timestamp without time zone NOT NULL DEFAULT ('now'::text)::timestamp(6) without time zone

-----Original Message-----
From: pgsql-general-owner(at)postgresql(dot)org on behalf of Thom Brown
Sent: Sun 11/22/2009 2:50 PM
To: PGSQL Mailing List
Subject: [GENERAL] Updating column on row update

Hi,

This should be simple, but for some reason I'm not quite sure what the
solution is. I want to be able to update the value of a column for rows
that have been updated. More specifically, if a row is updated, I want it's
modified_date column to be populated with the current time stamp. I've
looked at triggers and rules, and it looks like I'd need to create a
function just to achieve this which seems incredibly clumsy and unnecessary.
Could someone enlighten me?

Thanks

Thom