Gary Hoffman wrote:
>I have a column named mod_date on a particular table. It has a default
>value of now() which is the create date of the row. However, I want to
>update that field with the current timestamp whenever its record is
>updated.
>
>I know how to do this using PHP by including the date() in the data I'm
>using to update the record. However, I would like to do this on the
>PostgreSQL side of the transaction. I can't figure out how to write a
>trigger or other technique to do this.
>
>
A trigger is the correct way.
>Simply asked: What is the easiest way to automatically update the mod_date
>field when the record is updated?
>
>
Check out the PostgreSQL documentation it is quite comprehensive.
http://www.postgresql.org/docs/7.4/interactive/triggers.html
Regards
Justin