Re: need trigger help

Excellent, I got it working...Thanks ;)

Abdul-Wahid

On 5/9/05, Mike Nolan <nolan@gw.tssi.com> wrote:
> > So how can I create a trigger to automatically update the hash fields
> > on updates and inserts?
>
> Something like the following works for me:
>
> create or replace function public.my_trigger()
> returns trigger as '
>
> NEW.hashfield = hashfunction(NEW.data1,NEW.data2);
>
> RETURN NEW;
> END;
> ' language 'plpgsql';
>
> --------
> create trigger my_trig
> before insert or update on my_tablename
> for each row
> execute procedure public.my_trigger();
>
> The 'RETURN NEW' part is very important, without it your hash field won't
> get updated at all.
> --
> Mike Nolan
>
>