Re: RFD: Don't force plpgsql IN parameters to constant

Steve Prentice wrote:
> Is there a reason we force plpgsql IN parameters to constant? The
> reason I ask is because having them mutable would go a long way in
> easing a port from Informix's SPL. For better or worse, we have a fair
> amount of code in SPL that does something like:
>
> -- pObjectId is an IN parameter
> IF pObjectId IS NULL THEN
> pObjectId := newid();
> END IF;
>
> I understand it may be better to use a different technique here, but
> we have a substantial amount of SPL (40k lines) and if we could make
> the IN parameters mutable, it would make my day.
>

First reaction is that it would mean we could never pass them by
reference. I know PLPerl uses in effect pass by copy, but what does
PLPgsql do?

cheers

andrew