O Markus Schaber έγραψε στις Feb 2, 2006 :
> Hi, Daniel,
>
> Daniel Caune wrote:
>
> > I'm not sure to understand. Why calling a function from a script is different from executing a series of SQL
commands? I mean, I can run a script defined as follows:
> >
> > SELECT myjob();
> >
> > where myjob is a stored procedure such as:
> >
> > CREATE OR REPLACE FUNCTION myjob()
> > RETURNS void
> > AS $$
> > <a-lot-of-complex-stuff-here>
> > END;
> > $$ LANGUAGE PLPGSQL;
> >
> > Does that make sense?
>
> It does make sense if myjob() does more than just execute a bunch of
> statements, e. G. it contains if(), loops or something else.
>
> PLPGSQL is turing complete, plain SQL is not.
Hmmmm is SQL equally powerful as a pushdown automaton then???
Just kidding!
>
> Markus
>
--
-Achilleus