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Re: Should we still require RETURN in plpgsql?

From: Dennis Bjorklund <db(at)zigo(dot)dhs(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: Should we still require RETURN in plpgsql?
Date: 2005-04-05 07:04:30
Message-ID: Pine.LNX.4.44.0504050900340.16409-100000@zigo.dhs.org (view raw or flat)
Thread:
Lists: pgsql-hackers
On Tue, 5 Apr 2005, Tom Lane wrote:

> CREATE FUNCTION sum_n_product(x int, y int, OUT sum int, OUT prod int) AS $$
> BEGIN
>     sum := x + y;
>     prod := x * y;
>     RETURN;
> END;
> $$ LANGUAGE plpgsql;
> 
> The RETURN statement is kinda useless in this example, but it is still
> required, because we don't allow control to fall off the end of a
> plpgsql function without causing an error.
> 
> I am thinking we should allow exit by falling off the end of the
> function when (a) it has output parameter(s), or (b) it is declared
> "RETURNS void".  Comments?

The above code example do not have any RETURNS clause, does that mean that 
it defaults to RETURNS void?

I don't see what (a) has to do with anything. The return value is
independent of in/out:ness of the parameters, isn't it?

-- 
/Dennis Björklund


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Subject: Re: Should we still require RETURN in plpgsql?
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