Re: Returning multiple rows from a function?

From: brian <brian(at)zijn-digital(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Returning multiple rows from a function?
Date: 2006-11-27 17:19:11
Message-ID: 456B1E0F.7000907@zijn-digital.com
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Bret Schuhmacher wrote:
> Hi all,
>
> I'm trying to return multiple rows from a function, but all I can get
> with the code below is the first row. I got most of the function below
> off the net and I think the problem is the first "RETURN" statement,
> which stops the loop.
>
> CREATE OR replace function getOnCallVol() RETURNS RECORD AS $$
> DECLARE
> r RECORD; BEGIN
> FOR r IN
> select fname,lname,phone1,phone2,phone3,phone4,phone5
> from events e,volunteer v
> where (now() >= starttime and now()<=endtime and e.v_id =
> v.v_id)
> OR (fname='Backup') limit 2
>
> LOOP
> return r;
> END LOOP;
> RETURN null;
>
> END;
> $$ Language plpgsql;
>
> When I run the SQL alone, I get two rows, as I should:
> Mary Smith 1111111111 2222222222 3333333333 Backup
> Cellphone 3319993
> However, if I run it via the function (i.e. select getOnCallVol()), I
> get this:
> (Mary,Smith,1111111111,2222222222,3333333333,"","")
>
> Is there another way to get each row returned? I played around with
> making the function return a "SETOF RECORD" and using "RETURN NEXT", but
> had no luck.
> Thanks,
>

Use "RETURNS SETOF record" and "FOR r IN ... LOOP RETURN NEXT; END LOOP;
RETURN;"

brian

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