Re: problem selecting from function

From: Michael Fuhr <mike(at)fuhr(dot)org>
To: Rikard Pavelic <rikard(dot)pavelic(at)zg(dot)htnet(dot)hr>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: problem selecting from function
Date: 2007-04-06 09:55:12
Message-ID: 20070406095512.GA21873@winnie.fuhr.org
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On Fri, Apr 06, 2007 at 03:52:17AM +0200, Rikard Pavelic wrote:
> When I select from this function I get an error
>
> ERROR: record "red" has no field "id"
[...]
> create function select_ex1(out id int, out name1 varchar, out value1
> int) returns setof record as
> $$
> declare red record;
> begin
> for red in select id, name1, value1 from example1 LOOP
> id=red.id;
> name1=red.name1;
> value1=red.value1;
> return next;

The columns in the select list match the parameter names so you're
selecting the parameters, not the columns in example1. The query
is effectively:

for red in select NULL, NULL, NULL from example1 loop

The code should work if you qualify the columns:

for red in select e.id, e.name1, e.value1 from example1 e loop

--
Michael Fuhr

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