Date: Thu, 8 Jan 2009 08:50:01 +0100
From: "A. Kretschmer" <andreas.kretschmer@schollglas.com>
To: pgsql-general@postgresql.org
Subject: Re: Fail of a return query from plpgsql function for a specific table
Message-ID: <20090108075001.GB15370@a-kretschmer.de>
References: <d8e7a1e30901071317x1eb1c731se957c95695512152@mail.gmail.com>
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In response to c k :
> Hi all,
> I have a table accgroups and many others. I have written a test function as
> follows.
> CREATE OR REPLACE FUNCTION uf_testfunction()
>   RETURNS SETOF associates AS
> $BODY$
> begin 
> return query select * from associates;
> return;
> end;
> $BODY$
>   LANGUAGE 'plpgsql' VOLATILE;
> This works fine for above table but not works at all for accgroups table. As I
> searched for this over web, it is identified as a bug for tables whose columns
> are changed(deleted and added). Is it true? 
> How to solve this issue?
> Thanks
> CPK

I can't reproduce your problem:

test=# create table foo (a int, b int);
CREATE TABLE
test=# create or replace function get_foo() returns setof foo as $$begin return query select * from foo; return; end; $$ LANGUAGE 'plpgsql' VOLATILE;
CREATE FUNCTION
test=# select * from get_foo();
 a | b
---+---
(0 rows)

test=# alter table foo add column c int;
ALTER TABLE
test=# select * from get_foo();
 a | b | c
---+---+---
(0 rows)


(only if i drop a column):
test=# alter table foo drop column c;
ALTER TABLE
test=# select * from get_foo();
ERROR:  structure of query does not match function result type
CONTEXT:  PL/pgSQL function "get_foo" line 1 at RETURN QUERY


Please, provide us an example including the error you got.


Andreas
-- 
Andreas Kretschmer
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