pl/pgsql problem with return types

Hello!

i have problem with pl/pgsql function;

====================================================
===
ERROR: wrong record type supplied in RETURN NEXT
CONTEXT: PL/pgSQL function "tests" line 6 at return next
===

-- Function: tests(int8)
-- DROP FUNCTION tests(int8);

CREATE OR REPLACE FUNCTION tests(int8)
RETURNS SETOF pages AS
$BODY$DECLARE
P RECORD;
BEGIN
FOR P IN select pageid from pages
LOOP
RETURN NEXT P;
END LOOP;
RETURN;
END;$BODY$
LANGUAGE 'plpgsql' STABLE;
ALTER FUNCTION tests(int8) OWNER TO diglat_web;

====================================================
-- Table: pages
-- DROP TABLE pages;

CREATE TABLE pages
(
pageid int8 NOT NULL,
ppageid int8 NOT NULL DEFAULT 0,
name varchar(100),
status int4 DEFAULT 0,
CONSTRAINT pages_pkey PRIMARY KEY (pageid),
CONSTRAINT pages_in_pages_fkey FOREIGN KEY (ppageid) REFERENCES pages
(pageid) ON UPDATE RESTRICT ON DELETE RESTRICT,
CONSTRAINT pages_uniq UNIQUE (pageid, ppageid)
)
WITH OIDS;
====================================================

Actualy function is correct... and the same code run successfully on
other table.. there is the problem ?

Thanks

On Mar 11, 2005, at 5:54 AM, Juris Zeltins wrote:

> FOR P IN select pageid from pages
>

This way you are only getting the pageid column. I think what you want
is

FOR P in select * from pages

so that P contains the complete pages record.

John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL

Yep.. i have solved this problem by specifying
the correct return type and variable type (should be the same)

but as said, in some cases pl_exec executes with type conversion.
as real example - i have :

return type = SETOF new type "category_node(catid, pcatid)"
variable = R, SR -> RECORD

and

FOR R IN select * from ...
LOOP
RETURN NEXT R; /* add RECORD to SETOF_of_CATEGORY_NODE */
....

and works...
the problem seems is teh same - on altered tables there is some porblem
with this :)

Actualy - return type & variable in "RETURN NEXT" must be the same type.

// Solved

John DeSoi wrote:

>
> On Mar 11, 2005, at 5:54 AM, Juris Zeltins wrote:
>
>> FOR P IN select pageid from pages
>>
>
> This way you are only getting the pageid column. I think what you want is
>
> FOR P in select * from pages
>
> so that P contains the complete pages record.
>
>
> John DeSoi, Ph.D.
> http://pgedit.com/
> Power Tools for PostgreSQL
>
>