Forgot to mention, I am using Windows 2003, PostgreSQL version 8.0.1.
-----Original Message-----
From: pgsql-novice-owner@postgresql.org
[mailto:pgsql-novice-owner@postgresql.org]On Behalf Of Lane Van Ingen
Sent: Tuesday, January 10, 2006 10:43 AM
To: pgsql-novice@postgresql.org
Subject: [NOVICE] Error Returned by A Function
Hi all, I have a short function below that is returning me an error, and I
can't figure out what I should do to fix it. Can anyone help? Archives have
not helped. The error I get is:
select * from current_neighbors(2);
ERROR: cannot assign non-composite value to a row variable
CONTEXT: PL/pgSQL function "current_neighbors" line 15 at assignment
------------------
CREATE TYPE typ_remote_net AS
(remote_net varchar);
CREATE OR REPLACE FUNCTION current_neighbors(integer)
RETURNS SETOF typ_remote_net AS
$BODY$
DECLARE
work_if_id ALIAS FOR $1;
first_record char(1);
last_remote varchar;
last_neighbor_state integer;
output_count integer := 0;
returnValue typ_remote_net;
workarea adns_neighbor_history%ROWTYPE;
BEGIN
returnValue := 'none';
first_record := 'Y';
FOR workarea IN
select if_id, updated_time, remote_net, neighbor_state,
last_checked
from adns_neighbor_history
where if_id = work_if_id
order by BY 1,3,2
loop
if first_record = 'N' then
if workarea.remote_net = last_remote then
if workarea.neighbor_state = last_neighborstate then
-- same values, no action required
NULL;
else
-- store latest neighbor state
last_neighbor_state := workarea.neighbor_state;
end if;
else
-- see if last remote needs to be reported
if last_neighborstate > 0 then
returnValue = last_remote;
RETURN NEXT returnValue;
output_count := output_count + 1;
end if;
last_remote := workarea.remote_net;
last_neighbor_state := workarea.neighbor_state;
end if;
else
first_record = 'N';
last_remote := workarea.remote_net;
last_neighbor_state := workarea.neighbor_state;
end if;
end loop;
if (last_neighbor_state > 0) then
RETURN NEXT returnValue;
else
if output_count = 0 then
returnValue := 'none';
RETURN NEXT returnValue;
end if;
end if;
RETURN;
END
$BODY$
LANGUAGE 'plpgsql' VOLATILE;
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