Re: [postgres] Re: Recursive SETOF function

Sorry about that... try this:

CREATE OR REPLACE FUNCTION svp_getparentproviderids
(INTEGER)
RETURNS SETOF svp_getparentproviderids_uid_type
AS '
DECLARE
child_provider ALIAS FOR $1;
cid svp_getparentproviderids_uid_type%ROWTYPE;
tmp_cid INTEGER;
BEGIN
SELECT INTO tmp_cid count(*) FROM providers WHERE uid =child_provider;
IF tmp_cid = 0 THEN
RAISE EXCEPTION ''Inexistent ID --> %'', child_provider;
RETURN;
END IF;
cid.uid := child_provider;
LOOP
EXIT WHEN tmp_cid IS NULL;
RETURN NEXT cid;
SELECT INTO tmp_cid parent_id FROM providers WHERE uid=cid.uid;
END LOOP;
RETURN;
END;' LANGUAGE 'plpgsql';

On Mon, 22 Nov 2004 12:51:41 -0600, Richard Rowell
<richard(at)bowmansystems(dot)com> wrote:
> I have been fiddling with what you sent. I have it working mostly, save
> for I keep getting syntax errors on the "RETURN NEXT cid;" line. If I
> remove this line then the function works ( but returns nothing of
> course). Any ideas?
>
> sp_demo_505=# CREATE OR REPLACE FUNCTION svp_getparentproviderids
> (INTEGER)
> RETURNS SETOF svp_getparentproviderids_uid_type
> AS '
> DECLARE
> child_provider ALIAS FOR $1;
> cid INTEGER;
> BEGIN
> SELECT INTO cid count(*) FROM providers WHERE uid =child_provider;
> IF cid = 0 THEN
> RAISE EXCEPTION ''Inexistent ID --> %'', child_provider;
> RETURN;
> END IF;
> cid := child_provider;
> LOOP
> EXIT WHEN cid IS NULL;
> RETURN NEXT cid;
> SELECT INTO cid parent_id FROM providers WHERE uid=cid;
> END LOOP;
> RETURN;
> END;' LANGUAGE 'plpgsql';
> CREATE FUNCTION
> sp_demo_505=# select * from svp_getparentproviderids(21112);
> ERROR: incorrect argument to RETURN NEXT at or near "cid"
> CONTEXT: compile of PL/pgSQL function "svp_getparentproviderids" near
> line 13
>
>

--
Mike Rylander
mrylander(at)gmail(dot)com
GPLS -- PINES Development
Database Developer