Re: return setof record - strange behavior

2008/8/4 Marcin Krawczyk <jankes(dot)mk(at)gmail(dot)com>

> Hi everybody. Can anyone enlighten me what's wrong with this function :
>
> CREATE OR REPLACE FUNCTION month_year(mon integer, intv integer, OUT
> ro integer, OUT mi integer)
> RETURNS SETOF record AS
> $BODY$
> DECLARE
> w record;
> cy integer := EXTRACT (YEAR FROM current_date);
>
> BEGIN
>
> FOR w IN
> SELECT (CASE WHEN m > 12 THEN cy + 1 ELSE cy END)::integer, (CASE
> WHEN m > 12 THEN m - 12 ELSE m END)::integer
> FROM generate_series(mon + 1, mon + intv) AS m
> LOOP
> RETURN next;
> END LOOP;
>
> END;
>
> $BODY$
> LANGUAGE 'plpgsql' VOLATILE;
>
>
> SELECT * FROM month_year(10, 5);
>
> Why does it return empty SET ? The amount of rows is correct though ....
> I'm running 8.1.4
>
> regards
> mk
>
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Hi

merlin=# CREATE OR REPLACE FUNCTION month_year(mon integer, intv integer)
RETURNS SETOF record AS
$BODY$
DECLARE
w record;
cy integer := EXTRACT (YEAR FROM current_date);
BEGIN
FOR w IN
SELECT (CASE WHEN m > 12 THEN cy + 1 ELSE cy END)::integer, (CASE
WHEN m > 12 THEN m - 12 ELSE m END)::integer
FROM generate_series(mon + 1, mon + intv) AS m
LOOP
RETURN next w;
END LOOP;
END;
$BODY$
LANGUAGE 'plpgsql' VOLATILE;

and

merlin=# SELECT * FROM month_year(10, 5) as (x integer, y integer);
x | y
------+----
2008 | 11
2008 | 12
2009 | 1
2009 | 2
2009 | 3
(5 rows)

without output params

--
--
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