Pertimbangkan ini sebagian besar disederhanakan versi fungsi plpgsql . Anda . Harus bekerja di PostgreSQL 8.3 :
CREATE OR REPLACE FUNCTION x.fnk_abonemento_nariai(_prm_item integer)
RETURNS SETOF subject_items AS
$BODY$
DECLARE
_kiek integer := num_records -- get number at declaration time
FROM subjekto_abonementai WHERE num_id = _prm_item;
_counter integer;
BEGIN
RETURN QUERY -- get the records that actualy exist
SELECT sub_item, sal_subject
FROM sal_subject
WHERE sub_item = prm_item;
GET DIAGNOSTICS _counter = ROW_COUNT; -- save number of returned rows.
RETURN QUERY
SELECT NULL, NULL -- fill the rest with null values
FROM generate_series(_counter + 1, _kiek);
END;
$BODY$ LANGUAGE plpgsql VOLATILE STRICT;
Detail tentang plpgsql di manual (tautan ke versi 8.3).
