Question

I have the following plpgsql function that does work great on pg 8.3 and above but I need to translate it back to a pg 8.1 database and I can’t seam to get it right.

Any tips? I need to get rid of the “RETURN QUERY” as it was not yet introduced in 8.1…

CREATE OR REPLACE FUNCTION specie_children (specie_id INT, self BOOLEAN)
      RETURNS SETOF specie AS
    $BODY$
    DECLARE
      r specie%ROWTYPE;
    BEGIN
      IF self THEN
        RETURN QUERY SELECT * FROM specie WHERE specieid = specie_id;
      END IF;
      FOR r IN SELECT * FROM specie WHERE parent = specie_id
      LOOP
        RETURN NEXT r;
        RETURN QUERY SELECT * FROM specie_children(r.specieid, FALSE);
      END LOOP;
      RETURN;
    END
    $BODY$
    LANGUAGE 'plpgsql';

How do I translate this ?

Answer 1

RETURN QUERY SELECT * FROM specie_children(r.specieid, FALSE);

could be rewritten as

for r2 in select * from specie_children(r.specieid, FALSE)
loop
    return next r2
end loop