Re: PL/pgSQL loops?
От
Stephan Szabo
Тема
Re: PL/pgSQL loops?
Дата
Msg-id
20011128194857.G37828-100000@megazone23.bigpanda.com
Ответ на
Re: PL/pgSQL loops? (Johnny J\xF8rgensen)
Список
Дерево обсуждения
Re: PL/pgSQL loops? Carl van Tast <vanTast@Pivot.at>
Something like the below seemed to make it work for me under
7.2b3:
CREATE FUNCTION cleanup_order(integer,integer)RETURNS booleanAS ' -- [INT order_id] cleanup_order ( INT person_id, INT order_id )-- purpose: when a session is interrupted, the order is left open, when the next session is initiated,-- transfer the items to a new order, and mark the older order void ( so we can tell if f.x. people abort-- an order in the payment phase, e.g. indicating they dont like our payment options )
DECLARE p_id ALIAS FOR $1; o_id ALIAS FOR $2; ord record; itm record;
BEGIN
-- loop through existing open orders from this person, excluding the first, being the active one FOR ord IN SELECT id FROM ordre WHERE person_id = p_id AND status = 1 AND id != o_id LOOP -- loop through items linked to the currently looped order FOR itm IN SELECT id FROM item WHERE ordre_id = ord.id LOOP
-- relink item to latest order UPDATE item SET ordre_id = o_id WHERE id = itm.id;
END LOOP;
-- mark old orders as void UPDATE ordre SET status = 0 WHERE id = ord.id;
END LOOP;
RETURN true;
END;'LANGUAGE 'plpgsql';
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