Re: PL/pgSQL loops?
От | Stephan Szabo |
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Тема | Re: PL/pgSQL loops? |
Дата | |
Msg-id | 20011128194857.G37828-100000@megazone23.bigpanda.com обсуждение исходный текст |
Ответ на | Re: PL/pgSQL loops? ("Johnny J\xF8rgensen" <pgsql@halfahead.dk>) |
Ответы |
Re: PL/pgSQL loops?
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Список | pgsql-sql |
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 idFROM ordre WHERE person_id = p_id AND status = 1 AND id != o_id LOOP -- loop through items linked to the currentlylooped 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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