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- set serveroutput on
- CREATE or REPLACE TRIGGER total_ok
- AFTER INSERT or DELETE or UPDATE OF subtotal ON item
- FOR EACH ROW
- DECLARE
- v_total pedido.total%TYPE;
- BEGIN
- IF DELETING THEN
- SELECT SUM(subtotal)
- INTO v_total
- FROM item
- WHERE pedidoid = :OLD.pedidoid;
- UPDATE pedido SET total=v_total WHERE pedidoid= :OLD.pedidoid;
- dbms_output.put_line('Tras un borrado se a actualizado el total.');
- ELSIF INSERTING OR UPDATING THEN
- SELECT SUM(subtotal)
- INTO v_total
- FROM item
- WHERE pedidoid = :NEW.pedidoid;
- UPDATE pedido SET total=v_total WHERE pedidoid= :NEW.pedidoid;
- dbms_output.put_line('Tras una insección o una actualización se a actualizado el total.');
- END IF;
- END;
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