Question

所以当我将行插入名为'auxi'的表中时，我有以下函数触发器调用。它似乎不起作用，因为我的表上有值为'id_usuario'的NULL，并且触发器应该避免这种情况。

CREATE OR REPLACE FUNCTION firstRestriction() RETURNS Trigger
AS $$
DECLARE
    operation boolean = false;
BEGIN
    RAISE NOTICE 'HERE %',operation;
    operation = operation OR isNULL(new.periodo, 'periodo');
    operation = operation OR isNULL(new.id_usuario, 'id_usuario');
    operation = operation OR isNULL(new.fecha_hora_retiro, 'fecha_hora_retiro');
    operation = operation OR isNULL(new.origen_estacion, 'origen_estacion');
    operation = operation OR isNULL(new.destino_estacion, 'destino_estacion');
    operation = operation OR isNULL(new.tiempo_uso, 'tiempo_uso');
/*operation = operation OR isLessThanZero(new.tiempo_uso, 'tiempo_uso');*/

    IF operation THEN
        raise notice 'No se pudo insertar % % % % % %',new.periodo, new.id_usuario, new.fecha_hora_retiro,new.origen_estacion 
                                                   ,new.destino_estacion, new.tiempo_uso; 
        return NULL;
    ELSE

        return new;
    END IF;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER checkFirstRestriction
 BEFORE INSERT ON auxi
 FOR EACH ROW
 EXECUTE PROCEDURE firstRestriction();

然后我做

 CREATE OR REPLACE FUNCTION cond1()
 RETURNS VOID AS $$

 BEGIN  
    INSERT INTO auxi
    SELECT *
    FROM datos_recorrido;

 END;
 $$ LANGUAGE PLPGSQL;

isNull也是以下函数

 CREATE OR REPLACE FUNCTION isNULL(field anyelement, information TEXT) RETURNS boolean
 AS $$
 BEGIN
     IF field IS NULL THEN
      raise notice 'El campo % es NULL', information;
      return true;
   ELSE
      return false;
   END IF;
 END;
 $$ LANGUAGE plpgsql;

然后在某些时候我打电话给我的功能cond1（）。我认为我的触发器永远不会被调用。这有可能吗？

触发没有被调用，为什么？

0 个答案: