DELIMITER $$
CREATE OR REPLACE DEFINER=`vn`@`localhost` FUNCTION `vn`.`ticket_getWeight`(vTicketFk INT)
	RETURNS decimal(10,3)
	NOT DETERMINISTIC
	READS SQL DATA
BEGIN
/**
 * Devuelve el peso total del ticket
 * 
 * @return Total peso
 */
	
	DECLARE vWeight DECIMAL(10,3);

    SELECT sum(weight) INTO vWeight
		FROM saleVolume
		WHERE ticketFk = vTicketFk;
	
    RETURN vWeight;

END$$
DELIMITER ;