salix/db/routines/vn/functions/ticketGetTotal.sql

DELIMITER $$
CREATE OR REPLACE DEFINER=`vn`@`localhost` FUNCTION `vn`.`ticketGetTotal`(vTicketId INT)
	RETURNS decimal(10,2)
	DETERMINISTIC
	READS SQL DATA
BEGIN
/**
 * Calcula el total con IVA de un ticket.
 *
 * @param vTicketId Identificador del ticket
 * @return Total del ticket
 */
	DECLARE vTotal DECIMAL(10,2);

	DROP TEMPORARY TABLE IF EXISTS tmp.ticket;
	CREATE TEMPORARY TABLE tmp.ticket
		ENGINE = MEMORY
		SELECT vTicketId ticketFk;

	CALL ticketGetTotal(NULL);

	SELECT total INTO vTotal FROM tmp.ticketTotal;

	DROP TEMPORARY TABLE
		tmp.ticket,
		tmp.ticketTotal;
	
	RETURN vTotal;
    
END$$
DELIMITER ;