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

DELIMITER $$
CREATE OR REPLACE DEFINER=`vn`@`localhost` FUNCTION `vn`.`currency_getCommission`(vSelf INT)
	RETURNS int(11)
	DETERMINISTIC
BEGIN
/**
 * Devuelve el tipo de cambio en el dia de hoy dada el tipo de moneda
 *
 * @param vSelf id del tipo de moneda
 * @return devuelve la comision
 */
	DECLARE vCommission INT;

    SELECT ROUND(-100 * (1 - (1 / r.value))) INTO vCommission
		FROM referenceCurrent r
		WHERE r.currencyFk = vSelf
			AND r.`dated` <= util.VN_CURDATE()
		ORDER BY r.`dated` DESC
		LIMIT 1;

	RETURN vCommission;
END$$
DELIMITER ;