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

DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` FUNCTION `vn`.`ticket_isTooLittle`(
	vSelf INT
)
	RETURNS tinyint(1)
	READS SQL DATA
BEGIN
/**
 * Check if the ticket is small based on the volume and amount parameters.
 * 
 * @param vSelf Id ticket
 * @return BOOL
 */
	DECLARE vIsTooLittle TINYINT(1);
	
	WITH tickets AS (
	SELECT addressFk, DATE(shipped) dated
		FROM vn.ticket 
		WHERE id = vSelf
	)
	SELECT (SUM(IFNULL(sv.litros, 0)) < vc.minTicketVolume 
			AND SUM(IFNULL(t.totalWithoutVat, 0)) < vc.minTicketValue) INTO vIsTooLittle
		FROM vn.ticket t
			JOIN tickets ts ON ts.addressFk = t.addressFk
			JOIN vn.volumeConfig vc
			LEFT JOIN vn.saleVolume sv ON sv.ticketFk = t.id
		WHERE t.shipped BETWEEN ts.dated AND util.dayEnd(ts.dated)
			AND sv.litros > 0
			AND t.totalWithoutVat > 0;

	RETURN vIsTooLittle;	
END$$
DELIMITER ;