DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` FUNCTION `vn`.`isPalletHomogeneus`(vExpedition INT)
	RETURNS tinyint(1)
	NOT DETERMINISTIC
	READS SQL DATA
BEGIN
	DECLARE vScanId INT;
	DECLARE vDistinctRoutesInThePallet INT;

	SELECT scan_id INTO vScanId
		FROM vn2008.scan_line
		WHERE code = vExpedition
		LIMIT 1;

		SELECT COUNT(*) INTO vDistinctRoutesInThePallet
		FROM (
			SELECT DISTINCT t.routeFk
			FROM vn2008.scan_line sl
				JOIN vn2008.expeditions e ON e.expeditions_id = sl.code
				JOIN ticket t ON t.id = e.ticket_id
			WHERE sl.scan_id = vScanId
				AND t.routeFk
		) t1;
			
	RETURN vDistinctRoutesInThePallet = 1;
END$$
DELIMITER ;