DELIMITER $$
CREATE OR REPLACE DEFINER=`vn`@`localhost` FUNCTION `vn`.`ticket_CC_volume`(vTicketFk INT)
	RETURNS decimal(10,1)
	NOT DETERMINISTIC
	READS SQL DATA
BEGIN
	
	DECLARE vCC DECIMAL(10,1);

	SELECT sum(sv.volume * IF(i.itemPackingTypeFk = 'H', vc.dutchCompressionRate, 1)) / (p.volume / 1000000)
		INTO vCC
		FROM vn.saleVolume sv 
			JOIN vn.sale s ON s.id = sv.saleFk 
			JOIN vn.item i ON i.id = s.itemFk 
			JOIN vn.packaging p ON p.id = 'CC'
			JOIN vn.volumeConfig vc 
		WHERE sv.ticketFk = vTicketFk;
	
	RETURN vCC;

END$$
DELIMITER ;