DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`stockBought_calculate`()
BEGIN
/**
 * Inserts the purchase volume per buyer
 * into stockBought according to the current date.
 */
	DECLARE vDated DATE;
	SET vDated = util.VN_CURDATE();

	CREATE OR REPLACE TEMPORARY TABLE tStockBought
		SELECT workerFk, reserve 
			FROM stockBought 
			WHERE dated = vDated
				AND reserve;

	DELETE FROM stockBought WHERE dated = vDated;

	INSERT INTO stockBought (workerFk, bought, dated)
		SELECT it.workerFk,
				ROUND(SUM(
					(ac.conversionCoefficient * 
						(b.quantity / b.packing) * 
						buy_getVolume(b.id)
					) / (vc.trolleyM3 * 1000000)
				), 1),
				vDated
			FROM entry e
				JOIN travel t ON t.id = e.travelFk 
				JOIN warehouse w ON w.id = t.warehouseInFk
				JOIN buy b ON b.entryFk = e.id
				JOIN item i ON i.id = b.itemFk 
				JOIN itemType it ON it.id = i.typeFk
				JOIN auctionConfig ac
				JOIN volumeConfig vc
			WHERE t.shipped = vDated
				AND t.warehouseInFk = ac.warehouseFk
			GROUP BY it.workerFk;

	UPDATE stockBought s
			JOIN tStockBought ts ON ts.workerFk = s.workerFk
				SET s.reserve = ts.reserve
		WHERE s.dated = vDated;

	INSERT INTO stockBought (workerFk, reserve, dated)
		SELECT ts.workerFk, ts.reserve, vDated
			FROM tStockBought ts
			WHERE ts.workerFk NOT IN (SELECT workerFk FROM stockBought WHERE dated = vDated);

	DROP TEMPORARY TABLE tStockBought;
END$$
DELIMITER ;