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

DELIMITER $$
CREATE OR REPLACE DEFINER=`vn`@`localhost` FUNCTION `vn`.`buy_getLastWithoutInventory`(
	vItemFk INT,
	vWarehouseFk INT
)
	RETURNS int(11)
	DETERMINISTIC
BEGIN
/**
 * Retorna la última compra que no sea inventario.
 *
 * @param vItemFk Id del artículo
 * @param vWarehouseFk Id del almacén
 * @return Id de compra
 */
	DECLARE vBuyFk INT;

	SELECT b.id INTO vBuyFk
		FROM buy b
			JOIN entry e ON e.id = b.entryFk
			JOIN travel t ON t.id = e.travelFk
		WHERE e.id <> (SELECT defaultEntry FROM entryConfig)
			AND e.supplierFk <> (SELECT supplierFk FROM inventoryConfig)
			AND e.typeFk <> 'inventory'
			AND b.itemFk = vItemFk
			AND (t.warehouseInFk = vWarehouseFk OR t.warehouseInFk IS NULL)
		ORDER BY ABS(DATEDIFF(util.VN_CURDATE(), t.landed)), e.created DESC
		LIMIT 1;

	RETURN vBuyFk;
END$$
DELIMITER ;