The "discountqty" will determine when "discountvalue" applies to separate product.
IF all "discountqty" = 1 then those discounts apply not "discountqty" = 2 or 3
Like to have dynamic DISCOUNT(S) based on productid giving my customers idea on "savings".
[productid = 1] discounts will not apply to [productid = 2]
the sum of discountvalue is to show total amount of DISCOUNTS (PERCENTAGE) based on the product which customer purchases.