"usp_ShoppingCartItemCount" Stored Procedure

Description:

This stored procedure returns a count of all the distinct products in a user's shopping cart.

Definition:
CREATE Procedure usp_ShoppingCartItemCount
(
    @CartID    nvarchar(50),
    @ItemCount int OUTPUT
)
AS

SELECT 
    @ItemCount = COUNT(ProductID)
    
FROM 
    Sales.ShoppingCartItem 
    
WHERE 
    ShoppingCartID = @CartID;

Database Tables Used:

ShoppingCartItem:   The ShoppingCartItem table keeps track of the items a user has purchased.  Its primary key is the ShoppingCartItemID field.  The ShoppingCartID is a string which is used to identify the user who owns the basket of items.  There is a many to one relationship between the ShoppingCartItem table and the Product table.  Note that if not Quantity is supplied, a default of 1 is entered.