Sams Teach Yourself Transact-SQL in 21 Days, Second Edition

Writing Your First Stored Procedure

This week, we'll look at various approaches to handling orders and the related order details records in the Northwind database. We'll use the Shopping Cart analogy used by most commerce Web sites, in which you can freely add and remove items from your "cart" (that is, your order) until you close the order. We will require five procedures:

• Add an item to the cart

• Remove an item from the cart

• Display the contents of the cart

• Cancel the order

• Close the order

First, we'll write the first two procedures, and then you will write the next two as part of the exercises at the end of this lesson. We'll write the final procedure in Day 16, "Optimizing Stored Procedures."

In order to use the shopping cart method, we'll ...