Chapter 23. Working with Stored Procedures

In this chapter, you’ll learn what stored procedures are, why they are used, and how they are used. You’ll also look at the basic syntax for creating and using them.

Understanding Stored Procedures

Note

Requires MySQL 5Support for stored procedures was added to MySQL 5. As such, this chapter is applicable to MySQL 5 or later only.

Most of the SQL statements that we’ve used thus far are simple in that they use a single statement against one or more tables. Not all operations are that simple—often, multiple statements will be needed to perform a complete operation. For example, consider the following scenario:

  • To process an order, checks must be made to ensure that items are in stock.

  • If items are in stock, ...

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