Local variables can be declared within stored procedures using the DECLARE statement. Variable names follow the same naming rules as MySQL table column names and can be of any MySQL data type. You can give variables an initial value with the DEFAULT clause and assign them new values using the SET command, as shown in Figure 2-5.
Part I: Stored Programming Fundamentals
Introduction to MySQL Stored Programs
MySQL Stored Programming Tutorial
Language Fundamentals
Blocks, Conditional Statements, and Iterative Programming
Using SQL in Stored Programming
Error Handling
Part II: Stored Program Construction
Creating and Maintaining Stored Programs
Transaction Management
MySQL Built-in Functions
Stored Functions
Triggers
Part III: Using MySQL Stored Programs in Applications
Using MySQL Stored Programs in Applications
Using MySQL Stored Programs with PHP
Using MySQL Stored Programs with Java
Using MySQL Stored Programs with Perl
Using MySQL Stored Programs with Python
Using MySQL Stored Programs with .NET
Part IV: Optimizing Stored Programs
Stored Program Security
Tuning Stored Programs and Their SQL
Basic SQL Tuning
Advanced SQL Tuning
Optimizing Stored Program Code
Best Practices in MySQL Stored Program Development