Expressions
An expression is a combination of literals, variables, and operators that resolves to some value. Conditional execution and flow-control statements usually depend on the value of an expression to determine loop continuation or code branching.
Example 3-12 shows a variety of expressions .
Example 3-12. Examples of expressions
Myvariable_name Myvariable_name+1 ABS(Myvariable_name) 3.14159 IF(Myvariable='M','Male','Female') (2+4)/12 |
Part I: Stored Programming Fundamentals
Introduction to MySQL Stored Programs
- Introduction to MySQL Stored Programs
- What Is a Stored Program?
- A Quick Tour
- Resources for Developers Using Stored Programs
- Some Words of Advice for Developers
- Conclusion
MySQL Stored Programming Tutorial
- MySQL Stored Programming Tutorial
- What You Will Need
- Our First Stored Procedure
- Variables
- Parameters
- Conditional Execution
- Loops
- Dealing with Errors
- Interacting with the Database
- Calling Stored Programs from Stored Programs
- Putting It All Together
- Stored Functions
- Triggers
- Calling a Stored Procedure from PHP
- Conclusion
Language Fundamentals
- Language Fundamentals
- Variables, Literals, Parameters, and Comments
- Operators
- Expressions
- Built-in Functions
- Data Types
- MySQL 5 Strict Mode
- Conclusion
Blocks, Conditional Statements, and Iterative Programming
- Blocks, Conditional Statements, and Iterative Programming
- Block Structure of Stored Programs
- Conditional Control
- Iterative Processing with Loops
- Conclusion
Using SQL in Stored Programming
- Using SQL in Stored Programming
- Using Non-SELECT SQL in Stored Programs
- Using SELECT Statements with an INTO Clause
- Creating and Using Cursors
- Using Unbounded SELECT Statements
- Performing Dynamic SQL with Prepared Statements
- Handling SQL Errors: A Preview
- Conclusion
Error Handling
- Error Handling
- Introduction to Error Handling
- Condition Handlers
- Named Conditions
- Missing SQL:2003 Features
- Putting It All Together
- Handling Stored Program Errors in the Calling Application
- Conclusion
Part II: Stored Program Construction
Creating and Maintaining Stored Programs
- Creating and Maintaining Stored Programs
- Creating Stored Programs
- Editing an Existing Stored Program
- SQL Statements for Managing Stored Programs
- Getting Information About Stored Programs
- Conclusion
Transaction Management
- Transaction Management
- Transactional Support in MySQL
- Defining a Transaction
- Working with Savepoints
- Transactions and Locks
- Transaction Design Guidelines
- Conclusion
MySQL Built-in Functions
- MySQL Built-in Functions
- String Functions
- Numeric Functions
- Date and Time Functions
- Other Functions
- Conclusion
Stored Functions
- Stored Functions
- Creating Stored Functions
- SQL Statements in Stored Functions
- Calling Stored Functions
- Using Stored Functions in SQL
- Conclusion
Triggers
Part III: Using MySQL Stored Programs in Applications
Using MySQL Stored Programs in Applications
- Using MySQL Stored Programs in Applications
- The Pros and Cons of Stored Programs in Modern Applications
- Advantages of Stored Programs
- Disadvantages of Stored Programs
- Calling Stored Programs from Application Code
- Conclusion
Using MySQL Stored Programs with PHP
- Using MySQL Stored Programs with PHP
- Options for Using MySQL with PHP
- Using PHP with the mysqli Extension
- Using MySQL with PHP Data Objects
- Conclusion
Using MySQL Stored Programs with Java
- Using MySQL Stored Programs with Java
- Review of JDBC Basics
- Using Stored Programs in JDBC
- Stored Programs and J2EE Applications
- Using Stored Procedures with Hibernate
- Using Stored Procedures with Spring
- Conclusion
Using MySQL Stored Programs with Perl
- Using MySQL Stored Programs with Perl
- Review of Perl DBD::mysql Basics
- Executing Stored Programs with DBD::mysql
- Conclusion
Using MySQL Stored Programs with Python
- Using MySQL Stored Programs with Python
- Installing the MySQLdb Extension
- MySQLdb Basics
- Using Stored Programs with MySQLdb
- A Complete Example
- Conclusion
Using MySQL Stored Programs with .NET
- Using MySQL Stored Programs with .NET
- Review of ADO.NET Basics
- Using Stored Programs in ADO.NET
- Using Stored Programs in ASP.NET
- Conclusion
Part IV: Optimizing Stored Programs
Stored Program Security
- Stored Program Security
- Permissions Required for Stored Programs
- Execution Mode Options for Stored Programs
- Stored Programs and Code Injection
- Conclusion
Tuning Stored Programs and Their SQL
- Tuning Stored Programs and Their SQL
- Why SQL Tuning Is So Important
- How MySQL Processes SQL
- SQL Tuning Statements and Practices
- About the Upcoming Examples
- Conclusion
Basic SQL Tuning
Advanced SQL Tuning
- Advanced SQL Tuning
- Tuning Subqueries
- Tuning Anti-Joins Using Subqueries
- Tuning Subqueries in the FROM Clause
- Tuning ORDER and GROUP BY
- Tuning DML (INSERT, UPDATE, DELETE)
- Conclusion
Optimizing Stored Program Code
- Optimizing Stored Program Code
- Performance Characteristics of Stored Programs
- How Fast Is the Stored Program Language?
- Reducing Network Traffic with Stored Programs
- Stored Programs as an Alternative to Expensive SQL
- Optimizing Loops
- IF and CASE Statements
- Recursion
- Cursors
- Trigger Overhead
- Conclusion
Best Practices in MySQL Stored Program Development
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Pages: 208
- Using SQL Data Definition Language (DDL) to Create Data Tables and Other Database Objects
- Understanding SQL Transactions and Transaction Logs
- Performing Multiple-table Queries and Creating SQL Data Views
- Writing External Applications to Query and Manipulate Database Data
- Writing Advanced Queries and Subqueries
