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The MySQL® software delivers a very fast, multi-threaded, multi-user, and robust SQL (Structured Query Language) database server. MySQL Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed software. MySQL is a registered trademark of MySQL AB.
The MySQL software is Dual Licensed. Users can choose to use the MySQL software as an Open Source product under the terms of the GNU General Public License (http://www.fsf.org/licenses/) or can purchase a standard commercial license from MySQL AB. See http://www.mysql.com/company/legal/licensing/ for more information on our licensing policies.
The following list describes some sections of particular interest in this manual:
For a discussion about the capabilities of the MySQL Database Server, see Section 1.4.3, “The Main Features of MySQL”.
For future plans, see Section 1.6, “MySQL Development Roadmap”.
For a tutorial introduction to the MySQL Database Server, see Chapter 3, Tutorial.
For information about configuring and administering MySQL Server, see Chapter 5, Database Administration.
For information about setting up replication servers, see Chapter 6, Replication.
For answers to a number of questions that are often asked concerning the MySQL Database Server and its capabilities, see Appendix A, MySQL 5.0 Frequently Asked Questions.
For a list of currently known bugs and misfeatures, see Section B.1.8, “Known Issues in MySQL”.
For a list of all the contributors to this project, see Appendix G, Credits.
For a history of new features and bugfixes, see Appendix E, MySQL Change History.
For tips on porting the MySQL Database Software to new architectures or operating systems, see MySQL Internals: Porting.
For benchmarking information, see the
sql-bench benchmarking directory in your
To report errors (often called “bugs”), please use the instructions at Section 1.8, “How to Report Bugs or Problems”.
If you have found a sensitive security bug in MySQL Server, please
let us know immediately by sending an email message to
This is the Reference Manual for the MySQL Database System,
version 5.0, through release 5.0.46. It is
not intended for use with older versions of the MySQL software due
to the many functional and other differences between MySQL
5.0 and previous versions. If you are using a version
4.1 release of the MySQL software, please refer to
MySQL 3.23, 4.0, 4.1 Reference Manual,
which covers the 3.23, 4.0, and 4.1 series of MySQL software
releases. Differences between minor versions of MySQL
5.0 are noted in the present text with reference to
release numbers (5.0.
Because this manual serves as a reference, it does not provide general instruction on SQL or relational database concepts. It also does not teach you how to use your operating system or command-line interpreter.
The MySQL Database Software is under constant development, and the Reference Manual is updated frequently as well. The most recent version of the manual is available online in searchable form at http://dev.mysql.com/doc/. Other formats also are available there, including HTML, PDF, and Windows CHM versions.
The Reference Manual source files are written in DocBook XML format. The HTML version and other formats are produced automatically, primarily using the DocBook XSL stylesheets. For information about DocBook, see http://docbook.org/
The DocBook XML sources of this manual are available from http://dev.mysql.com/tech-resources/sources.html. You can check out a copy of the documentation repository with this command:
svn checkout http://svn.mysql.com/svnpublic/mysqldoc/
If you have questions about using MySQL, you can ask them using
our mailing lists or forums. See Section 1.7.1, “MySQL Mailing Lists”,
and Section 1.7.2, “MySQL Community Support at the MySQL Forums”. If you have suggestions concerning
additions or corrections to the manual itself, please send them to
the documentation team at
This manual was originally written by David Axmark and Michael “Monty” Widenius. It is maintained by the MySQL Documentation Team, consisting of Paul DuBois, Stefan Hinz, Jon Stephens, Martin MC Brown, and Peter Lavin. For the many other contributors, see Appendix G, Credits.
The copyright to this manual is owned by the Swedish company MySQL AB. MySQL® and the MySQL logo are registered trademarks of MySQL AB. Other trademarks and registered trademarks referred to in this manual are the property of their respective owners, and are used for identification purposes only.
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