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You're reading from  MariaDB Cookbook

Product typeBook
Published inMar 2014
Reading LevelBeginner
Publisher
ISBN-139781783284399
Edition1st Edition
Languages
SQL
Tools
MariaDB
Concepts
Databases
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Author (1)
Daniel Bartholomew
Daniel Bartholomew
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Daniel Bartholomew

Daniel Bartholomew has been using Linux since 1997 and databases since 1998. In addition to this book, he has also written MariaDB Cookbook, Packt Publishing, and dozens of articles for various magazines, including The Linux Journal, Linux Pro, Ubuntu User, and Tux. He became involved with the MariaDB project shortly after it began in early 2009 and continues to be involved to this day. He currently works for MariaDB, Inc. and splits his time between managing MariaDB releases, documentation, and maintaining various bits and pieces that keep the MariaDB project running smoothly.
Read more about Daniel Bartholomew

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Controlling MariaDB optimizer strategies

Starting with MariaDB 5.3 and continuing with all major releases since, various optimizations have been introduced that improve the core performance of MariaDB. To keep upgrades as compatible and as trouble-free as possible or because it is only useful in certain limited instances, many of these optimizations are turned off by default. This recipe is about enabling optimizations which are turned off by default.

In this recipe, we will enable the Multi-Range Read optimizations, but the basic concepts apply to control any of the optimizer_switch flags.

How to do it...

  1. Launch the mysql command-line client application and connect to our MariaDB server as the root user or as a user with the SUPER privilege.

  2. Show the current status of all optimizer_switch flags with the following command:

    SELECT @@optimizer_switch\G

  3. The output of the previous command will be similar to the following screenshot. There may be some differences depending on our local server settings...

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MariaDB Cookbook
Published in: Mar 2014Publisher: ISBN-13: 9781783284399
© 2014 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Daniel Bartholomew

Daniel Bartholomew has been using Linux since 1997 and databases since 1998. In addition to this book, he has also written MariaDB Cookbook, Packt Publishing, and dozens of articles for various magazines, including The Linux Journal, Linux Pro, Ubuntu User, and Tux. He became involved with the MariaDB project shortly after it began in early 2009 and continues to be involved to this day. He currently works for MariaDB, Inc. and splits his time between managing MariaDB releases, documentation, and maintaining various bits and pieces that keep the MariaDB project running smoothly.
Read more about Daniel Bartholomew

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