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MySQL 8 Cookbook

You're reading from MySQL 8 Cookbook Over 150 recipes for high-performance database querying and administration

Product type Paperback

Published in Jan 2018

Publisher

ISBN-13 9781788395809

Length 446 pages

Edition 1st Edition

Tools

MySQL

Concepts

Database Administration

Author (1):

Karthik Appigatla

View More author details

Table of Contents (15) Chapters

Preface

1. MySQL 8 - Installing and Upgrading FREE CHAPTER

2. Using MySQL

3. Using MySQL (Advanced)

4. Configuring MySQL

5. Transactions

6. Binary Logging

7. Backups

8. Restoring Data

9. Replication

10. Table Maintenance

11. Managing Tablespace

12. Managing Logs

13. Performance Tuning

14. Security

The explain plan

How MySQL executes queries is one of the major factors of database performance. You can verify the MySQL execution plan using the EXPLAIN command. Starting from MySQL 5.7.2, you can use EXPLAIN to examine queries currently executing in other sessions. EXPLAIN FORMAT=JSON gives detailed information.

How to do it...

Let's get into the details.

Using EXPLAIN

The explain plan gives information on how the optimizer is going to execute the query. You just need to prefix the EXPLAIN keyword to the query:

mysql> EXPLAIN SELECT dept_name...

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Authors (1)

Karthik Appigatla

Karthik Appigatla

Karthik Appigatla is a highly reputed database architect and is very famous for performance tuning. He has been consulted by many companies all over the world for designing, performance tuning, building database infrastructure, and training. In his decade of experience, he has worked for companies such as Yahoo, Pythian, and Percona. Currently, he is working for LinkedIn, where he has innovated a new way of analyzing queries. He gave a talk about this at SRECon, Dublin in 2017.

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