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MySQL 8 Query Performance Tuning: A Systematic Method for Improving Execution Speeds
book

MySQL 8 Query Performance Tuning: A Systematic Method for Improving Execution Speeds

by Jesper Wisborg Krogh
March 2020
Intermediate to advanced
974 pages
20h 21m
English
Apress
Content preview from MySQL 8 Query Performance Tuning: A Systematic Method for Improving Execution Speeds
© Jesper Wisborg Krogh 2020
J. W. KroghMySQL 8 Query Performance Tuninghttps://doi.org/10.1007/978-1-4842-5584-1_24

24. Change the Query Plan

Jesper Wisborg Krogh1 
(1)
Hornsby, NSW, Australia
 

There are several possible reasons why a poorly performing query does not work as expected. This ranges from the query plainly being wrong over a poor schema to lower-level causes such as a nonoptimal query plan or resource contention. This chapter will discuss some common cases and solutions.

The chapter starts out introducing the test data used for most of the examples in the chapter and discussing the symptoms of excessive full table scans. Then it is covered how errors in the query can cause severe performance problems and why indexes cannot always be used ...

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Publisher Resources

ISBN: 9781484255841Purchase LinkPublisher Website