Effective MySQL : optimizing SQL statements ; [practical knowledge ...
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Effective MySQL : optimizing SQL statements ; [practical knowledge ...
CONTENTS. Acknoledgements xi. Introduction xii. 1. The Five Minute DBA. 1.
Identifying Performance Problems. 2. Finding a Slow SQL Statement. 2.
Confirming ...
\
ORACLG
Oracle Press
Effective
MySQL
Optimizing SQL
Statements
Ronald Bradford
Mc Grauu Hill
CONTENTS
Acknoledgements
xi
Introduction 1
xii
The Five Minute DBA
1
Performance Problems
Identifying Finding
a
Slow
Confirming the Optimizing
Your
SQL
2
Statement
Slow
2
Query
2 4
Query
What You Should Not Do
5
Confirm Your
5
The Correct
Optimization
Approach
6
An Alternative Solution
7
Conclusion 2
The Essential
7
Analysis
Commands
9
EXPLAIN
10
EXPLAIN PARTITIONS
11
EXPLAIN EXTENDED
12
SHOW CREATE TABLE
13
SHOW INDEXES
14
SHOW TABLE STATUS
15
SHOW STATUS
17
SHOW VARIABLES
19
INFORMATIONSCHEMA
20
Conclusion 3
•
Understanding MySQL Indexes Example MySQL Data
Tables
20
23 24
Index Usages
25
Integrity
25
Optimizing
Data Access
Table Joins
Sorting
26 28
Results
28 28
Aggregation
V
Contents
vi
About
28
Storage Engines
Index Terminology Index
MySQL
Types
Index Data Structure
Theory
MySQL Implementation MySQL Partitioning
43
Conclusion
4
^
Creating MySQL Indexes
46
Tables
Example
47
Existing Indexes
48
Single Column Indexes
48
Syntax
Restricting Rows with Joining Tables with
an
an
Index
Index
Understanding Index Cardinality Using Indexes for Selecting
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