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refman-5.7-en.a4.pdf
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详细说明:MySQL 5.7官方参考手册
包括MySQL NDB Cluster 7.5和NDB Cluster 7.6
抽象
这是MySQL™参考手册。它分别记录了MySQL 5.7到5.7.28,以及基于NDB5.7.27-ndb-7.5.15 版本7.5的NDB Cluster版本 。它可能包括尚未发布的MySQL版本功能的文档。有关已发布的版本的信息,请参阅 MySQL 5.7发行说明。
MySQL 5.7功能。 本手册介绍了每个版本的MySQL 5.7中未包含的功能; 这些功能可能不包含在许可给您的MySQL 5.7版本中。如果您对MySQL 5.7版本中包含的功能有任何疑问,请参阅MySQL 5.7许可协议或联系您的Oracle销售代表。
有关详细说明每个版本中的更改的说明,请参阅 MySQL 5.7发行说明。
有关法律信息(包括许可信息),请参阅 前言和法律声明。
有关使用MySQL的帮助,请访问 MySQL论坛,在那里您可以与其他MySQL用户讨论您的问题。
文件生成于:2019-06-30(修订:62511)Table of contents
Preface and Legal Notices
XXV
1 General Information
1.1 About this manual
1.2 Typographical and Syntax Conventions
1.3 Overview of the My sQL Database management system
4
1.3.1 What is MySQL?…
1.3.2 The Main Features of My SQL
1.3.3 History of MySQL
1. 4 What s n
MySQL 5.7
1.5 Server and Status Variables and Options Added, Deprecated, or Removed in MySQL
5.7
,23
1.6 MySQL Information Sources
1.6.1 My SQL Websites∴…
39
1.6.2 MySQL Mailing Lists
1.6.3 My SQL Community Support at the My SQL Forums
1.6.4 MySQL Community Support on Internet Relay Chat (IRC)
42
1.6.5 My SQL Enterprise
42
7 How to Report Bugs or Problems
1.8 My SQL Standards Compliance
1.8. 1 My SQL Extensions to Standard SQL
48
1.8.2 MySQL Differences from Standard SQL
51
1.8.3 How MySQL Deals with Constraints
52
1. 9 Credits
56
1.9.1 Contributors to MySQL
56
1.9.2 Documenters and translators
b
1.9.3 Packages that support MySQL_……
1.9.4 Tools that were used to create Mysd'.
61
62
1.9.5 Supporters of MysQL……
62
2 Installing and Upgrading MySQL
65
2.1 General Installation guidance
67
2.1.1 Which MysQL Version and distribution to install
2.1.2 How to Get MySQL
2.1. 3 Verifying Package Integrity Using MD5 Checksums or GnuPG
.69
69
2.1. 4 Installation Layouts
82
2.1.5 Compiler-Specific Build Characteristics
82
2.2 Installing MySQL on UniX/Linux Using Generic Binaries
82
2.3 Installing MysQL on Microsoft Windows
85
2.3.1 MySQL Installation Layout on Microsoft Windows
2.3.2 Choosing an Installation Package
2.3. 3 My SQL Installer for Windows
90
2.3.4 MySQL Notifier
113
2.3.5 Installing MySQL on Microsoft Windows Using a noinstalI ZIP Archive
124
2.3.6 Troubleshooting a Microsoft Windows MySQL Server Installation
133
2.3.7 Windows postinstallation procedures
134
2. 4 Installing My SQL on macOS
136
2.4.1 General Notes on Installing MysQL on macOS
37
2.4.2 Installing MySQL on macOS Using Native Packages
138
2.4.3 Installing a mysQl Launch daemon
面面面11
142
2.4.4 Installing and Using the MySQL Preference Pane
145
2.5 Installing MysQL on Linux
2.5.1 Installing MySQL on Linux Using the MySQL Yum Repository
149
150
2.5.2 Replacing a Third-Party Distribution of My sQL Using the MysQL Yum
Reposito
154
2.5.3 Installing mysQL on Linux Using the MysQL APT Repository
.156
2.5. 4 Installing MysQL on Linux Using the MySQL SLES Repository
157
MySQL 5.7 Reference Manual
2.5.5 Installing MySQL on Linux Using RPM Packages from Oracle
157
2.5.6 Installing MySQL on Linux Using Debian Packages from Oracle
162
2.5.7 Deploying MySQL on Linux with Docker
163
2.5.8 Installing MySQL on Linux from the Native Software Repositories
.172
2.5.9 stalling MysQL on Linux with Juju……
175
2.5.10 Managing MySQL Server with systemd
自面面国面面面
176
2.6 Installing My SQL Using Unbreakable Linux Network (ULN)
181
2.7| stalling My SQL on Solaris......…...….……………181
2.7.1 Installing MySQL on Solaris Using a Solaris PKG...
182
2.8 Installing MySQL on FreeBSD
183
2.9 Installing MySQL from Source
184
2.9.1 My SQL Layout for Source Installation
186
2.9.2 stalling My SQL∪ sing a Standard Source Distribution…………
186
2.9.3 Installing My SQL Using a Development Source Tree
190
2.9.4 My SQL Source- Configuration Options……
192
2.9.5 Dealing with Problems Compiling MySQL
213
2.9.6 MySQL Configuration and third-Party tools
215
2.10 Postinstallation Setup and Testing
215
2.10.1 Initializing the Data Directory
216
2.10.2 Starting the server
221
2. 10.3 Testing the Server.......
224
2. 10.4 Securing the Initial My SQL Account
226
2. 10.5 Starting and Stopping My SQL Automatically
228
2.11 Upgrading MySQL
2.11.1 Before You begin
229
2.11.2 Upgrade Paths
230
2.11.3 Changes in MySQL 5.7
230
2.11.4 Upgrading My SQL Binary or Package-based Installations on Unix/Linux
239
2.11.5 Upgrading MySQL with the MysQL Yum Repository………
242
2.11.6 Upgrading MySQL with the MySQL APT Repository
243
2. 11.7 Upgrading MySQL with the MysQL SLES Repository
244
2. 11.8 Upgrading My SQL on Windows
2. 11.9 Upgrading a Docker Installation of MySQL
.245
2. 11.10 Upgrading MySQL with Directly-Downloaded RPM Packages
245
2.11.11 Upgrade Troubleshooting………,
247
2. 11.12 Rebuilding or Repairing Tables or Indexes
.247
2. 11.13 Copying MySQL Databases to Another Machine
249
2.12 Downgrading MysQl
2.12.1 Before You Begin..,.......
250
2.12.2 Downgrade paths
.251
2. 12.3 Downgrade Notes
251
2. 12. 4 Downgrading Binary and Package-based Installations on Unix/Linux...... 254
2. 12.5 Downgrade Troubleshooting
.256
2.13 Perl Installation notes
256
2.13. 1 Installing perl on Unix
257
2.13.2 Installing ActiveState Perl on Windows
2.13.3 Problems Using the Perl DBI/DBD Interface
258
258
3 Tutorial
261
3.1 Connecting to and Disconnecting from the Server
261
3.2 Entering Queries
262
3.3 Creating and using a database
..265
3.3.1 Creating and Selecting a Database
266
3.3.2 Creating a Table.....
3.3.3 Loading data into a table.........
268
3.3. 4 Retrieving Information from a table
270
3. 4 Getting Information About Databases and Tables
283
3.5 Using mysql in Batch Mode
284
3.6 EXamples of Common Queries
285
MySQL 5.7 Reference Manual
3.6.1 The maximum value for a column
286
3.6.2 The Row Holding the Maximum of a Certain Column.
286
3.6.3 Maximum of Column per Group
..287
3.6.4 The Rows Holding the Group-Wise Maximum of a Certain Column
87
3.6.5 Using User-Defined Variables
288
3.6.6 Using Foreign Keys. ...........................................................................,.............288
3.6.7 Searching on Two Keys
3.6.8 Calculating Visits Per Day
3.6. 9 Using AUTO INCREMENT
290
3.7 Using MySQL with Apache
293
4 MySQL Programs
4. 1 Overview of MysQL Programs
4.2 Using My SQL Programs...
300
4.2. 1 Invoking My SQL Programs
300
4.2.2 Connecting to the MySQL Server.....
301
4.2.3 Specifying Program Options
.305
4.2.4 Using Options on the Command Line
4.2.5 Program Option Modifiers
4.2.6 Using Option Files
308
4.2.7 Command-Line Options that Affect Option-File Handling
312
4.2.8 Using Options to Set Program Variables
314
4.2.9 Option Defaults, Options Expecting Values, and the=Sign…………,315
4.2. 10 Setting Environment Variables
318
4.3 MySQL Server and Server-Startup Programs
319
4.3.1 myscld -The MysQL Server
319
4.3.2 mysqid safe- MysQL Server Startup Script
320
4.3.3 mysql. server- MysQL Server Startup Script.....
326
4.3. 4 mysqld multi- Manage Multiple My SQL Servers
328
4. 4 MySQL Installation-Related Programs
332
4.4.1 comp er
Compile My SQL Error Message File
332
4.4.2 mysql ins=all db- Initialize My SQL Data Directory
333
4.4.3 mysqL plugin- Configure MysQL Server Plugins
4.4.4 mysql secure installaticn-Improve My SQL Installation Security .... 345
4.4.5 mysql ssl rsa setup -Create SSL/RSA Files
347
4.4.6 mysql tzinfo to sql-Load the Time Zone Tables......
∴350
4.4.7 mysql upgrade- Check and Upgrade MysQL Tables............ 351
4.5 MySQL Client Programs
4.5. 1 mysq-- The My sQL Command-Line Client
4.5.2 nysa ladImin -Client for Administering a My SQL Server
358
4.5.3 mysqicheck-A Table Maintenance Program
394
4.5. 4 mysq-durmp -A Database Backup Program
403
4.5.5 mysqlimport-A Data Import Program
425
4.5.6 mysa- A database backup program
432
4.5.7 mysqlshow--Display Database, Table, and Column Information
448
4.5.8 mysql
Load emulation client
454
4.6 MysQL Administrative and Utility Programs
463
4.6.1 innochecksum-Offline InnoDB File Checksum Utility
463
4.6.2 myisam ftaump-Display Full-Text Index information
469
4.6.3 myisamchk- Myl SAM Table-Maintenance Utility………
470
4.6. 4 myi samlog-Display Myl SAM Log File Contents
486
4.6.5 myisampack -Generate Compressed, Read-Only myIsam Tables
487
4.6.6 mysql config editor -- MySQL Configuration Utility
493
4.6.7 nysylbinloc- Utility for Processing Binary Log Files………
499
46.8mysq1 dumps1ow- Summarize Slow Query Log Files...………
519
4.7 My SQL Program Development Utilities
521
4.7.1 mysql config- Display Options for Compiling Clients
522
4.7.2 my print. defaults-Display Options from Option Files
523
4.7.3 resolve stack dump -Resolve Numeric Stack Trace Dump to Symbols
MySQL 5.7 Reference Manual
4.8 Miscellaneous Programs
525
4.8.1 1z4 decompress- Decompress mysqlpump LZ4-Compressed Output.... 525
4.8.2 perror- Display MysQL Error Message Information
525
4.8.3 replace -A String-Replacement Utility
526
4.8. 4 resolveip-Resolve Host name to IP Address or Vice Versa......
527
4.8.5 zlib decompress -Decompress mysqlpump ZLIB-Compressed Output... 528
4.9 MySQL Program Environment Variables
528
5 MySQL Server Administration……
531
5.1 The MySQL Server
532
5.1.1 Configuring the Server
532
5.1.2 Server Configuration Defaults
534
5.1.3 Server Option, System Variable, and status Variable Reference
534
5.1.4 Server System Variable Reference
576
5.1.5 Server Status Variable Reference
599
5.1.6 Server Command Options
613
5.1.7 Server System variables
650
5.1.8 Using System Variables
769
5.1.9 Server status variables
786
5.1.10 Server sQL Modes
5.1.11Pv6 Support.…
821
5. 1. 12 MySQL Server Time Zone Support
825
5.1.13 Server-Side Help Support
830
5.1. 14 Server tracking of client Session State Changes
830
5. 1.15 Server Response to Signals
83
5.1.16 The Server shutdown process
834
5.2 The My SQL Data Directory
836
5.3 The mysql System Database
..836
5. 4 My SQL Server Logs
..839
5.4.1 Selecting General Query Log and Slow Query Log Output Destinations
840
5.4.2 The error lot
842
54.3 The General Query Log……
.845
5.4.4 The Binary Log……
846
5.4.5 The Slow Query Log
858
5. 4.6 The DDL Log
860
5.4.7 Server Log Maintenance
860
5.5 MySQL Server Plugins
862
5.5.1 Installing and uninstalling plugins
863
5.5.2 Obtaining Server Plugin Information
867
5.5.3 MySQL Enterprise Thread pool
868
5.5. 4 The Rewriter Query Rewrite Plugin
874
5.55∨ ersion tokens
882
5.6 MySQL Server User-Defined Functions
893
5.6. 1 Installing and Uninstalling User-Defined Functions
894
5.6.2 Obtaining User-Defined Function Information
894
5.7 Running Multiple MysQL Instances on One Machine
895
5.7.1 Setting Up Multiple Data Directories
896
5.7.2 Running Multiple My SQL Instances on Windows
897
5.7.3 Running Multiple MysQL Instances on Unix
∴900
5.7.4 Using Client Programs in a Multiple-Server Environment
901
5.8 Tracing mysqld Using DTrace
902
5.8. 1 mysqld dtrace Probe Reference
903
6 Security…
6. 1 General security Issues
6. 1. 1 Security Guidelines
922
6.1.2 Keeping Passwords Secure
923
6.1.3 Making MySQL Secure Against Attackers .........
932
6.1.4 Security-Related mysqld Options and Variables
934
6. 1.5 How to Run MySQL as a Normal User
934
MySQL 5.7 Reference Manual
6.1.6 Security Issues with LOAD DATA LOCAL
935
6.1.7 Client Programming Security Guidelines
6.2 The MySQL Access Privilege system
937
6.2. 1 Privileges provided by mysQl
939
6.2.2 Grant tables
6.2.3 Specifying Account Names…….…
950
6.2. 4 Access Control, Stage 1: Connection Verification
952
625 Access Control, Stage2: Request Verification……………955
6.2.6 When Privilege Changes Take Effect
957
6.2.7 Troubleshooting Problems Connecting to MySQL
957
6. 3 My SQL User Account Management
962
6.3. 1 User Names and passwords
∴962
6.3.2 Adding User Accounts
964
6.3. 3 Removing User Accounts
.966
6.3.4 Reserved User Accounts
.966
6.3.5 Setting account resource Limits
∴966
6.3.6 Assigning Account Passwords
968
6.3.7 Password Management
969
6.3.8 Password Expiration and Sandbox Mode
971
6.3.9 Pluggable Authentication
973
6.3. 10 Proxy Users..
975
6.3.11 User Account Locking……
981
6.3. 12 SQL-Based MySQL Account Activity Auditing
982
6.4 Using Encrypted Connections
983
6.4.1 Configuring MysQL to Use Encrypted Connections
985
6.4.2 Command Options for Encrypted Connections
6.4.3 Creating SSL and RSA Certificates and Keys
993
6.4.4 SSL Library-Dependent Capabilities
1002
6.4.5 Building MySQL with Support for Encrypted Connections
1003
6.4.6 Encrypted Connection Protocols and Ciphers
1004
6. 4.7 Connecting to MySQL Remotely from Windows with SSH
1007
6.5 Security Plugins∴.…
1007
6.5.1 Authentication Plugins
.1008
6.5.2 The Connection-Control Plugins
1071
6.53 The Password validation Plugin……
1076
6.5.4 The My SQL Keyring
1083
6.5.5 MySQL Enterprise Audit
1115
6.5.6 My SQL Enterprise Firewall
1177
6.5.7 My SQL Enterprise Data Masking and De-ldentification
1189
7 Backup and Recovery ..
1207
7.1 Backup and Recovery Types
1208
7.2 Database Backup Method
1211
7.3 Example Backup and Recovery Strategy
1213
7.3.1 Establishing a Backup Policy
1213
7.3.2 Using Backups for Recovery
1215
7.3.3 Backup Strategy Summary
1216
7.4 Using mysqldump for Backups
1216
7.4.1 Dumping Data in SQL Format with mysqldump
1216
7.4.2 Reloading SQL-Format Backups
1217
7.4.3 Dumping Data in Delimited-Text Format with mysqldump
1218
7. 4.4 Reloading Delimited-Text Format Backups
1219
7.4.5 mysqldump Tips
1220
7.5 Point-in-Time(Incremental) Recovery Using the Binary Log
1222
7.5.1 Point-in-Time Recovery Using Event Times
1223
7.5.2 Point-in-Time Recovery Using Event Positions
1224
76 Myl SAM Table Maintenance and Crash Recovery………
1225
7.6. 1 Using myisamchk for Crash Recovery
7.6.2 How to Check Myl SAM Tables for Errors
1226
MySQL 5.7 Reference Manual
7.6.3 How to Repair Myl SAM Tables
1226
7.6. 4 MyISAM Table Optimization
1229
7.6.5 Setting Up a Myl SAM Table Maintenance Schedule
1229
8 Optimization
1231
8. 1 Optimization Overview
1232
8.2 Optimizing sql statements
1234
8.2.1 Optimizing SELECT Statements
1234
8. 2.2 Optimizing Subqueries, Derived Tables, and view References .......... 1276
8.2.3 Optimizing INFORMATION SCHEMA Queries
..s4
1287
8.2. 4 Optimizing Data Change Statements
1292
8.2.5 Optimizing Database Privileges
1293
8.2.6 Other Optimization Tips
1293
8.3 Optimization and Indexes
1294
831 How MySQL Uses Indexes∴…
1294
8.3.2 Primary Key Optimization
1295
8.3. 3 Foreign Key Optimization
1295
8. 3. 4 Column Indexes
1295
8.3.5 Multiple-Column Indexes
1297
8.3.6 Verifying Index Usage……
1298
8.3.7 Innodb and myisaM Index statistics Collection
…………1298
8.3.8 Comparison of B-Tree and Hash Indexes
1300
8.3 9 Use of Index extensio
1301
8.3.10 Optimizer Use of generated column Indexes
1304
8.4 Optimizing Database Structure
1305
8. 4.1 Optimizing Data Size
1305
8.4.2 Optimizing My SQL Data Types
1307
8.4.3 Optimizing for Many tables
1309
8. 4. 4 Internal Temporary table Use in My SQL
1310
8.5 Optimizing for InnoDB Tables....
1312
8.5. 1 Optimizing Storage Layout for InnoDB Tables
1312
8.5.2 Optimizing Innodb transaction management
1313
8.5.3 Optimizing InnoDB Read-Only Transactions
∴1314
8.5. 4 Optimizing InnodB Redo logging
1315
8.5.5 Bulk Data Loading for InnoDB Tables
1316
8.5.6 Optimizing InnoDB Queries
1317
8.5.7 Optimizing InnoDB DDL Operations
1317
8.5.8 Optimizing InnoDB Disk 1/O
1318
8.5.9 Optimizing InnoDB Configuration variables
1320
8.5.10 Optimizing InnoDB for Systems with Many Tables
1322
8.6 Optimizing for MyISAM Tables
1322
8.6. 1 Optimizing MylSAM Queries
1322
8.6.2 Bulk Data Loading for MyISAM Tables
1323
8.6. 3 Optimizing repair table statements
1325
8.7 Optimizing for MEMORY Tables
8.8 Understanding the Query Execution Plan
1326
1326
8.8.1 Optimizing Queries with EXPLAIN
1326
8.8.2 EXPLAIN Output Format
.1327
8.8.3 Extended EXPLAIN Output Format
.1340
8.8.4 Obtaining Execution Plan Information for a Named Connection
1342
8.8.5 Estimating Query Performance
1343
8.9 Controlling the Query Optimizer
1343
8.9.1 Controlling Query Plan Evaluation……
1343
8.9.2 ptimizer Hints….…,
1344
8.9.3 Switchable Optimizations....
1350
89.4 Index Hints
1354
8.9.5 The Optimizer cost Model
1356
8.10 Buffering and Caching
1360
8. 10. 1 InnoDB Buffer Pool Optimization
1360
MySQL 5.7 Reference Manual
8.10.2 The MyIsAM Key Cache
1360
8.10.3 The MySQL Query Cache
1364
8. 10.4 Caching of Prepared Statements and Stored Programs
1371
8.11 Optimizing Locking Operations
.1373
8.11.1 Internal Locking Methods
1373
8.11.2 Table Locking Issues
1375
8.11. 3 Concurrent Inserts
1377
8. 11.4 Metadata Locking
1377
8.11.5 External Locking
1380
8. 12 Optimizing the My sQL Server
1381
8. 12.1 System Factors
1382
8.12.2 Optimizing disk∥O……,
1382
8.12.3 Using symbolic Links
1383
8. 12. 4 Optimizing Memory Use
1386
8. 12.5 Optimizing Network
1392
8. 13 Measuring Performance( Benchmarking
.1395
8.13.1 Measuring the speed of EXpressions and Functions
1396
8.13.2 Using your Own Benchmarks
1396
8.13.3 Measuring Performance with performance schema
1397
8. 14 Examining Thread Information
1397
8. 14.1 Thread command values
1398
8. 142 General thread states
1400
8.14.3 Query Cache Thread states
1406
8. 14.4 Replication Master Thread States
1406
8. 14.5 Replication Slave l/o Thread states
1407
8. 14.6 Replication Slave sQl Thread states
1408
8. 14.7 Replication Slave Connection Thread States
1409
8. 14.8 NDB Cluster Thread states
1409
8. 14.9 Event scheduler thread states
1410
9 Language structure
1411
9.1 Literal values
1411
9.1.1 String Literals
1411
9.1.2 Numeric Literals
1414
9.1. 3 Date and Time literals
1414
9.1.4 Hexadecimal Literals
1416
9.1.5Bit∨ alue literals∴
1418
9.1. 6 Boolean literals
..1420
9.1.7 NULL Values
1420
9. 2 Schema Object Names
1420
9.2.1 Identifier qualifiers
1422
9.2.2 Identifier Case Sensitivity
1424
9.2. 3 Mapping of Identifiers to File Names..............................1426
9.2. 4 Function Name Parsing and resolution
1429
9. 3 Keywords and reserved Words
1432
9.4 User-Defined variables
1454
9.5 Expressions
1458
9. 6 Comment Syntax
1462
10 Character Sets, Collations. Unicode
画
1465
10.1 Character sets and collations in general
1466
10.2 Character sets and collations in MySQL
1467
10.2.1 Character set Repertoire
1468
10.22 UTF-8 for metadata
1470
10.3 Specifying Character Sets and Collations
1471
10.3.1 Collation Naming Conventions
1472
10.3.2 Server Character Set and Collation
1473
10.3. 3 Database character set and collation
1473
10.3.4 Table Character set and collation
1474
10.3.5 Column Character set and collation
1475
IX
MySQL 5.7 Reference Manual
10.3.6 Character String Literal character Set and Collation
1476
10.3.7 The National character set
∴1478
10.3.8 Character set Introducers
1479
10.3.9 Examples of Character Set and Collation Assignment
1480
10.3. 10 Compatibility with other DBMss
1481
10.4 Connection character sets and collations
IIb1 I
1481
10.5 Configuring Application Character Set and Collation
1488
10.6 Error Message Character set
1489
10.7 Column Character Set Conversion
1490
10.8 Collation issues
1492
10.8.1 Using COLLATE in SQL Statements
1492
10.8.2 COLLATE Clause Precedence
.1492
10.8.3 Character Set and collation Compatibility
1493
0. 8. 4 Collation Coercibility in Expressions
1493
10.8.5 The binary Collation Compared to bin Collations .....
1494
10.8.6 Examples of the Effect of Collation
1496
10.8.7 Using Collation in INFORMATION SCHEMA Searches
1497
10.9 Unicode Support
1499
10.9. 1 The utf8mb4 Character Set(4-Byte UTF-8 Unicode Encoding)......... 1501
10.9.2 The utf8mb3 Character Set (3-Byte UTF-8 Unicode Encoding)
.1501
10.9.3 The utf8 Character Set (Alias for utf8mb3)
1502
10.94 The ucs2 Character set(Ucs2 Unicode Encoding)…………………1502
10.9.5 The utf16 Character Set (UTF-16 Unicode Encoding)
1502
0.9.6 The utf16le Character Set(UTF-16LE Unicode Encoding)
1503
10. 9. 7 The utf32 Character Set (UTF-32 Unicode Encoding
1503
10.9.8 Converting Between 3-Byte and 4-Byte Unicode Character Sets
1504
10.10 Supported Character Sets and Collations
1506
10.10.1 Unicode character sets
1507
10.10.2 West European character sets
1512
10.10.3 Central European Character Sets
1513
10. 10.4 South european and middle east character Sets
1514
10.10.5 Baltic Character sets
1515
10.10.6 Cyrillic Character Sets
1515
10.10.7 Asian character sets
1515
10.10.8 The Binary Character Set
1520
10.11 Setting the Error Message Language..,…,……
1520
10. 12 Adding a Character Set
1521
10.12.1 Character Definition Arrays
1523
10. 12.2 String Collating Support for Complex Character Sets
1524
10. 12.3 Multi-Byte Character Support for Complex Character Sets
1524
10.13 Adding a Collation to a Character Set
1524
10. 13.1 Collation Implementation Types
.1525
10. 13.2 Choosing a Collation ID
1528
0. 13.3 Adding a Simple Collation to an 8-Bit Character Set
1529
10.13. 4 Adding a UCA Collation to a Unicode Character Set
1530
10.14 Character Set configuration
1537
10.15 MySQL Server Locale Support
1538
11 Data Types
ii0idddi
1541
11.1 Data Type Overview
1542
11.1.1 Numeric Type Overview
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11.1.2 Date and Time Type Overview
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1.1.3 String Type Overview
11.2 Numeric Types∴.….….….
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11.2. 1 Integer Types(Exact Value)-INTEGER, INT, SMALLINT, TINYINT
MEDIUMINT BIGINT
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11.2.2 Fixed-Point Types(Exact Value)-DECIMAL, NUMERIC
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11.2.3 Floating-Point Types(Approximate Value)-FLOAT, DOUBLE
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11.2.4 Bit-Value Type-BIT
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