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首页MySQL 5.7官方参考手册:功能与特性详解
"MySQL 5.7官方手册"
MySQL 5.7参考手册是针对MySQL数据库管理系统的一个详尽的文档,涵盖了从5.7版本到5.7.10的所有更新和特性。手册特别指出,MySQL Cluster在MySQL 5.7中未被支持,对于需要MySQL Cluster信息的用户,建议查阅MySQL Cluster NDB 7.3和7.4的相关文档。
在MySQL 5.7中,有一些特性并非所有版本都包含,这些特性可能取决于你所拥有的MySQL 5.7的特定发行版。如果你对你的发行版包含哪些特性有疑问,应查阅你的MySQL 5.7许可协议或联系你的Oracle销售代表。这强调了MySQL不同版本间的差异性和许可的重要性。
手册中包含了关于每个版本的更新和改进的详细注释,这些可以在MySQL 5.7发行说明中找到,这对于跟踪版本变化和了解新功能非常有帮助。
手册分为多个部分,适合不同的用户群体:
1. **通用**:这部分提供对MySQL 5.7的基本介绍和通用信息。
2. **管理员**:这部分内容是为数据库管理员设计的,包括服务器管理、安装与升级等。
3. **MySQL企业版**:这部分可能包含专属于MySQL企业版的特性和服务,如MySQL Enterprise Monitor和MySQL Workbench。
4. **开发者和功能**:面向开发人员,讨论各种数据库功能和编程接口。
5. **连接器和APIs**:这部分涵盖与MySQL交互的各种语言驱动程序和API,例如Connector/J。
6. **高可用性/可扩展性**:提供了有关如何实现数据库的高可用性和可扩展性的指导。
7. **教程**:为初学者提供了逐步指导,帮助快速上手MySQL。
8. **全球化**:讨论了MySQL在不同语言环境下的支持和设置。
9. **MySQL Yum Repository**:关于使用Yum包管理器安装和管理MySQL的指南。
10. **MySQL Fabric**:这是一个集群管理工具,用于实现数据分片和高可用性。
此外,手册还包含法律通知,确保用户在使用MySQL 5.7时遵循正确的法律条款和条件。
MySQL 5.7官方手册是一份全面的参考资料,无论你是数据库管理员、开发人员还是初学者,都可以从中获取必要的信息,以充分利用MySQL 5.7的各项功能。它提供了安装、配置、优化、备份、恢复、安全性和性能监控等方面的知识,是理解和操作MySQL 5.7不可或缺的工具。
MySQL 5.7 Reference Manual
xvi
14.12.1 InnoDB INFORMATION_SCHEMA Tables about Compression ...................... 2120
14.12.2 InnoDB INFORMATION_SCHEMA Transaction and Locking Tables ............... 2122
14.12.3 InnoDB INFORMATION_SCHEMA System Tables ....................................... 2128
14.12.4 InnoDB INFORMATION_SCHEMA FULLTEXT Index Tables ......................... 2133
14.12.5 InnoDB INFORMATION_SCHEMA Buffer Pool Tables .................................. 2136
14.12.6 InnoDB INFORMATION_SCHEMA Metrics Table ......................................... 2140
14.12.7 InnoDB INFORMATION_SCHEMA Temporary Table Information Table .......... 2148
14.12.8 Retrieving InnoDB Tablespace Metadata from
INFORMATION_SCHEMA.FILES ............................................................................ 2150
14.13 InnoDB Integration with MySQL Performance Schema ............................................ 2151
14.13.1 Monitoring ALTER TABLE Progress for InnoDB Tables Using Performance
Schema .................................................................................................................. 2153
14.13.2 Monitoring InnoDB Mutex Waits Using Performance Schema ........................ 2154
14.14 InnoDB Monitors ................................................................................................... 2158
14.14.1 InnoDB Monitor Types ................................................................................ 2158
14.14.2 Enabling InnoDB Monitors ........................................................................... 2159
14.14.3 InnoDB Standard Monitor and Lock Monitor Output ...................................... 2161
14.14.4 InnoDB Tablespace Monitor Output ............................................................. 2166
14.14.5 InnoDB Table Monitor Output ...................................................................... 2168
14.15 InnoDB Backup and Recovery ............................................................................... 2171
14.15.1 The InnoDB Recovery Process ................................................................... 2173
14.15.2 Tablespace Discovery During Crash Recovery ............................................. 2173
14.16 InnoDB and MySQL Replication ............................................................................. 2174
14.17 InnoDB Integration with memcached ...................................................................... 2176
14.17.1 Benefits of the InnoDB / memcached Combination ........................................ 2177
14.17.2 Architecture of InnoDB and memcached Integration ...................................... 2178
14.17.3 Getting Started with InnoDB Memcached Plugin ........................................... 2181
14.17.4 Security Considerations for the InnoDB memcached Plugin ........................... 2184
14.17.5 Writing Applications for the InnoDB memcached Interface ............................. 2185
14.17.6 Using the InnoDB memcached Plugin with Replication .................................. 2196
14.17.7 Internals of the InnoDB memcached Plugin .................................................. 2200
14.17.8 Troubleshooting the InnoDB memcached Plugin ........................................... 2205
14.18 InnoDB Troubleshooting ........................................................................................ 2207
14.18.1 Troubleshooting InnoDB I/O Problems ......................................................... 2207
14.18.2 Forcing InnoDB Recovery ........................................................................... 2208
14.18.3 Troubleshooting InnoDB Data Dictionary Operations ..................................... 2209
14.18.4 InnoDB Error Handling ................................................................................ 2212
14.18.5 InnoDB Error Codes ................................................................................... 2212
15 Alternative Storage Engines ............................................................................................... 2215
15.1 Setting the Storage Engine ...................................................................................... 2218
15.2 The MyISAM Storage Engine .................................................................................. 2219
15.2.1 MyISAM Startup Options .............................................................................. 2221
15.2.2 Space Needed for Keys ................................................................................ 2223
15.2.3 MyISAM Table Storage Formats ................................................................... 2223
15.2.4 MyISAM Table Problems .............................................................................. 2226
15.3 The MEMORY Storage Engine ................................................................................ 2227
15.4 The CSV Storage Engine ........................................................................................ 2231
15.4.1 Repairing and Checking CSV Tables ............................................................. 2232
15.4.2 CSV Limitations ........................................................................................... 2233
15.5 The ARCHIVE Storage Engine ................................................................................ 2233
15.6 The BLACKHOLE Storage Engine ........................................................................... 2234
15.7 The MERGE Storage Engine ................................................................................... 2236
15.7.1 MERGE Table Advantages and Disadvantages .............................................. 2239
15.7.2 MERGE Table Problems ............................................................................... 2239
15.8 The FEDERATED Storage Engine ........................................................................... 2241
15.8.1 FEDERATED Storage Engine Overview ........................................................ 2241
15.8.2 How to Create FEDERATED Tables .............................................................. 2242
15.8.3 FEDERATED Storage Engine Notes and Tips ................................................ 2245
MySQL 5.7 Reference Manual
xvii
15.8.4 FEDERATED Storage Engine Resources ...................................................... 2246
15.9 The EXAMPLE Storage Engine ............................................................................... 2247
15.10 Other Storage Engines .......................................................................................... 2247
15.11 Overview of MySQL Storage Engine Architecture .................................................... 2247
15.11.1 Pluggable Storage Engine Architecture ........................................................ 2248
15.11.2 The Common Database Server Layer .......................................................... 2248
16 High Availability and Scalability .......................................................................................... 2251
16.1 Oracle VM Template for MySQL Enterprise Edition ................................................... 2253
16.2 Overview of MySQL with DRBD/Pacemaker/Corosync/Oracle Linux ........................... 2254
16.3 Overview of MySQL with Windows Failover Clustering .............................................. 2256
16.4 Using MySQL within an Amazon EC2 Instance ......................................................... 2258
16.4.1 Setting Up MySQL on an EC2 AMI ............................................................... 2258
16.4.2 EC2 Instance Limitations .............................................................................. 2260
16.4.3 Deploying a MySQL Database Using EC2 ..................................................... 2260
16.5 Using ZFS Replication ............................................................................................. 2263
16.5.1 Using ZFS for File System Replication ........................................................... 2265
16.5.2 Configuring MySQL for ZFS Replication ......................................................... 2265
16.5.3 Handling MySQL Recovery with ZFS ............................................................. 2266
16.6 Using MySQL with memcached ............................................................................... 2266
16.6.1 Installing memcached ................................................................................... 2267
16.6.2 Using memcached ........................................................................................ 2269
16.6.3 Developing a memcached Application ............................................................ 2287
16.6.4 Getting memcached Statistics ....................................................................... 2312
16.6.5 memcached FAQ ......................................................................................... 2320
17 Replication ........................................................................................................................ 2325
17.1 Configuring Replication ............................................................................................ 2326
17.1.1 Binary Log Replication Configuration Overview .............................................. 2327
17.1.2 Setting Up Binary Log Based Replication ....................................................... 2327
17.1.3 Replication with Global Transaction Identifiers ................................................ 2336
17.1.4 MySQL Multi-Source Replication ................................................................... 2346
17.1.5 Changing Replication Modes on Online Servers ............................................. 2350
17.1.6 Replication and Binary Logging Options and Variables .................................... 2356
17.1.7 Common Replication Administration Tasks ..................................................... 2442
17.2 Replication Implementation ...................................................................................... 2445
17.2.1 Replication Formats ...................................................................................... 2445
17.2.2 Replication Implementation Details ................................................................ 2452
17.2.3 Replication Channels .................................................................................... 2454
17.2.4 Replication Relay and Status Logs ................................................................ 2457
17.2.5 How Servers Evaluate Replication Filtering Rules ........................................... 2463
17.3 Replication Solutions ............................................................................................... 2469
17.3.1 Using Replication for Backups ....................................................................... 2470
17.3.2 Using Replication with Different Master and Slave Storage Engines ................. 2473
17.3.3 Using Replication for Scale-Out ..................................................................... 2474
17.3.4 Replicating Different Databases to Different Slaves ........................................ 2475
17.3.5 Improving Replication Performance ............................................................... 2477
17.3.6 Switching Masters During Failover ................................................................. 2478
17.3.7 Setting Up Replication Using SSL ................................................................. 2480
17.3.8 Semisynchronous Replication ........................................................................ 2481
17.3.9 Delayed Replication ...................................................................................... 2486
17.4 Replication Notes and Tips ...................................................................................... 2487
17.4.1 Replication Features and Issues ................................................................... 2487
17.4.2 Replication Compatibility Between MySQL Versions ....................................... 2515
17.4.3 Upgrading a Replication Setup ...................................................................... 2516
17.4.4 Troubleshooting Replication .......................................................................... 2517
17.4.5 How to Report Replication Bugs or Problems ................................................. 2518
18 Partitioning ........................................................................................................................ 2521
18.1 Overview of Partitioning in MySQL ........................................................................... 2523
18.2 Partitioning Types ................................................................................................... 2525
MySQL 5.7 Reference Manual
xviii
18.2.1 RANGE Partitioning ...................................................................................... 2527
18.2.2 LIST Partitioning ........................................................................................... 2531
18.2.3 COLUMNS Partitioning ................................................................................. 2534
18.2.4 HASH Partitioning ........................................................................................ 2541
18.2.5 KEY Partitioning ........................................................................................... 2544
18.2.6 Subpartitioning ............................................................................................. 2546
18.2.7 How MySQL Partitioning Handles NULL ........................................................ 2549
18.3 Partition Management ............................................................................................. 2553
18.3.1 Management of RANGE and LIST Partitions .................................................. 2554
18.3.2 Management of HASH and KEY Partitions ..................................................... 2560
18.3.3 Exchanging Partitions and Subpartitions with Tables ....................................... 2561
18.3.4 Maintenance of Partitions ............................................................................. 2568
18.3.5 Obtaining Information About Partitions ........................................................... 2570
18.4 Partition Pruning ..................................................................................................... 2572
18.5 Partition Selection ................................................................................................... 2575
18.6 Restrictions and Limitations on Partitioning ............................................................... 2581
18.6.1 Partitioning Keys, Primary Keys, and Unique Keys ......................................... 2587
18.6.2 Partitioning Limitations Relating to Storage Engines ....................................... 2590
18.6.3 Partitioning Limitations Relating to Functions ................................................. 2591
18.6.4 Partitioning and Locking ............................................................................... 2592
19 Stored Programs and Views ............................................................................................... 2595
19.1 Defining Stored Programs ....................................................................................... 2596
19.2 Using Stored Routines (Procedures and Functions) ................................................... 2597
19.2.1 Stored Routine Syntax .................................................................................. 2597
19.2.2 Stored Routines and MySQL Privileges ......................................................... 2598
19.2.3 Stored Routine Metadata .............................................................................. 2599
19.2.4 Stored Procedures, Functions, Triggers, and LAST_INSERT_ID() .................... 2599
19.3 Using Triggers ........................................................................................................ 2599
19.3.1 Trigger Syntax and Examples ....................................................................... 2600
19.3.2 Trigger Metadata .......................................................................................... 2603
19.4 Using the Event Scheduler ...................................................................................... 2604
19.4.1 Event Scheduler Overview ............................................................................ 2604
19.4.2 Event Scheduler Configuration ...................................................................... 2605
19.4.3 Event Syntax ............................................................................................... 2607
19.4.4 Event Metadata ............................................................................................ 2607
19.4.5 Event Scheduler Status ................................................................................ 2608
19.4.6 The Event Scheduler and MySQL Privileges .................................................. 2609
19.5 Using Views ........................................................................................................... 2611
19.5.1 View Syntax ................................................................................................. 2612
19.5.2 View Processing Algorithms .......................................................................... 2612
19.5.3 Updatable and Insertable Views .................................................................... 2614
19.5.4 The View WITH CHECK OPTION Clause ...................................................... 2616
19.5.5 View Metadata ............................................................................................. 2617
19.6 Access Control for Stored Programs and Views ........................................................ 2617
19.7 Binary Logging of Stored Programs ......................................................................... 2619
20 INFORMATION_SCHEMA Tables ....................................................................................... 2625
20.1 The INFORMATION_SCHEMA CHARACTER_SETS Table ....................................... 2628
20.2 The INFORMATION_SCHEMA COLLATIONS Table ................................................. 2628
20.3 The INFORMATION_SCHEMA COLLATION_CHARACTER_SET_APPLICABILITY
Table ............................................................................................................................. 2629
20.4 The INFORMATION_SCHEMA COLUMNS Table ..................................................... 2629
20.5 The INFORMATION_SCHEMA COLUMN_PRIVILEGES Table .................................. 2630
20.6 The INFORMATION_SCHEMA ENGINES Table ....................................................... 2631
20.7 The INFORMATION_SCHEMA EVENTS Table ........................................................ 2631
20.8 The INFORMATION_SCHEMA FILES Table ............................................................ 2635
20.9 The INFORMATION_SCHEMA GLOBAL_STATUS and SESSION_STATUS Tables .... 2637
20.10 The INFORMATION_SCHEMA GLOBAL_VARIABLES and SESSION_VARIABLES
Tables ............................................................................................................................ 2638
MySQL 5.7 Reference Manual
xix
20.11 The INFORMATION_SCHEMA KEY_COLUMN_USAGE Table ................................ 2638
20.12 The INFORMATION_SCHEMA OPTIMIZER_TRACE Table ..................................... 2639
20.13 The INFORMATION_SCHEMA PARAMETERS Table ............................................. 2639
20.14 The INFORMATION_SCHEMA PARTITIONS Table ................................................ 2640
20.15 The INFORMATION_SCHEMA PLUGINS Table ..................................................... 2643
20.16 The INFORMATION_SCHEMA PROCESSLIST Table ............................................. 2644
20.17 The INFORMATION_SCHEMA PROFILING Table .................................................. 2645
20.18 The INFORMATION_SCHEMA REFERENTIAL_CONSTRAINTS Table .................... 2646
20.19 The INFORMATION_SCHEMA ROUTINES Table ................................................... 2647
20.20 The INFORMATION_SCHEMA SCHEMATA Table .................................................. 2648
20.21 The INFORMATION_SCHEMA SCHEMA_PRIVILEGES Table ................................. 2648
20.22 The INFORMATION_SCHEMA STATISTICS Table ................................................. 2649
20.23 The INFORMATION_SCHEMA TABLES Table ....................................................... 2649
20.24 The INFORMATION_SCHEMA TABLESPACES Table ............................................ 2651
20.25 The INFORMATION_SCHEMA TABLE_CONSTRAINTS Table ................................ 2651
20.26 The INFORMATION_SCHEMA TABLE_PRIVILEGES Table .................................... 2652
20.27 The INFORMATION_SCHEMA TRIGGERS Table ................................................... 2652
20.28 The INFORMATION_SCHEMA USER_PRIVILEGES Table ..................................... 2654
20.29 The INFORMATION_SCHEMA VIEWS Table ......................................................... 2654
20.30 INFORMATION_SCHEMA Tables for InnoDB ......................................................... 2656
20.30.1 The INFORMATION_SCHEMA INNODB_CMP and INNODB_CMP_RESET
Tables .................................................................................................................... 2656
20.30.2 The INFORMATION_SCHEMA INNODB_CMP_PER_INDEX and
INNODB_CMP_PER_INDEX_RESET Tables ........................................................... 2657
20.30.3 The INFORMATION_SCHEMA INNODB_CMPMEM and
INNODB_CMPMEM_RESET Tables ........................................................................ 2658
20.30.4 The INFORMATION_SCHEMA INNODB_TRX Table .................................... 2660
20.30.5 The INFORMATION_SCHEMA INNODB_LOCKS Table ................................ 2662
20.30.6 The INFORMATION_SCHEMA INNODB_LOCK_WAITS Table ...................... 2663
20.30.7 The INFORMATION_SCHEMA INNODB_SYS_TABLES Table ...................... 2664
20.30.8 The INFORMATION_SCHEMA INNODB_SYS_INDEXES Table .................... 2666
20.30.9 The INFORMATION_SCHEMA INNODB_SYS_COLUMNS Table .................. 2667
20.30.10 The INFORMATION_SCHEMA INNODB_SYS_FIELDS Table ..................... 2669
20.30.11 The INFORMATION_SCHEMA INNODB_SYS_FOREIGN Table .................. 2669
20.30.12 The INFORMATION_SCHEMA INNODB_SYS_FOREIGN_COLS Table ....... 2670
20.30.13 The INFORMATION_SCHEMA INNODB_SYS_TABLESTATS View ............. 2670
20.30.14 The INFORMATION_SCHEMA INNODB_SYS_DATAFILES Table ............... 2671
20.30.15 The INFORMATION_SCHEMA INNODB_SYS_TABLESPACES Table ......... 2672
20.30.16 The INFORMATION_SCHEMA INNODB_SYS_VIRTUAL Table ................... 2676
20.30.17 The INFORMATION_SCHEMA INNODB_BUFFER_PAGE Table ................. 2677
20.30.18 The INFORMATION_SCHEMA INNODB_BUFFER_PAGE_LRU Table ......... 2679
20.30.19 The INFORMATION_SCHEMA INNODB_BUFFER_POOL_STATS Table ..... 2681
20.30.20 The INFORMATION_SCHEMA INNODB_METRICS Table .......................... 2683
20.30.21 The INFORMATION_SCHEMA INNODB_FT_CONFIG Table ...................... 2684
20.30.22 The INFORMATION_SCHEMA INNODB_FT_DEFAULT_STOPWORD Table
............................................................................................................................... 2685
20.30.23 The INFORMATION_SCHEMA INNODB_FT_INDEX_TABLE Table ............. 2686
20.30.24 The INFORMATION_SCHEMA INNODB_FT_INDEX_CACHE Table ............ 2688
20.30.25 The INFORMATION_SCHEMA INNODB_FT_DELETED Table .................... 2689
20.30.26 The INFORMATION_SCHEMA INNODB_FT_BEING_DELETED Table ........ 2690
20.30.27 The INFORMATION_SCHEMA INNODB_TEMP_TABLE_INFO Table .......... 2691
20.31 Extensions to SHOW Statements ........................................................................... 2692
21 MySQL Performance Schema ............................................................................................ 2695
21.1 Performance Schema Quick Start ............................................................................ 2697
21.2 Performance Schema Configuration ......................................................................... 2703
21.2.1 Performance Schema Build Configuration ...................................................... 2703
21.2.2 Performance Schema Startup Configuration ................................................... 2704
21.2.3 Performance Schema Runtime Configuration ................................................. 2706
MySQL 5.7 Reference Manual
xx
21.3 Performance Schema Queries ................................................................................. 2726
21.4 Performance Schema Instrument Naming Conventions ............................................. 2726
21.5 Performance Schema Status Monitoring ................................................................... 2729
21.6 Performance Schema Atom and Molecule Events ..................................................... 2733
21.7 Performance Schema Statement Digests .................................................................. 2733
21.8 Performance Schema General Table Characteristics ................................................. 2736
21.9 Performance Schema Table Descriptions ................................................................. 2736
21.9.1 Performance Schema Table Index ................................................................. 2736
21.9.2 Performance Schema Setup Tables .............................................................. 2739
21.9.3 Performance Schema Instance Tables ........................................................... 2744
21.9.4 Performance Schema Wait Event Tables ....................................................... 2748
21.9.5 Performance Schema Stage Event Tables ..................................................... 2753
21.9.6 Performance Schema Statement Event Tables ............................................... 2757
21.9.7 Performance Schema Transaction Tables ...................................................... 2767
21.9.8 Performance Schema Connection Tables ...................................................... 2773
21.9.9 Performance Schema Connection Attribute Tables ......................................... 2776
21.9.10 Performance Schema Replication Tables ..................................................... 2778
21.9.11 Performance Schema Lock Tables .............................................................. 2788
21.9.12 Performance Schema System Variable Tables ............................................. 2791
21.9.13 Performance Schema Status Variable Tables ............................................... 2792
21.9.14 Performance Schema Summary Tables ....................................................... 2793
21.9.15 Performance Schema Miscellaneous Tables ................................................ 2813
21.10 Performance Schema Option and Variable Reference ............................................. 2820
21.11 Performance Schema Command Options ............................................................... 2823
21.12 Performance Schema System Variables ................................................................. 2825
21.13 Performance Schema Status Variables ................................................................... 2840
21.14 The Performance Schema Memory-Allocation Model ............................................... 2843
21.15 Performance Schema and Plugins ......................................................................... 2844
21.16 Using the Performance Schema to Diagnose Problems ........................................... 2844
21.16.1 Query Profiling Using Performance Schema ................................................. 2846
21.17 Migrating to Performance Schema System and Status Variable Tables ..................... 2847
22 MySQL sys Schema .......................................................................................................... 2851
22.1 Prerequisites for Using the sys Schema ................................................................... 2851
22.2 Using the sys Schema ............................................................................................ 2852
22.3 sys Schema Object Reference ................................................................................. 2853
22.3.1 sys Schema Object Index ............................................................................. 2853
22.3.2 sys Schema Tables and Triggers .................................................................. 2858
22.3.3 sys Schema Views ....................................................................................... 2861
22.3.4 sys Schema Stored Procedures .................................................................... 2900
22.3.5 sys Schema Stored Functions ....................................................................... 2919
23 Connectors and APIs ......................................................................................................... 2931
23.1 MySQL Connector/ODBC ........................................................................................ 2934
23.2 MySQL Connector/Net ............................................................................................ 2935
23.3 MySQL Connector/J ................................................................................................ 2935
23.4 MySQL Connector/C++ ........................................................................................... 2935
23.5 MySQL Connector/C ............................................................................................... 2935
23.6 MySQL Connector/Python ....................................................................................... 2935
23.7 libmysqld, the Embedded MySQL Server Library ...................................................... 2935
23.7.1 Compiling Programs with libmysqld ............................................................... 2936
23.7.2 Restrictions When Using the Embedded MySQL Server .................................. 2936
23.7.3 Options with the Embedded Server ............................................................... 2937
23.7.4 Embedded Server Examples ......................................................................... 2937
23.8 MySQL C API ......................................................................................................... 2941
23.8.1 MySQL C API Implementations ..................................................................... 2941
23.8.2 Simultaneous MySQL Server and Connector/C Installations ............................ 2942
23.8.3 Example C API Client Programs ................................................................... 2943
23.8.4 Building and Running C API Client Programs ................................................. 2943
23.8.5 C API Data Structures .................................................................................. 2949
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