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# sys数据库
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+ ## sys Schema Configuration
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+
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+ ## Formatting Functions
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+
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+ ## The Views
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+
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+ ## Helper Functions and Procedures
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+ ## Summary
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# information数据库
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+ ## What Is the Information Schema?
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+ ## Privileges
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+ ## Views
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+
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+ ### System Information
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+ ### Schema Information
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+ ### Performance Information
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+ ### Privilege Information
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+ ## Caching of Index Statistics Data
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+
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+ ## Summary
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# show语句
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+ ## Relationship to the Information Schema
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+ ## Relationship to the Performance Schema
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+
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+ ## Engine Status
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+
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+ ## Replication and Binary Logs
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+ ### Listing Binary Logs
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+ ### Viewing Log Events
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+ ### Show Connected Replicas
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+ ## Miscellaneous Statements
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+
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+ ## Summary
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# 慢查询日志
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+ ## Configuration
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+ ## Log Events
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+ ## Aggregation
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+
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+ ## Summary
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# MySQL企业监控器
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+ ## Overview
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+ ## Installation
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+
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+ ### Download
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+
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+ ### Installation Process
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+ ## Starting and Stopping the Service Manager
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+
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+ ### Microsoft Windows
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+ ### Linux
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+ ## Adding MySQL Instances
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+
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+ ## The Graphical User Interface
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+
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+ ### General Navigation
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+
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+ ### Advisors
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+
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+ ### Timeseries Graphs
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+ ### The Query Analyzer
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+ ## Summary
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# MySQL Workbench
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+ ## Installation
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+ ### Microsoft Windows
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+ ### Enterprise Linux 7
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+
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+ ### Debian and Ubuntu
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+ ## Creating Connections
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+ ## Using MySQL Workbench
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+ ### Overview
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+
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+ ### Configuration
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+
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+ ### Safe Settings
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+
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+ ### Reformatting Queries
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+ ## EER Diagrams
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+ ## Summary
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# MySQL Shell
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+ ## Overview
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+
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+ ### Installing MySQL Shell
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+
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+ ### Invoking MySQL Shell
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+
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+ ### Creating Connections
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+ ### Language Modes
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+ ### Built-in Help
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+ ### Built-in Global Objects
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+ ## The Prompt
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+ ### Built-in Prompts
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+ ### Custom Prompt Definition
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+ ### Powerline and Awesome Fonts
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+ ## Using External Modules
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+ ## Reporting Infrastructure
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+ ### Report Information and Help
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+ ### Executing Reports
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+ ### Adding Your Own Reports
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+ ## Plugins
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+ ## Summary
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# 数据类型
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+ ## Why Data Types?
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+ ### Data Validation
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+ ### Documentation
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+ ### Optimized Storage
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+ ### Performance
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+ ### Correct Sorting
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+ ## MySQL Data Types
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+ ### Numeric Data Types
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+ ### Temporal Data Types
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+ ### String and Binary Data Types
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+
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+ ### JSON Data Type
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+ ### Spatial Data Types
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+ ### Hybrid Data Types
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+
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+ ## Performance
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+ ## Which Data Type Should You Choose?
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+ ## Summary
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# 索引
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+ ## What Is an Index?
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+ ## Index Concepts
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+ ### Key Versus Index
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+ ### Unique Index
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+ ### Primary Key
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+ ### Secondary Indexes
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+ ### Clustered Index
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+ ### Covering Index
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+ ## Index Limitations
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+ ## SQL Syntax
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+
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+ ### Creating Tables with Indexes
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+ ### Adding Indexes
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+ ### Removing Indexes
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+ ## What Are the Drawbacks of Indexes?
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+ ### Storage
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+ ### Updating the Index
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+ ### The Optimizer
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+ ## Index Types
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+ ### B-Tree Indexes
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+ ### Full Text Indexes
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+ ### Spatial Indexes (R-Tree)
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+ ### Multi-valued Indexes
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+ ### Hash Indexes
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+ ## Index Features
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+ ### Functional Indexes
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+ ### Prefix Indexes
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+ ### Invisible Indexes
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+ ### Descending Indexes
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+ ### Partitioning and Indexes
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+ ### Auto-generated Indexes
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+ ## InnoDB and Indexes
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+ ### The Clustered Index
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+ ### Secondary Indexes
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+ ### Recommendations
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+ ### Optimal Use Cases
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+ ## Index Strategies
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+ ### When Should You Add or Remove Indexes?
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+ ### Choice of the Primary Key
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+ ### Adding Secondary Indexes
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+ ### Multicolumn Index
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+ ### Covering Indexes
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+ ## Summary
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- # 索引统计
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+ # 索引统计
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+ ## What Are Index Statistics?
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+ ## InnoDB and Index Statistics
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+ ### How Statistics Are Collected
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+ ### Sample Pages
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+ ### Transaction Isolation Level
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+ ### Configuring Statistics Type
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+ ## Persistent Index Statistics
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+ ### Configuration
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+ ### Index Statistics Tables
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+ ## Transient Index Statistics
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+ ## Monitoring
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+ ### Information Schema STATISTICS View
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+ ### The SHOW INDEX Statement
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+ ### The Information Schema INNODB_TABLESTATS View
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+ ### The Information Schema TABLES View and SHOW TABLE STATUS
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+ ## Updating the Statistics
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+ ### Automatic Updates
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+ ### The ANALYZE TABLE Statement
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+ ### The mysqlcheck Program
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+ ## Summary
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