MySQL :: MySQL 8.4 Reference Manual :: 28.3.1 INFORMATION

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28.3.1 INFORMATION_SCHEMA 常规表参考

The following table summarizes INFORMATION_SCHEMA general tables. For greater detail, see the individual table descriptions.

Table 28.2 INFORMATION_SCHEMA General Tables

Table Name	Description
`ADMINISTRABLE_ROLE_AUTHORIZATIONS`	Grantable users or roles for current user or role
`APPLICABLE_ROLES`	Applicable roles for current user
`CHARACTER_SETS`	Available character sets
`CHECK_CONSTRAINTS`	Table and column CHECK constraints
`COLLATION_CHARACTER_SET_APPLICABILITY`	Character set applicable to each collation
`COLLATIONS`	Collations for each character set
`COLUMN_PRIVILEGES`	Privileges defined on columns
`COLUMN_STATISTICS`	Histogram statistics for column values
`COLUMNS`	Columns in each table
`COLUMNS_EXTENSIONS`	Column attributes for primary and secondary storage engines
`ENABLED_ROLES`	Roles enabled within current session
`ENGINES`	Storage engine properties
`EVENTS`	Event Manager events
`FILES`	Files that store tablespace data
`KEY_COLUMN_USAGE`	Which key columns have constraints
`KEYWORDS`	MySQL keywords
`ndb_transid_mysql_connection_map`	NDB transaction information
`OPTIMIZER_TRACE`	Information produced by optimizer trace activity
`PARAMETERS`	Stored routine parameters and stored function return values
`PARTITIONS`	Table partition information
`PLUGINS`	Plugin information
`PROCESSLIST`	Information about currently executing threads
`PROFILING`	Statement profiling information
`REFERENTIAL_CONSTRAINTS`	Foreign key information
`RESOURCE_GROUPS`	Resource group information
`ROLE_COLUMN_GRANTS`	Column privileges for roles available to or granted by currently enabled roles
`ROLE_ROUTINE_GRANTS`	Routine privileges for roles available to or granted by currently enabled roles
`ROLE_TABLE_GRANTS`	Table privileges for roles available to or granted by currently enabled roles
`ROUTINES`	Stored routine information
`SCHEMA_PRIVILEGES`	Privileges defined on schemas
`SCHEMATA`	Schema information
`SCHEMATA_EXTENSIONS`	Schema options
`ST_GEOMETRY_COLUMNS`	Columns in each table that store spatial data
`ST_SPATIAL_REFERENCE_SYSTEMS`	Available spatial reference systems
`ST_UNITS_OF_MEASURE`	Acceptable units for ST_Distance()
`STATISTICS`	Table index statistics
`TABLE_CONSTRAINTS`	Which tables have constraints
`TABLE_CONSTRAINTS_EXTENSIONS`	Table constraint attributes for primary and secondary storage engines
`TABLE_PRIVILEGES`	Privileges defined on tables
`TABLES`	Table information
`TABLES_EXTENSIONS`	Table attributes for primary and secondary storage engines
`TABLESPACES_EXTENSIONS`	Tablespace attributes for primary storage engines
`TRIGGERS`	Trigger information
`USER_ATTRIBUTES`	User comments and attributes
`USER_PRIVILEGES`	Privileges defined globally per user
`VIEW_ROUTINE_USAGE`	Stored functions used in views
`VIEW_TABLE_USAGE`	Tables and views used in views
`VIEWS`	View information

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