INFORMATION_SCHEMA 简介 INFORMATION_SCHEMA.CHARACTER_SETS INFORMATION_SCHEMA.COLLATIONS INFORMATION_SCHEMA.COLLATION_CHARACTER_SET_APPLICABILITYINFORMATION_SCHEMA.COLUMNS INFORMATION_SCHEMA.COLUMN_PRIVILEGES INFORMATION_SCHEMA.ENGINES INFORMATION_SCHEMA.EVENTS INFORMATION_SCHEMA.FILES INFORMATION_SCHEMA.GLOBAL_STATUS 与 SESSION_STATUS INFORMATION_SCHEMA.GLOBAL_VARIABLES 与 SESSION_VARIABLES INFORMATION_SCHEMA.KEY_COLUMN_USAGE INFORMATION_SCHEMA.OPTIMIZER_TRACE INFORMATION_SCHEMA.PARAMETERS INFORMATION_SCHEMA.PARTITIONS INFORMATION_SCHEMA.PLUGINS INFORMATION_SCHEMA.PROCESSLIST INFORMATION_SCHEMA.PROFILING INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS INFORMATION_SCHEMA.ROUTINES INFORMATION_SCHEMA.SCHEMATA INFORMATION_SCHEMA.SCHEMA_PRIVILEGES INFORMATION_SCHEMA.STATISTICS INFORMATION_SCHEMA.TABLES INFORMATION_SCHEMA.TABLESPACES INFORMATION_SCHEMA.TABLE_CONSTRAINTS INFORMATION_SCHEMA.TABLE_PRIVILEGES INFORMATION_SCHEMA.TRIGGERS INFORMATION_SCHEMA.USER_PRIVILEGES INFORMATION_SCHEMA.VIEWS
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