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https://dev.mysql.com/doc/refman/8.0/en/performance-schema-clone-tables.html
If the clone plugin is loaded but disabled, the tables are not created. Note The Performance Schema tables described here are available as of MySQL 8.0.17. The following sections describe the Performance Schema tables associated with the clone ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-file-summary-tables.html
The Performance Schema maintains file I/O summary tables that aggregate information about I/O operations. Each file I/O summary table has one or more grouping columns to indicate how the table aggregates events. Event names refer to names of event ...Example file I/O event summary information: mysql> SELECT * FROM performance_schema.file_summary_by_event_name\G ...
https://dev.mysql.com/doc/refman/8.0/en/ldap-pluggable-authentication.html
LDAP pluggable authentication provides these capabilities: External authentication: LDAP authentication enables MySQL Server to accept connections from users defined outside the MySQL grant tables in LDAP directories. The following tables show the ... Note LDAP pluggable authentication is an extension included in MySQL Enterprise Edition, a commercial ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-management.html
Note All partitions of a partitioned table must have the same number of subpartitions; it is not possible to change the subpartitioning once the table has been created. To change a table's partitioning scheme, it is necessary only to use the ALTER ... There are a number of ways using SQL statements to modify partitioned tables; it is possible to add, drop, redefine, merge, or split existing partitions using the partitioning extensions to the ALTER TABLE ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-maintenance-schedule.html
It is a good idea to perform table checks on a regular basis rather than waiting for problems to occur. One way to check and repair MyISAM tables is with the CHECK TABLE and REPAIR TABLE statements. It is also a good idea to enable automatic MyISAM ...The -s option (short for --silent) causes myisamchk to run in silent mode, printing messages only when errors ...
https://dev.mysql.com/doc/refman/8.0/en/sys-schema-table-statistics.html
By default, rows are sorted by descending total wait time (tables with most contention first). The schema_table_statistics and x$schema_table_statistics views have these columns: table_schema The schema that contains the table. total_latency The ...
https://dev.mysql.com/doc/refman/8.0/en/cannot-find-table.html
Even for file systems that are not case-sensitive, such as on Windows, all references to a given table within a query must use the same lettercase. You can check which tables are in the default database with SHOW TABLES.
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-foreign-cols-table.html
The INNODB_FOREIGN_COLS table provides status information about InnoDB foreign key columns. For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object Tables”. The INNODB_FOREIGN_COLS table has ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-foreign-table.html
For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object Tables”. The INNODB_FOREIGN table has these columns: ID The name (not a numeric value) of the foreign key index, preceded by the schema ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-metrics-table.html
The INNODB_METRICS table provides a wide variety of InnoDB performance information, complementing the specific focus areas of the Performance Schema tables for InnoDB. The INNODB_METRICS table has these columns: NAME A unique name for the counter.