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https://dev.mysql.com/doc/refman/5.7/en/time-zone-support.html
This section describes the time zone settings maintained by MySQL, how to load the system tables required for named time support, how to stay current with time zone changes, and how to enable leap-second support. Time Zone Variables Populating the ...For information about time zone settings in replication setups, see Section 16.4.1.15, “Replication and System Functions” and Section 16.4.1.31, “Replication and Time ...
https://dev.mysql.com/doc/refman/5.7/en/added-deprecated-removed.html
innodb_tmpdir: Directory location for temporary table files created during online ALTER TABLE operations. disable-partition-engine-check: Whether to disable startup check for tables without native partitioning. group_replication_recovery_ssl_cert: ... Options and Variables Introduced in MySQL 5.7 Options and Variables Deprecated in MySQL 5.7 Options and Variables Removed in MySQL 5.7 This section lists server variables, status variables, and options that were added for the first time, have been deprecated, or have been removed in MySQL ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-benefits.html
InnoDB tables have the following benefits: If the server unexpectedly exits because of a hardware or software issue, regardless of what was happening in the database at the time, you don't need to do anything special after restarting the database.
https://dev.mysql.com/doc/refman/5.7/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/5.7/en/mysql-cluster-ndbinfo-operations-per-fragment.html
The operations_per_fragment table provides information about the operations performed on individual fragments and fragment replicas, as well as about some of the results from these operations. This currently has the following formats: Base table: ...The syntax just shown for fully qualified object names is an internal interface which is subject to change in future ...
https://dev.mysql.com/doc/refman/5.7/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/5.7/en/information-schema-innodb-cmp-table.html
The INNODB_CMP and INNODB_CMP_RESET tables provide status information on operations related to compressed InnoDB tables. The INNODB_CMP and INNODB_CMP_RESET tables have these columns: PAGE_SIZE The compressed page size in bytes. row ...COMPRESS_OPS ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-table-info.html
The table_info table provides information about logging, checkpointing, distribution, and storage options in effect for individual NDB tables.
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-host-cache-table.html
The host_cache_size system variable controls the size of the host cache, as well as the size of the host_cache table. Because the host_cache table exposes the contents of the host cache, it can be examined using SELECT statements. The Performance ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-system-variable-tables.html
Note The value of the show_compatibility_56 system variable affects the information available from the tables described here. System variable information is available in these Performance Schema tables: global_variables: Global system variables. An ...For details, see the description of that variable in Section 5.1.7, “Server System ...