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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-disk-write-speed-aggregate.html
The disk_write_speed_aggregate table provides aggregated information about the speed of disk writes during LCP, backup, and restore operations.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-disk-write-speed-base.html
The disk_write_speed_base table provides base information about the speed of disk writes during LCP, backup, and restore operations.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-error-messages.html
The error_messages table provides information about The error_messages table contains the following columns: error_code Numeric error code error_description Description of error error_status Error status code error_classification Error ...This is ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-membership.html
The membership table describes the view that each data node has of all the others in the cluster, including node group membership, president node, arbitrator, arbitrator successor, arbitrator connection states, and other information. We determine ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-memoryusage.html
Querying this table provides information similar to that provided by the ALL REPORT MemoryUsage command in the ndb_mgm client, or logged by ALL DUMP 1000. The memoryusage table contains the following columns: node_id The node ID of this data node.
https://dev.mysql.com/doc/refman/8.0/en/mysql-tzinfo-to-sql.html
The mysql_tzinfo_to_sql program loads the time zone tables in the mysql database. It is used on systems that have a zoneinfo database (the set of files describing time zones). One likely location for these files is the /usr/share/zoneinfo directory ...
https://dev.mysql.com/doc/refman/8.0/en/retrieving-data.html
The SELECT statement is used to pull information from a table. The general form of the statement is: SELECT what_to_select FROM which_table WHERE conditions_to_satisfy; what_to_select indicates what you want to see. This can be a list of columns, ...If it is present, conditions_to_satisfy specifies one or more conditions that rows must satisfy to qualify for ...
https://dev.mysql.com/doc/refman/8.0/en/sys-schema-table-lock-waits.html
For additional information, see the description of the Performance Schema metadata_locks table at Section 29.12.13.3, “The metadata_locks Table”. The schema_table_lock_waits and x$schema_table_lock_waits views have these columns: object_schema ... These views display which sessions are blocked waiting on metadata locks, and what is blocking ...
https://dev.mysql.com/doc/refman/8.0/en/binary-log.html
The binary log contains “events” that describe database changes such as table creation operations or changes to table data. You can use the --log-bin option to specify an alternative location, by adding a leading absolute path name to the base ...It also contains events for statements that potentially could have made changes (for example, a DELETE which matched no rows), unless row-based logging is ...
https://dev.mysql.com/doc/refman/8.0/en/function-optimization.html
If a function is tagged nondeterministic, a reference to it in a WHERE clause is evaluated for every row (when selecting from one table) or combination of rows (when selecting from a multiple-table join). MySQL also determines when to evaluate ...A ...