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https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-ddl-operations.html
Many DDL operations on tables and indexes (CREATE, ALTER, and DROP statements) can be performed online. Online DDL support for adding secondary indexes means that you can generally speed up the process of creating and loading a table and associated ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-replication-group-member-stats.html
The performance_schema.replication_group_member_stats table provides group-level information related to the certification process, and also statistics for the transactions received and originated by each individual member of the replication group.
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-disk-write-speed-aggregate-node.html
The disk_write_speed_aggregate_node table provides aggregated information per node about the speed of disk writes during LCP, backup, and restore operations.
https://dev.mysql.com/doc/refman/5.7/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/5.7/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/5.7/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/5.7/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/5.7/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/5.7/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/5.7/en/sys-schema-table-lock-waits.html
For additional information, see the description of the Performance Schema metadata_locks table at Section 25.12.12.1, “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 ...