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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-online-add-node-basics.html
Exception: For tables created using the MAX_ROWS option, this statement does not work; instead, use ALTER TABLE ... Data in tables created after the new node group is added is distributed automatically; however, data added to any given table tbl ...
https://dev.mysql.com/doc/refman/8.0/en/mysqladmin.html
You can use it to check the server's configuration and current status, to create and drop databases, and more. drop db_name Delete the database named db_name and all its tables. Caution Do not use this command used if the server was started with the ...Invoke mysqladmin like this: mysqladmin [options] command [command-arg] [command [command-arg]] ...
https://dev.mysql.com/doc/refman/8.0/en/binary-log-mixed.html
When one or more tables with AUTO_INCREMENT columns are updated and a trigger or stored function is invoked. When the body of a view requires row-based replication, the statement creating the view also uses it. For example, this occurs when the ...
https://dev.mysql.com/doc/refman/8.0/en/events-privileges.html
This user then creates the following event: CREATE EVENT e_insert ON SCHEDULE EVERY 7 SECOND DO INSERT INTO myschema.mytable; After this event has been created, root revokes the EVENT privilege for jon@ghidora. The EVENT privilege governs the ... To ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-best-practices.html
Run the server with the --sql_mode=NO_ENGINE_SUBSTITUTION option to prevent tables from being created with storage engines that you do not want to use. Specify a primary key for every table using the most frequently queried column or columns, or an ...Adding foreign keys ensures that referenced columns are indexed, which can improve ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb-storage-layout.html
Once your data reaches a stable size, or a growing table has increased by tens or some hundreds of megabytes, consider using the OPTIMIZE TABLE statement to reorganize the table and compact any wasted space. The reorganized tables require less disk ...This is a straightforward technique that can improve performance when other techniques such as improving index usage or tuning application code are not ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-tp-thread-group-state-table.html
Note As of MySQL 8.0.14, the thread pool INFORMATION_SCHEMA tables are also available as Performance Schema tables. (See Section 29.12.16, “Performance Schema Thread Pool Tables”.) The INFORMATION_SCHEMA tables are deprecated; expect them to be ...Each row provides information about the current state of a ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-tp-thread-group-stats-table.html
Note As of MySQL 8.0.14, the thread pool INFORMATION_SCHEMA tables are also available as Performance Schema tables. (See Section 29.12.16, “Performance Schema Thread Pool Tables”.) The INFORMATION_SCHEMA tables are deprecated; expect them to be ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-stages-history-table.html
The events_stages_history table contains the N most recent stage events that have ended per thread. Stage events are not added to the table until they have ended. When the table contains the maximum number of rows for a given thread, the oldest ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-statements-history-table.html
The events_statements_history table contains the N most recent statement events that have ended per thread. Statement events are not added to the table until they have ended. When the table contains the maximum number of rows for a given thread, ...