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https://dev.mysql.com/doc/refman/8.0/en/mysql-server.html
MySQL distributions on Unix and Unix-like system include a script named mysql.server, which starts the MySQL server using mysqld_safe. It can be used on systems such as Linux and Solaris that use System V-style run directories to start and stop ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-ndb-cluster-tables.html
If synchronization of the object fails due to a temporary error, it is picked up and added back to the queue (and to this table) the next time NDB performs mismatch detection; if the attempts fails due a permanent error, the object is added to the ...Prior to NDB 8.0.21, the only information readily accessible to users about this process was in the form of logging messages and object counts available (beginning with NDB 8.0.18) as the status variables Ndb_metadata_detected_count, Ndb_metadata_synced_count, and Ndb_metadata_excluded_count (prior to NDB 8.0.22, this variable was named ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-obtaining-parent-events.html
Rows of this table have a THREAD_ID column indicating the thread ID of the session that owns the lock, and an EVENT_ID column indicating the Performance Schema event that caused the lock. If a statement that executed a long time ago took a lock but ...The relation is based on a nested set data model, so the join has several ...
https://dev.mysql.com/doc/refman/8.0/en/replication-snapshot-method.html
Employing this method with a table using a storage engine that has complex caching or logging algorithms requires extra steps to produce a perfect “point in time” snapshot: the initial copy command could leave out cache information and logging ...This can be more efficient than using mysqldump and importing the file on each replica, because it skips the overhead of updating indexes as the INSERT statements are ...
https://dev.mysql.com/doc/refman/8.0/en/sys-statement-performance-analyzer.html
The views are calculated based on the overall and/or delta activity. If in_table is NULL and no snapshot exists, a new snapshot is created. The in_views parameter and the statement_performance_analyzer.limit configuration option affect the operation ... Creates a report of the statements running on the ...
https://dev.mysql.com/doc/refman/8.0/en/view-restrictions.html
In this case, the view is stored in a temporary table and thus you are not really selecting from the table in a subquery and modifying it at the same time. There is a general principle that you cannot modify a table and select from the same table in ... The maximum number of tables that can be referenced in the definition of a view is ...
https://dev.mysql.com/doc/refman/8.0/en/window-functions-named-windows.html
Windows can be defined and given names by which to refer to them in OVER clauses. If present in a query, the WINDOW clause falls between the positions of the HAVING and ORDER BY clauses, and has this syntax: WINDOW window_name AS (window_spec) [, ...You need only modify the window definition in the WINDOW clause, rather than multiple OVER clause ...
https://dev.mysql.com/doc/refman/8.0/en/windows-postinstallation.html
GUI tools exist that perform most of the tasks described in this section, including: MySQL Installer: Used to install and upgrade MySQL products. If necessary, initialize the data directory and create the MySQL grant tables. Before assigning a ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-autocommit-commit-rollback.html
A session that has autocommit enabled can perform a multiple-statement transaction by starting it with an explicit START TRANSACTION or BEGIN statement and ending it with a COMMIT or ROLLBACK statement. A COMMIT or ROLLBACK statement ends the ...If ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-benchmarking.html
If InnoDB is not the default storage engine, you can determine if your database server and applications work correctly with InnoDB by restarting the server with --default-storage-engine=InnoDB defined on the command line or with ...If a table ...