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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/scheduler-component.html
At startup, the scheduler component registers the performance_schema.component_scheduler_tasks table, which lists the currently scheduled tasks and some runtime data about each one. After executing the task list, removes the tasks from the active ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-installation.html
This section describes how to install or uninstall MySQL Enterprise Audit, which is implemented using the audit log plugin and related elements described in Section 8.4.5.1, “Elements of MySQL Enterprise Audit”. For general information about ...
https://dev.mysql.com/doc/refman/8.0/en/alter-table-examples.html
If you drop an AUTO_INCREMENT column and then add another AUTO_INCREMENT column, the numbers are resequenced beginning with 1. When replication is used, adding an AUTO_INCREMENT column to a table might not produce the same ordering of the rows on ...
https://dev.mysql.com/doc/refman/8.0/en/call.html
For information about the effect of unhandled conditions on procedure parameters, see Section 15.6.7.8, “Condition Handling and OUT or INOUT Parameters”. To get back a value from a procedure using an OUT or INOUT parameter, pass the parameter by ... CALL sp_name([parameter[,...]]) CALL sp_name[()] The CALL statement invokes a stored procedure that was defined previously with CREATE ...
https://dev.mysql.com/doc/refman/8.0/en/charset-collation-coercibility.html
More generally, MySQL uses the concept of character set repertoire, which can sometimes be used to determine subset relationships among character sets and enable conversion of operands in operations that would otherwise produce an error. For ... In ...