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https://dev.mysql.com/doc/refman/8.4/en/too-many-connections.html
If clients encounter Too many connections errors when attempting to connect to the mysqld server, all available connections are in use by other clients. The permitted number of connections is controlled by the max_connections system variable. The ...
https://dev.mysql.com/doc/refman/8.4/en/triggers.html
A trigger is a named database object that is associated with a table, and that activates when a particular event occurs for the table. Some uses for triggers are to perform checks of values to be inserted into a table or to perform calculations on ...
https://dev.mysql.com/doc/refman/8.4/en/tuning-trace-purging.html
Thus, if a statement contains substatements (such as invoking stored procedures, stored functions, or triggers), the topmost statement and substatements each generate one trace, but at the end of execution, the trace for only the last substatement ...
https://dev.mysql.com/doc/refman/8.4/en/upgrade-before-you-begin.html
The backup should include the mysql system database, which contains the MySQL data dictionary tables and system tables. Important Downgrade from MySQL 8.4 to MySQL 8.3, or from a MySQL 8.4 release to a previous MySQL 8.4 release, is not supported.
https://dev.mysql.com/doc/refman/8.4/en/validate-password-installation.html
This section describes how to install and uninstall the validate_password password-validation component. For general information about installing and uninstalling components, see Section 7.5, “MySQL Components”. Note If you install MySQL 8.4 ...
https://dev.mysql.com/doc/refman/8.4/en/validate-password.html
The validate_password component serves to improve security by requiring account passwords and enabling strength testing of potential passwords. This component exposes system variables that enable you to configure password policy, and status ...
https://dev.mysql.com/doc/refman/8.4/en/view-algorithms.html
The optional ALGORITHM clause for CREATE VIEW or ALTER VIEW is a MySQL extension to standard SQL. For MERGE, the text of a statement that refers to the view and the view definition are merged such that parts of the view definition replace ...
https://dev.mysql.com/doc/refman/8.4/en/view-metadata.html
To obtain metadata about views: Query the VIEWS table of the INFORMATION_SCHEMA database.
https://dev.mysql.com/doc/refman/8.4/en/view-restrictions.html
The maximum number of tables that can be referenced in the definition of a view is 61. View processing is not optimized: It is not possible to create an index on a view. Indexes can be used for views processed using the merge algorithm. However, a ...
https://dev.mysql.com/doc/refman/8.4/en/views.html
Views are stored queries that when invoked produce a result set. The following discussion describes the syntax for creating and dropping views, and shows some examples of how to use them. Additional Resources You may find the MySQL User Forums ...