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https://dev.mysql.com/doc/refman/8.0/en/tracing-example.html
Now we can examine the trace, whose first column (QUERY), containing the original statement to be traced, is shown here: SELECT * FROM INFORMATION_SCHEMA.OPTIMIZER_TRACE\G *************************** 1. row *************************** QUERY: SELECT ...
https://dev.mysql.com/doc/refman/8.0/en/uln-installation.html
Note Oracle Linux 8 is supported as of MySQL 8.0.17, and the community Tools and Connectors channels were added with the MySQL 8.0.24 release. Linux supports a number of different solutions for installing MySQL, covered in Section 2.5, ...
https://dev.mysql.com/doc/refman/8.0/en/uninstall-component.html
Note This statement has no effect for keyring components, which are loaded using a manifest file and cannot be uninstalled. A component provides services that are available to the server and other components; see Section 7.5, “MySQL Components”.
https://dev.mysql.com/doc/refman/8.0/en/update.html
Note Unlike the case when using PARTITION with an INSERT or REPLACE statement, an otherwise valid UPDATE ... UPDATE is a DML statement that modifies rows in a table. An UPDATE statement can start with a WITH clause to define common table ...
https://dev.mysql.com/doc/refman/8.0/en/updating-yum-repo.html
Notes Before performing any update to MySQL, follow carefully the instructions in Chapter 3, Upgrading MySQL. For supported Yum-based platforms (see Section 2.5.1, “Installing MySQL on Linux Using the MySQL Yum Repository”, for a list), you can ...
https://dev.mysql.com/doc/refman/8.0/en/upgrade-prerequisites.html
Note Changing the lower_case_table_names setting at upgrade time is not recommended. Before upgrading to the latest MySQL 8.0 release, ensure the upgrade readiness of your current MySQL 5.7 or MySQL 8.0 server instance by performing the preliminary ...
https://dev.mysql.com/doc/refman/8.0/en/upgrading.html
Note In the following discussion, MySQL commands that must be run using a MySQL account with administrative privileges include -u root on the command line to specify the MySQL root user. This chapter describes the steps to upgrade a MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/user-names.html
The preceding notes do not apply for ucs2, utf16, and utf32, which are not permitted as client character sets. MySQL stores accounts in the user table of the mysql system database. An account is defined in terms of a user name and the client host ...
https://dev.mysql.com/doc/refman/8.0/en/user-resources.html
Note The --old-style-user-limits option is deprecated in MySQL 8.0.30, and is subject to removal in a future release of MySQL. One means of restricting client use of MySQL server resources is to set the global max_user_connections system variable ...
https://dev.mysql.com/doc/refman/8.0/en/using-explain.html
Note EXPLAIN can also be used to obtain information about the columns in a table. The EXPLAIN statement provides information about how MySQL executes statements: EXPLAIN works with SELECT, DELETE, INSERT, REPLACE, and UPDATE statements. When ...