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https://dev.mysql.com/doc/refman/8.0/en/tuning-trace-purging.html
A subsequent SELECT from the OPTIMIZER_TRACE table returns the first limit traces of the offset oldest stored traces (if offset >= 0), or the first limit traces of the -offset newest stored traces (if offset < 0). Thus, if a statement contains ...
https://dev.mysql.com/doc/refman/8.0/en/updating-yum-repo.html
mysql_upgrade also performs other functions; for details, see Section 6.4.5, “mysql_upgrade — Check and Upgrade MySQL Tables”. For supported Yum-based platforms (see Section 2.5.1, “Installing MySQL on Linux Using the MySQL Yum ...
https://dev.mysql.com/doc/refman/8.0/en/validate-password-options-variables.html
This section describes the system and status variables that validate_password provides to enable its operation to be configured and monitored. This applies only when changing an existing password, and has no effect when setting a user account's ...
https://dev.mysql.com/doc/refman/8.0/en/window-function-optimization.html
Window functions affect the strategies the optimizer considers: Derived table merging for a subquery is disabled if the subquery has window functions. Semijoins are not applicable to window function optimization because semijoins apply to ...
https://dev.mysql.com/doc/refman/8.0/en/windows-select-server.html
The following table shows the available servers for Windows in MySQL 8.0. Binary Description mysqld Optimized binary with named-pipe support mysqld-debug Like mysqld, but compiled with full debugging and automatic memory allocation checking All of ...
https://dev.mysql.com/doc/refman/8.0/en/windows-server-first-start.html
Note The initial root account in the MySQL grant tables has no password. This section gives a general overview of starting the MySQL server. The following sections provide more specific information for starting the MySQL server from the command ...
https://dev.mysql.com/doc/refman/8.0/en/administrative-connection-interface.html
As mentioned in Connection Volume Management, to allow for the need to perform administrative operations even when max_connections connections are already established on the interfaces used for ordinary connections, the MySQL server permits a ...
https://dev.mysql.com/doc/refman/8.0/en/batch-mode.html
In the previous sections, you used mysql interactively to enter statements and view the results. If you want the script to continue even if some of the statements in it produce errors, you should use the --force command-line option. Why use a ...
https://dev.mysql.com/doc/refman/8.0/en/case.html
(The indentation used here in the ELSE clause is for purposes of clarity only, and is not otherwise significant.) DELIMITER | CREATE PROCEDURE p() BEGIN DECLARE v INT DEFAULT 1; CASE v WHEN 2 THEN SELECT v; WHEN 3 THEN SELECT 0; ELSE BEGIN END; END ... CASE case_value WHEN when_value THEN statement_list [WHEN when_value THEN statement_list] ...
https://dev.mysql.com/doc/refman/8.0/en/charset-server.html
The server character set and collation are used as default values if the database character set and collation are not specified in CREATE DATABASE statements. MySQL Server has a server character set and a server collation. By default, these are ...