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https://dev.mysql.com/doc/refman/8.4/en/mysqladmin.html
You can use it to check the server's configuration and current status, to create and drop databases, and more. Invoke mysqladmin like this: mysqladmin [options] command [command-arg] [command [command-arg]] ... Some of the commands take an argument ...
https://dev.mysql.com/doc/refman/8.4/en/mysqlcheck.html
The mysqlcheck client performs table maintenance: It checks, repairs, optimizes, or analyzes tables. Each table is locked and therefore unavailable to other sessions while it is being processed, although for check operations, the table is locked ...
https://dev.mysql.com/doc/refman/8.4/en/mysqlshow.html
The mysqlshow client can be used to quickly see which databases exist, their tables, or a table's columns or indexes. The same information can be obtained by using those statements directly. For example, you can issue them from the mysql client ...
https://dev.mysql.com/doc/refman/8.4/en/option-file-options.html
Most MySQL programs that support option files handle the following options. Because these options affect option-file handling, they must be given on the command line and not in an option file. To work properly, each of these options must be given ...
https://dev.mysql.com/doc/refman/8.4/en/outer-join-optimization.html
MySQL implements an A LEFT JOIN B join_specification as follows: Table B is set to depend on table A and all tables on which A depends. Table A is set to depend on all tables (except B) that are used in the LEFT JOIN condition. The LEFT JOIN ...
https://dev.mysql.com/doc/refman/8.4/en/server-configuration.html
The MySQL server, mysqld, has many command options and system variables that can be set at startup to configure its operation. To determine the default command option and system variable values used by the server, execute this command: $> mysqld ...
https://dev.mysql.com/doc/refman/8.4/en/spatial-relation-functions-mbr.html
MySQL provides several MySQL-specific functions that test the relationship between minimum bounding rectangles (MBRs) of two geometries g1 and g2. The return values 1 and 0 indicate true and false, respectively. The MBR (also known as the bounding ...
https://dev.mysql.com/doc/refman/8.4/en/subquery-materialization.html
The optimizer uses materialization to enable more efficient subquery processing. Materialization speeds up query execution by generating a subquery result as a temporary table, normally in memory. The first time MySQL needs the subquery result, it ...
https://dev.mysql.com/doc/mysql-cluster-manager/8.4/en/mcm-using-import-cluster-create-configure.html
Once this is done, we modify the target cluster's configuration until it matches that of the wild cluster that we want to import. At a later point in the example, we also show how to test the configuration in a dry run before attempting to perform ...
https://dev.mysql.com/doc/extending-mysql/8.4/en/plugin-status-system-variables.html
The server plugin interface enables plugins to expose status and system variables using the status_vars and system_vars members of the general plugin descriptor. The status_vars member of the general plugin descriptor, if not 0, points to an array ...