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https://dev.mysql.com/doc/refman/8.4/en/example-user-variables.html
You can employ MySQL user variables to remember results without having to store them in temporary variables in the client.
https://dev.mysql.com/doc/refman/8.4/en/ignoring-user.html
If you get the following error, it means that when mysqld was started or when it reloaded the grant tables, it found an account in the user table that had an invalid password. Found wrong password for user 'some_user'@'some_host'; ignoring user As ...To fix this problem, assign a new, valid password to the ...
https://dev.mysql.com/doc/refman/8.4/en/replication-features-user-names.html
The maximum length for user names in MySQL 8.4 is 32 characters. Replication of user names longer than 16 characters fails when the replica runs a version of MySQL previous to 5.7, because those versions support only shorter user names. This occurs ...
Oracle Enterprise Manager for MySQL Database User's Guide :: 6.43 Sys Schema User Statistics Metrics
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-metric-sysschema-userstatistics-category.html
Lists the Sys Schema User Statistics metrics and provides a brief description of each. Table 6.43 Sys Schema User Statistics Metrics NameDescriptionCurrent Connections The current number of connections for the user. Current Memory The current ...
https://dev.mysql.com/doc/refman/8.4/en/socket-pluggable-authentication.html
The authentication_string value can be specified using an IDENTIFIED ...AS clause with CREATE USER or ALTER USER. The plugin uses the SO_PEERCRED socket option to obtain information about the user running the client program. To uninstall it, use ...
https://dev.mysql.com/doc/heatwave-aws/en/heatwave-aws-user-configurable-shape-dependent-system-variables.html
User-Configurable Shape-Dependent System Variables 19.6 User-Configurable Shape-Dependent System Variables Shape-dependent global system variables are linked to, and tuned for, a specific MySQL shape. Note: innodb_buffer_pool_instances , ...
https://dev.mysql.com/doc/refman/8.4/en/user-resources.html
To establish resource limits for an account at account-creation time, use the CREATE USER statement. One means of restricting client use of MySQL server resources is to set the global max_user_connections system variable to a nonzero value. In ...
https://dev.mysql.com/doc/ndbapi/en/ndb-error-codes-user-defined-error.html
The following list enumerates all NDB errors of type UD (User defined error).
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-user-variable-tables.html
The Performance Schema provides a user_variables_by_thread table that exposes user-defined variables. These are variables defined within a specific session and include a @ character preceding the name; see Section 11.4, “User-Defined Variables”. The user_variables_by_thread table has these columns: THREAD_ID The thread identifier of the session in which the variable is ...
https://dev.mysql.com/doc/extending-mysql/8.4/en/writing-authentication-plugins-server-side.html
Suppose that you create an account using the following statement: CREATE USER 'my_user'@'localhost' IDENTIFIED WITH my_plugin AS 'my_auth_string'; When my_user connects from the local host, the server invokes my_plugin and passes 'my_auth_string' to ...This is useful if the server plugin does not care about the client plugin or what user name or password it ... Declare the server-side plugin with the usual general descriptor format ...