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https://dev.mysql.com/doc/refman/5.7/en/return.html
RETURN expr The RETURN statement terminates execution of a stored function and returns the value expr to the function caller. There must be at least one RETURN statement in a stored function. There may be more than one if the function has multiple ...
https://dev.mysql.com/doc/refman/5.7/en/validate-password-installation.html
Note If you installed MySQL 5.7 using the MySQL Yum repository, MySQL SLES Repository, or RPM packages provided by Oracle, validate_password is enabled by default after you start your MySQL Server for the first time. With this plugin-loading method, ... This section describes how to install the validate_password password-validation ...
https://dev.mysql.com/doc/refman/5.7/en/using-explain.html
The EXPLAIN statement provides information about how MySQL executes statements: EXPLAIN works with SELECT, DELETE, INSERT, REPLACE, and UPDATE statements. When EXPLAIN is used with an explainable statement, MySQL displays information from the ...
https://dev.mysql.com/doc/refman/5.7/en/key-cache-restructuring.html
A key cache can be restructured at any time by updating its parameter values. File system caching is not as efficient as using a key cache, so although queries execute, a slowdown can be anticipated. For example: mysql> SET GLOBAL ...
https://dev.mysql.com/doc/refman/5.7/en/shutdown.html
Because status variables are initialized for each server startup and do not persist across restarts, Com_shutdown normally has a value of zero, but can be nonzero if SHUTDOWN statements were executed but failed. SHUTDOWN provides an SQL-level ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-backup-troubleshooting.html
If an error code is returned when issuing a backup request, the most likely cause is insufficient memory or disk space. You should check that there is enough memory allocated for the backup. Important If you have set BackupDataBufferSize and ...
https://dev.mysql.com/doc/refman/5.7/en/replication-setup-replicas.html
To do this, execute the following statement on the replica, replacing the option values with the actual values relevant to your system: mysql> CHANGE MASTER TO -> MASTER_HOST='source_host_name', -> MASTER_USER='replication_user_name', -> ...Before ...
https://dev.mysql.com/doc/refman/5.7/en/federated-create.html
The optimization occurs because the query sent to the remote server includes the contents of the WHERE clause, and is sent to the remote server and subsequently executed locally. To create a FEDERATED table you should follow these steps: Create the ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-mgm-definition.html
Note If neither the ExecuteOnComputer nor the HostName parameter is present, the default value localhost is assumed for both. ExecuteOnComputer Version (or later) NDB 7.5.0 Type or units name Default [...] Range ... maxsize: The maximum size (in ...
https://dev.mysql.com/doc/refman/5.7/en/audit-log-filtering.html
As of MySQL 5.7.20, filter rules have the capability of blocking (aborting) execution of qualifying events, in addition to existing capabilities for event logging. Constraints on Audit Log Filtering Functions Audit log filtering functions are ...