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https://dev.mysql.com/doc/refman/9.7/en/processlist-access.html
The following discussion enumerates the sources of process information, the privileges required to see process information, and describes the content of process list entries. The other sources have negative performance consequences because they ...
https://dev.mysql.com/doc/refman/9.7/en/proxy-users.html
The plugin that authenticates a given connection may request that the connecting (external) user be treated as a different user for privilege-checking purposes. This enables the external user to be a proxy for the second user; that is, to assume the ...
https://dev.mysql.com/doc/refman/9.7/en/replication-gtids-failover.html
There are a number of techniques when using MySQL Replication with Global Transaction Identifiers (GTIDs) for provisioning a new replica which can then be used for scaleout, being promoted to source as necessary for failover. Each identifier ...
https://dev.mysql.com/doc/refman/9.7/en/replication-solutions-switch.html
You can tell a replica to change to a new source using the CHANGE REPLICATION SOURCE TO statement. The replica does not check whether the databases on the source are compatible with those on the replica; it simply begins reading and executing ...
https://dev.mysql.com/doc/refman/9.7/en/security-plugins.html
MySQL includes several components and plugins that implement security features: Plugins for authenticating attempts by clients to connect to MySQL Server. For general discussion of the authentication process, see Section 8.2.17, “Pluggable ...
https://dev.mysql.com/doc/refman/9.7/en/show-processlist.html
SHOW [FULL] PROCESSLIST Important The INFORMATION SCHEMA implementation of SHOW PROCESSLIST is deprecated and subject to removal in a future MySQL release. It is recommended to use the Performance Schema implementation of SHOW PROCESSLIST instead.
https://dev.mysql.com/doc/refman/9.7/en/srjs-data-arguments.html
Most MySQL data types are supported for MLE stored program input and output arguments, as well as for return data types. The data types are listed here: Integer: All variants and aliases of MySQL integer data types are supported, including TINYINT, ...
https://dev.mysql.com/doc/refman/9.7/en/storage-requirements.html
InnoDB Table Storage Requirements NDB Table Storage Requirements Numeric Type Storage Requirements Date and Time Type Storage Requirements String Type Storage Requirements Spatial Type Storage Requirements JSON Storage Requirements The storage ...
https://dev.mysql.com/doc/refman/9.7/en/subquery-optimization-with-exists.html
Certain optimizations are applicable to comparisons that use the IN (or =ANY) operator to test subquery results. This section discusses these optimizations, particularly with regard to the challenges that NULL values present. The last part of the ...
https://dev.mysql.com/doc/refman/9.7/en/user-variables.html
You can store a value in a user-defined variable in one statement and refer to it later in another statement. This enables you to pass values from one statement to another. User variables are written as @var_name, where the variable name var_name ...