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https://dev.mysql.com/doc/refman/5.7/en/performance-schema-setup-actors-table.html
For each new foreground thread, the Performance Schema matches the user and host for the thread against the rows of the setup_actors table. This enables instrumenting and historical event logging to be applied selectively per host, user, or account ... The setup_actors table contains information that determines whether to enable monitoring and historical event logging for new foreground server threads (threads associated with client ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-table-reference.html
The following table summarizes all available Performance Schema tables. For greater detail, see the individual table descriptions. Table 25.1 Performance Schema Tables Table Name Description Deprecated accounts Connection statistics per client ...
https://dev.mysql.com/doc/refman/5.7/en/replication-gtids-howto.html
If you are starting with new servers, see Section 16.1.2.2, “Creating a User for Replication” for information about adding a specific user for replication connections and Section 16.1.2.1, “Setting the Replication Source Configuration” for ... This section describes a process for configuring and starting GTID-based replication in MySQL ...
https://dev.mysql.com/doc/refman/5.7/en/rewriter-query-rewrite-plugin-usage.html
The change means that applications must refer to user_id rather than id in the WHERE clause, but old applications that cannot be updated no longer work properly. To match the statement SELECT * FROM appdb.users WHERE id = value and rewrite it as ...
https://dev.mysql.com/doc/refman/5.7/en/secure-client-programming.html
Handle External Data Properly Handle MySQL Error Messages Properly Handle External Data Properly Applications that access MySQL should not trust any data entered by users, who can try to trick your code by entering special or escaped character ...
https://dev.mysql.com/doc/refman/5.7/en/sha256-pluggable-authentication.html
MySQL provides two authentication plugins that implement SHA-256 hashing for user account passwords: sha256_password: Implements basic SHA-256 authentication. If sha256_password is the default authentication plugin, a simpler CREATE USER syntax can ...caching_sha2_password: Implements SHA-256 authentication (like sha256_password), but uses caching on the server side for better performance and has additional features for wider ...
https://dev.mysql.com/doc/refman/5.7/en/sys-schema-object-index.html
The following tables list sys schema objects and provide a short description of each one.
https://dev.mysql.com/doc/refman/5.7/en/sys-sys-config-insert-set-user.html
For rows added to the sys_config table by INSERT statements, the sys_config_insert_set_user trigger sets the set_by column to the current user.
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-size-pl.html
(Many Linux and other operating system distributions provide their own packages for this library.) A MySQL user account having the necessary privileges. If you do not wish to use an existing account, then creating one using GRANT USAGE ON ... This ...
https://dev.mysql.com/doc/refman/5.7/en/binary-installation.html
Create a mysql User and Group If your system does not already have a user and group to use for running mysqld, you may need to create them. The following commands add the mysql group and the mysql user. You might want to call the user and group ...