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https://dev.mysql.com/doc/refman/5.7/en/performance-schema-thread-filtering.html
For foreground threads (resulting from client connections), the initial values of the INSTRUMENTED and HISTORY columns in threads table rows are determined by whether the user account associated with a thread matches any row in the setup_actors ...
https://dev.mysql.com/doc/refman/5.7/en/upgrading-from-previous-series.html
This means that if you migrate users from a MySQL 5.6 server (any version) to one running MySQL 5.7, you must make sure to grant this privilege explicitly to any users which need to be able to create foreign keys. System Table Changes Incompatible ... Before upgrading to MySQL 5.7, review the changes described in this section to identify those that apply to your current MySQL installation and ...
https://dev.mysql.com/doc/refman/5.7/en/show-create-user.html
SHOW CREATE USER user This statement shows the CREATE USER statement that creates the named user. The statement requires the SELECT privilege for the mysql system database, except to display information for the current user. It is also possible to ...To name the account, use the format described in Section 6.2.4, “Specifying Account ...
https://dev.mysql.com/doc/refman/5.7/en/sys-user-summary.html
These views summarize statement activity, file I/O, and connections, grouped by user. The user_summary and x$user_summary views have these columns: user The client user name. Rows for which the USER column in the underlying Performance Schema table ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-security-mysql-privileges.html
If you wish, you can enable automatic distribution of MySQL users and privileges across NDB Cluster SQL nodes; see Section 21.6.13, “Distributed Privileges Using Shared Grant Tables”, for details. Once a MySQL user is granted privileges on an ...
https://dev.mysql.com/doc/refman/5.7/en/downgrading-to-previous-series.html
System Table Changes InnoDB Changes Logging Changes SQL Changes System Table Changes In MySQL 5.7.13, system table columns that store user@host string values were increased in length. Before downgrading to a previous release, change each affected ...
https://dev.mysql.com/doc/refman/5.7/en/show-processlist.html
If you have the PROCESS privilege, you can see all threads, even those belonging to other users. Otherwise (without the PROCESS privilege), nonanonymous users have access to information about their own threads but not threads for other users, and ...
https://dev.mysql.com/doc/refman/5.7/en/stored-objects-security.html
Administrators can prevent users from creating stored objects that specify highly privileged DEFINER accounts by not granting them the SUPER privilege. In some cases, you can prevent references to these objects by not granting unauthorized users ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-users-table.html
The users table contains a row for each user who has connected to the MySQL server. For each user name, the table counts the current and total number of connections. To set the table size explicitly, set the performance_schema_users_size system ...
https://dev.mysql.com/doc/refman/5.7/en/create-procedure.html
If the DEFINER clause is present, the privileges required depend on the user value, as discussed in Section 23.6, “Stored Object Access Control”. By default, MySQL automatically grants the ALTER ROUTINE and EXECUTE privileges to the routine ...