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https://dev.mysql.com/doc/refman/8.4/en/show-relaylog-events.html
Some events relating to the setting of user and system variables are not included in the output from SHOW RELAYLOG EVENTS. SHOW RELAYLOG EVENTS [IN 'log_name'] [FROM pos] [LIMIT [offset,] row_count] [channel_option] channel_option: FOR CHANNEL ...
https://dev.mysql.com/doc/refman/8.4/en/stop-group-replication.html
Any user credentials that you specified in the START GROUP_REPLICATION statement when starting Group Replication on this member are removed from memory, and must be supplied when you start Group Replication again. This statement requires the ...
https://dev.mysql.com/doc/refman/8.4/en/stored-program-variables.html
System variables and user-defined variables can be used in stored programs, just as they can be used outside stored-program context. In addition, stored programs can use DECLARE to define local variables, and stored routines (procedures and ...
https://dev.mysql.com/doc/refman/8.4/en/sys-format-statement.html
Configuration Options format_statement() operation can be modified using the following configuration options or their corresponding user-defined variables (see Section 30.4.2.1, “The sys_config Table”): statement_truncate_len, ... Given a string ...
https://dev.mysql.com/doc/refman/8.4/en/sys-host-summary.html
These views summarize statement activity, file I/O, and connections, grouped by host. The host_summary and x$host_summary views have these columns: host The host from which the client connected. Rows for which the HOST column in the underlying ...
https://dev.mysql.com/doc/refman/8.4/en/sys-io-by-thread-by-latency.html
The io_by_thread_by_latency and x$io_by_thread_by_latency views have these columns: user For foreground threads, the account associated with the thread. These views summarize I/O consumers to display time waiting for I/O, grouped by thread.
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-is-account-enabled.html
Returns YES or NO to indicate whether Performance Schema instrumentation for a given account is enabled. Parameters in_host VARCHAR(60): The host name of the account to check. Example mysql> SELECT sys.ps_is_account_enabled('localhost', 'root'); ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-setup-reset-to-default.html
row *************************** status: Resetting: setup_actors DELETE FROM performance_schema.setup_actors WHERE NOT (HOST = '%' AND USER = '%' AND ROLE = '%') *************************** 1. Parameters in_verbose BOOLEAN: Whether to display ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-thread-trx-info.html
Configuration Options ps_thread_trx_info() operation can be modified using the following configuration options or their corresponding user-defined variables (see Section 30.4.2.1, “The sys_config Table”): ps_thread_trx_info.max_length, ...
https://dev.mysql.com/doc/refman/8.4/en/sys-schema-prerequisites.html
Before using the sys schema, the prerequisites described in this section must be satisfied. Because the sys schema provides an alternative means of accessing the Performance Schema, the Performance Schema must be enabled for the sys schema to work.