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https://dev.mysql.com/doc/refman/8.0/en/stored-objects-security.html
Stored programs (procedures, functions, triggers, and events) and views are defined prior to use and, when referenced, execute within a security context that determines their privileges. The privileges applicable to execution of a stored object are ...
https://dev.mysql.com/doc/refman/8.0/en/stored-program-restrictions.html
When using row-based replication, triggers on the replica are not activated by statements originating on the source. Some of the restrictions noted here apply to all stored routines; that is, both to stored procedures and stored functions. There are ...
https://dev.mysql.com/doc/refman/8.0/en/sys-host-summary.html
Rows for which the HOST column in the underlying Performance Schema table is NULL are assumed to be for background threads and are reported with a host name of background. These views summarize statement activity, file I/O, and connections, grouped ...
https://dev.mysql.com/doc/refman/8.0/en/sys-io-by-thread-by-latency.html
These views summarize I/O consumers to display time waiting for I/O, grouped by thread. The io_by_thread_by_latency and x$io_by_thread_by_latency views have these columns: user For foreground threads, the account associated with the thread.
https://dev.mysql.com/doc/refman/8.0/en/sys-io-global-by-file-by-bytes.html
By default, rows are sorted by descending total I/O (bytes read and written). These views summarize global I/O consumers to display amount of I/O, grouped by file. The io_global_by_file_by_bytes and x$io_global_by_file_by_bytes views have these ...
https://dev.mysql.com/doc/refman/8.0/en/sys-io-global-by-file-by-latency.html
These views summarize global I/O consumers to display time waiting for I/O, grouped by file. The io_global_by_file_by_latency and x$io_global_by_file_by_latency views have these columns: file The file path name. total_latency The total wait time of ...
https://dev.mysql.com/doc/refman/8.0/en/sys-io-global-by-wait-by-bytes.html
By default, rows are sorted by descending total I/O (bytes read and written). These views summarize global I/O consumers to display amount of I/O and time waiting for I/O, grouped by event. The io_global_by_wait_by_bytes and ...
https://dev.mysql.com/doc/refman/8.0/en/sys-io-global-by-wait-by-latency.html
These views summarize global I/O consumers to display amount of I/O and time waiting for I/O, grouped by event. The io_global_by_wait_by_latency and x$io_global_by_wait_by_latency views have these columns: event_name The I/O event name, with the ...
https://dev.mysql.com/doc/refman/8.0/en/sys-latest-file-io.html
These views summarize file I/O activity, grouped by file and thread. The latest_file_io and x$latest_file_io views have these columns: thread For foreground threads, the account associated with the thread (and port number for TCP/IP connections).
https://dev.mysql.com/doc/refman/8.0/en/sys-memory-by-thread-by-current-bytes.html
By default, rows are sorted by descending amount of memory used. current_max_alloc The largest single current memory allocation in bytes for the thread. The memory_by_thread_by_current_bytes and x$memory_by_thread_by_current_bytes views have these ...