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https://dev.mysql.com/doc/refman/8.0/en/sys-innodb-lock-waits.html
The innodb_lock_waits and x$innodb_lock_waits views have these columns: wait_started The time at which the lock wait started. wait_age How long the lock has been waited for, as a TIME value. waiting_trx_age How long the waiting transaction has been ... These views summarize the InnoDB locks that transactions are waiting ...
https://dev.mysql.com/doc/refman/8.0/en/sys-ps-thread-trx-info.html
Returns a JSON object containing information about a given thread. The information includes the current transaction, and the statements it has already executed, derived from the Performance Schema events_transactions_current and ...
https://dev.mysql.com/doc/refman/8.0/en/sys-user-summary.html
statement_latency The total wait time of timed statements for the user. statement_avg_latency The average wait time per timed statement for the user. file_io_latency The total wait time of timed file I/O events for the user. These views summarize ...
https://dev.mysql.com/doc/refman/8.0/en/sys-waits-by-host-by-latency.html
total_latency The total wait time of timed occurrences of the event for the host. avg_latency The average wait time per timed occurrence of the event for the host. max_latency The maximum single wait time of timed occurrences of the event for the ...
https://dev.mysql.com/doc/refman/8.0/en/sys-waits-by-user-by-latency.html
total_latency The total wait time of timed occurrences of the event for the user. avg_latency The average wait time per timed occurrence of the event for the user. max_latency The maximum single wait time of timed occurrences of the event for the ...
https://dev.mysql.com/doc/refman/8.0/en/sys-waits-global-by-latency.html
total_latency The total wait time of timed occurrences of the event. avg_latency The average wait time per timed occurrence of the event. max_latency The maximum single wait time of timed occurrences of the event. The waits_global_by_latency and ...
https://dev.mysql.com/doc/refman/8.0/en/trigger-syntax.html
It also includes clauses that specify the trigger action time, the triggering event, and what to do when the trigger activates: The keyword BEFORE indicates the trigger action time. The statement following FOR EACH ROW defines the trigger body; that ... To create a trigger or drop a trigger, use the CREATE TRIGGER or DROP TRIGGER statement, described in Section 15.1.22, “CREATE TRIGGER Statement”, and Section 15.1.34, “DROP TRIGGER ...
https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html
For example, use these lines in the server option file: [mysqld] default_authentication_plugin=mysql_native_password That setting enables pre-8.0 clients to connect to 8.0 servers until such time as the clients and connectors in use at your ...
https://dev.mysql.com/doc/refman/8.0/en/binary-log.html
The number increases each time the server creates a new log file, thus creating an ordered series of files. The server creates a new file in the series each time any of the following events occurs: The server is started or restarted The server ...
https://dev.mysql.com/doc/refman/8.0/en/bug-reports.html
Writing a good bug report takes patience, but doing it right the first time saves time both for us and for yourself. This section helps you write your report correctly so that you do not waste your time doing things that may not help us much or at ... Before posting a bug report about a problem, please try to verify that it is a bug and that it has not been reported already: Start by searching the MySQL online manual at ...