SELECT IF ( `isnull` ( `performance_schema` . `events_waits_summary_by_user_by_event_name` . `USER` ) , ? , `performance_schema` . `events_waits_summary_by_user_by_event_name` . `USER` ) AS `user` , `performance_schema` . `events_waits_summary_by_user_by_event_name` . `EVENT_NAME` AS `event` , `performance_schema` . `events_waits_summary_by_user_by_event_name` . `COUNT_STAR` AS `total` , `performance_schema` . `events_waits_summary_by_user_by_event_name` . `SUM_TIMER_WAIT` AS `total_latency` , `performance_schema` . `events_waits_summary_by_user_by_event_name` . `AVG_TIMER_WAIT` AS `avg_latency` , `performance_schema` . `events_waits_summary_by_user_by_event_name` . `MAX_TIMER_WAIT` AS `max_latency` FROM `performance_schema` . `events_waits_summary_by_user_by_event_name` WHERE ( ( `performance_schema` . `events_waits_summary_by_user_by_event_name` . `EVENT_NAME` != ? ) AND ( `performance_schema` . `events_waits_summary_by_user_by_event_name` . `USER` IS NOT NULL ) AND ( `performance_schema` . 