sys Schema Views • user • statement • total • total_latency • max_latency • lock_latency • rows_sent • rows_examined • rows_affected • full_scans 28.4.3.47 The version View These views summarize informaion about statements executed, grouped by user and statement type. By default, rows are sorted by user and descending total latency. The  user_summary_by_statement_type  and  x$user_summary_by_statement_type  views have these columns: The client user name. Rows for which the  USER  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 . The final component of the statement event name. The total number of occurrences of the statement event for the user. The total wait time of timed occurrences of the statement event for the user. The maximum single wait time of timed occurrences of the statement event for the user. The total time waiting for locks by timed occurrences of the statement event for the user. The total number of rows returned by occurrences of the statement event for the user. The total number of rows read from storage engines by occurrences of the statement event for the user. The total number of rows affected by occurrences of the statement event for the user. The total number of full table scans by occurrences of the statement event for the user. This view provides the current  sys  schema and MySQL server versions. As of MySQL 8.0.18, this view is deprecated; expect it to be removed in a future version of MySQL. Affected applications should be adjusted to use an alternative instead. For example, use the  VERSION()  function to retrieve the MySQL server version. Note 5179