26.4.3.46 The user_summary_by_statement_type and x$user_summary_by_statement_type Views

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:

• user

  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.

• statement

  The final component of the statement event name.

• total

  The total number of occurrences of the statement event for the user.

• total_latency

  The total wait time of timed occurrences of the statement event for the user.

• max_latency

  The maximum single wait time of timed occurrences of the statement event for the user.

• lock_latency

  The total time waiting for locks by timed occurrences of the statement event for the user.

• rows_sent

  The total number of rows returned by occurrences of the statement event for the user.

• rows_examined

  The total number of rows read from storage engines by occurrences of the statement event for the user.

• rows_affected

  The total number of rows affected by occurrences of the statement event for the user.

• full_scans

  The total number of full table scans by occurrences of the statement event for the user.