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.