26.4.3.45 The user_summary_by_statement_latency and x$user_summary_by_statement_latency Views

These views summarize overall statement statistics, grouped by user. By default, rows are sorted by descending total latency.

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.
total

The total number of statements for the user.
total_latency

The total wait time of timed statements for the user.
max_latency

The maximum single wait time of timed statements for the user.
lock_latency

The total time waiting for locks by timed statements for the user.
rows_sent

The total number of rows returned by statements for the user.
rows_examined

The total number of rows read from storage engines by statements for the user.
rows_affected

The total number of rows affected by statements for the user.
full_scans

The total number of full table scans by statements for the user.