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MySQL 5.7 Reference Manual  / ...  / MySQL sys Schema  / sys Schema Object Reference  / sys Schema Views  /  The user_summary_by_statement_latency and x$user_summary_by_statement_latency Views

26.4.3.45 The user_summary_by_statement_latency andx$user_summary_by_statement_latency Views

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

Theuser_summary_by_statement_latency andx$user_summary_by_statement_latency views have these columns:

  • user

    The client user name. Rows for which theUSER column in the underlying Performance Schema table isNULL are assumed to be for background threads and are reported with a host name ofbackground.

  • 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.