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27.4.3.46 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.


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Document created the 26/06/2006, last modified the 26/10/2018
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