Rechercher dans le manuel MySQL

27.4.3.6 The host_summary_by_statement_type and x$host_summary_by_statement_type Views

These views summarize informaion about statements executed, grouped by host and statement type. By default, rows are sorted by host and descending total latency.

The host_summary_by_statement_type and x$host_summary_by_statement_type views have these columns:

  • host

    The host from which the client connected. Rows for which the HOST 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 host.

  • total_latency

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

  • max_latency

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

  • lock_latency

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

  • rows_sent

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

  • rows_examined

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

  • rows_affected

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

  • full_scans

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


Find a PHP function

Document created the 26/06/2006, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/mysql-rf-sys-host-summary-by-statement-type.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:en Manuel MySQL : https://dev.mysql.com/

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.

Contents Haut