ClickHouse/doc/reference/en/system_tables/system.processes.rst

system.processes
----------------

This system table is used for implementing the ``SHOW PROCESSLIST`` query.
Columns:
.. code-block:: text

  user String              - Name of the user who made the request. For distributed query processing, this is the user who helped the requestor server send the query to this server, not the user who made the distributed request on the requestor server.

  address String           - The IP address the request was made from. The same for distributed processing.

  elapsed Float64          - The time in seconds since request execution started.

  rows_read UInt64         - The number of rows read from the table. For distributed processing, on the requestor server, this is the total for all remote servers.

  bytes_read UInt64        - The number of uncompressed bytes read from the table. For distributed processing, on the requestor server, this is the total for all remote servers.

  total_rows_approx UInt64 - The approximation of the total number of rows that should be read. For distributed processing, on the requestor server, this is the total for all remote servers. It can be updated during request processing, when new sources to process become known.

  memory_usage UInt64      - How much memory the request uses. It might not include some types of dedicated memory.

  query String             - The query text. For INSERT, it doesn't include the data to insert.

  query_id String          - Query ID, if defined.
Initial commit if EN docs 2017-04-03 19:49:50 +00:00			`system.processes`
			`----------------`

System tables 2017-04-26 17:37:55 +00:00			This system table is used for implementing the ``SHOW PROCESSLIST`` query.
			`Columns:`
CLICKHOUSE-2720: progress on website (#865) * update presentations * CLICKHOUSE-2936: redirect from clickhouse.yandex.ru and clickhouse.yandex.com * update submodule * lost files * CLICKHOUSE-2981: prefer sphinx docs over original reference * CLICKHOUSE-2981: docs styles more similar to main website + add flags to switch language links * update presentations * Less confusing directory structure (docs -> doc/reference/) * Minify sphinx docs too * Website release script: fail fast + pass docker hash on deploy * Do not underline links in docs * shorter * cleanup docker images * tune nginx config * CLICKHOUSE-3043: get rid of habrastorage links * Lost translation * CLICKHOUSE-2936: temporary client-side redirect * behaves weird in test * put redirect back * CLICKHOUSE-3047: copy docs txts to public too * move to proper file * remove old pages to avoid confusion * Remove reference redirect warning for now * Refresh README.md * Yellow buttons in docs * Use svg flags instead of unicode ones in docs * fix test website instance * Put flags to separate files * wrong flag * Copy Yandex.Metrica introduction from main page to docs * Yet another home page structure change, couple new blocks (CLICKHOUSE-3045) * Update Contacts section * CLICKHOUSE-2849: more detailed legal information * CLICKHOUSE-2978 preparation - split by files * More changes in Contacts block * Tune texts on index page * update presentations * One more benchmark * Add usage sections to index page, adapted from slides * Get the roadmap started, based on slides from last ClickHouse Meetup * CLICKHOUSE-2977: some rendering tuning * Get rid of excessive section in the end of getting started * Make headers linkable * CLICKHOUSE-2981: links to editing reference - https://github.com/yandex/ClickHouse/issues/849 * CLICKHOUSE-2981: fix mobile styles in docs * Ban crawling of duplicating docs * Open some external links in new tab * Ban old docs too * Lots of trivial fixes in english docs * Lots of trivial fixes in russian docs * Remove getting started copies in markdown * Add Yandex.Webmaster * Fix some sphinx warnings * More warnings fixed in english docs * More sphinx warnings fixed * Add code-block:: text * More code-block:: text * These headers look not that well * Better switch between documentation languages * merge use_case.rst into ya_metrika_task.rst * Edit the agg_functions.rst texts * Add lost empty lines 2017-06-13 04:15:47 +00:00			`.. code-block:: text`

System tables 2017-04-26 17:37:55 +00:00			`user String - Name of the user who made the request. For distributed query processing, this is the user who helped the requestor server send the query to this server, not the user who made the distributed request on the requestor server.`

			`address String - The IP address the request was made from. The same for distributed processing.`

			`elapsed Float64 - The time in seconds since request execution started.`

			`rows_read UInt64 - The number of rows read from the table. For distributed processing, on the requestor server, this is the total for all remote servers.`

			`bytes_read UInt64 - The number of uncompressed bytes read from the table. For distributed processing, on the requestor server, this is the total for all remote servers.`

			`total_rows_approx UInt64 - The approximation of the total number of rows that should be read. For distributed processing, on the requestor server, this is the total for all remote servers. It can be updated during request processing, when new sources to process become known.`

			`memory_usage UInt64 - How much memory the request uses. It might not include some types of dedicated memory.`

			`query String - The query text. For INSERT, it doesn't include the data to insert.`

			`query_id String - Query ID, if defined.`