ClickHouse/docs/en/system_tables/system.parts.rst

system.parts
------------
Contains information about parts of a table in the MergeTree family.

Columns:

.. code-block:: text

  database String            - Name of the database where the table that this part belongs to is located.
  table String               - Name of the table that this part belongs to.
  engine String              - Name of the table engine, without parameters.
  partition String           - Name of the partition, in the format YYYYMM.
  name String                - Name of the part.
  replicated UInt8           - Whether the part belongs to replicated data.
  active UInt8               - Whether the part is used in a table, or is no longer needed and will be deleted soon. Inactive parts remain after merging.
  marks UInt64               - Number of marks - multiply by the index granularity (usually 8192) to get the approximate number of rows in the part.
  bytes UInt64               - Number of bytes when compressed.
  modification_time DateTime - Time the directory with the part was modified. Usually corresponds to the part's creation time.
  remove_time DateTime       - For inactive parts only - the time when the part became inactive.
  refcount UInt32            - The number of places where the part is used. A value greater than 2 indicates that this part participates in queries or merges.
Initial commit if EN docs 2017-04-03 19:49:50 +00:00			`system.parts`
			`------------`
System tables 2017-04-26 17:37:55 +00:00			`Contains information about parts of a table in the MergeTree family.`
Initial commit if EN docs 2017-04-03 19:49:50 +00:00
System tables 2017-04-26 17:37:55 +00:00			`Columns:`
Fixed newlines in .rst files before code blocks [#CLICKHOUSE-2]. for i in $(find . -name '*.rst'); do grep -F -q '.. code-block:: ' $i && cat $i \| sed -r -e 's/$/<NEWLINE>/' \| tr -d '\n' \| sed -r -e 's/([^>])<NEWLINE>.. code-block::/\1<NEWLINE><NEWLINE>.. code-block::/g' \| sed -r -e 's/<NEWLINE>/\n/g' > ${i}.tmp && mv ${i}.tmp ${i}; done 2017-06-13 20:35:07 +00:00
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			`database String - Name of the database where the table that this part belongs to is located.`
			`table String - Name of the table that this part belongs to.`
			`engine String - Name of the table engine, without parameters.`
			`partition String - Name of the partition, in the format YYYYMM.`
			`name String - Name of the part.`
			`replicated UInt8 - Whether the part belongs to replicated data.`
			`active UInt8 - Whether the part is used in a table, or is no longer needed and will be deleted soon. Inactive parts remain after merging.`
			`marks UInt64 - Number of marks - multiply by the index granularity (usually 8192) to get the approximate number of rows in the part.`
			`bytes UInt64 - Number of bytes when compressed.`
			`modification_time DateTime - Time the directory with the part was modified. Usually corresponds to the part's creation time.`
			`remove_time DateTime - For inactive parts only - the time when the part became inactive.`
			`refcount UInt32 - The number of places where the part is used. A value greater than 2 indicates that this part participates in queries or merges.`