mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-19 06:01:57 +00:00
67c2e50331
* 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 * Lost blank lines * Add new logo sizes * update presentations * Next step in migrating to new documentation * Fix all warnings in en reference * Fix all warnings in ru reference * Re-arrange existing reference * Move operation tips to main reference * Fix typos noticed by milovidov@ * Get rid of zookeeper.md * Looks like duplicate of tutorial.html * Fix some mess with html tags in tutorial * No idea why nobody noticed this before, but it was completely not clear whet to get the data * Match code block styling between main and tutorial pages (in favor of the latter) * Get rid of some copypaste in tutorial * Normalize header styles * Move example_datasets to sphinx * Move presentations submodule to website * Move and update README.md * No point in duplicating articles from habrahabr here * Move development-related docs as is for now * doc/reference/ -> docs/ (to match the URL on website) * Adapt links to match the previous commit * Adapt development docs to rst (still lacks translation and strikethrough support) * clean on release * blacklist presentations in gulp * strikethrough support in sphinx * just copy development folder for now * fix weird introduction in style article * Style guide translation (WIP) * Finish style guide translation to English * gulp clean separately * Update year in LICENSE * Initial CONTRIBUTING.md * Fix remaining links to old docs in tutorial * Some tutorial fixes * Typo * Another typo * Update list of authors from yandex-team accoding to git log
39 lines
2.1 KiB
ReStructuredText
39 lines
2.1 KiB
ReStructuredText
Rounding functions
|
|
------------------
|
|
|
|
floor(x[, N])
|
|
~~~~~~~~~~~~~
|
|
Returns a rounder number that is less than or equal to 'x'.
|
|
A round number is a multiple of 1 / 10N, or the nearest number of the appropriate data type ``if 1 / 10N`` isn't exact.
|
|
'N' is an integer constant, optional parameter. By default it is zero, which means to round to an integer.
|
|
'N' may be negative.
|
|
|
|
Examples: ``floor(123.45, 1) = 123.4, floor(123.45, -1) = 120``.
|
|
|
|
'x' is any numeric type. The result is a number of the same type.
|
|
For integer arguments, it makes sense to round with a negative 'N' value (for non-negative 'N', the function doesn't do anything).
|
|
If rounding causes overflow (for example, ``floor(-128, -1))``, an implementation-specific result is returned.
|
|
|
|
ceil(x[, N])
|
|
~~~~~~~~~~~~
|
|
Returns the smallest round number that is greater than or equal to 'x'. In every other way, it is the same as the 'floor' function (see above)..
|
|
|
|
round(x[, N])
|
|
~~~~~~~~~~~~~
|
|
Returns the round number nearest to 'num', which may be less than, greater than, or equal to 'x'.
|
|
If 'x' is exactly in the middle between the nearest round numbers, one of them is returned (implementation-specific).
|
|
The number '-0.' may or may not be considered round (implementation-specific).
|
|
In every other way, this function is the same as 'floor' and 'ceil' described above.
|
|
|
|
roundToExp2(num)
|
|
~~~~~~~~~~~~~~~~
|
|
Accepts a number. If the number is less than one, it returns 0. Otherwise, it rounds the number down to the nearest (whole non-negative) degree of two.
|
|
|
|
roundDuration(num)
|
|
~~~~~~~~~~~~~~~~~~
|
|
Accepts a number. If the number is less than one, it returns 0. Otherwise, it rounds the number down to numbers from the set: 1, 10, 30, 60, 120, 180, 240, 300, 600, 1200, 1800, 3600, 7200, 18000, 36000. This function is specific to Yandex.Metrica and used for implementing the report on session length.
|
|
|
|
roundAge(num)
|
|
~~~~~~~~~~~~~
|
|
Accepts a number. If the number is less than 18, it returns 0. Otherwise, it rounds the number down to numbers from the set: 18, 25, 35, 45, 55. This function is specific to Yandex.Metrica and used for implementing the report on user age.
|