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ClickHouse® is a real-time analytics DBMS
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Azat Khuzhin 190ce217bb Disable GROUP BY statistics for optimize_aggregation_in_order 
This statistics significantly decrease performance of
optimize_aggregation_in_order with a prefix key.

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
2022-04-29 06:58:27 +03:00
.github git, cmake, and python are already installed in ubuntu-latest runner 2022-04-25 17:29:31 -04:00
base Merge branch 'master' into speed-up-build 2022-04-22 04:34:27 +00:00
benchmark Apply black formatter to all *.py files in the repo 2022-03-22 17:39:58 +01:00
cmake Merge remote-tracking branch 'origin/master' into clang-tidy-cleanup 2022-04-26 09:42:47 +02:00
contrib Better error message from NuRaft in case of CRC mismatch (#36746) 2022-04-28 17:19:28 +02:00
docker Make backward compatible integration tests runner 2022-04-25 21:16:02 +02:00
docs Merge pull request #36740 from Ryado/patch-1 2022-04-29 05:44:11 +03:00
packages Fix strange whitespace (or I do not know YAML) 2022-04-24 22:38:59 +02:00
programs Merge pull request #36733 from ClickHouse/maven-clickhouse 2022-04-29 00:12:53 +03:00
src Disable GROUP BY statistics for optimize_aggregation_in_order 2022-04-29 06:58:27 +03:00
tests Implement partial GROUP BY key for optimize_aggregation_in_order 2022-04-29 06:58:07 +03:00
utils fix: utils/clickhouse-diagnostics/requirements.txt to reduce vulnerabilities 2022-04-28 02:30:08 +00:00
website Merge pull request #36628 from qoega/versions-history 2022-04-26 09:22:14 +03:00
.clang-format add BeforeLambdaBody to .clang-format 2022-02-11 16:51:45 +01:00
.clang-tidy Merge pull request #36444 from rschu1ze/clang-tidy-fixes 2022-04-21 16:11:27 +02:00
.editorconfig Changed tabs to spaces in editor configs and in style guide [#CLICKHOUSE-3]. 2017-04-01 11:35:09 +03:00
.gitattributes mark test data as binary 2022-01-22 03:19:47 +03:00
.gitignore Add cmake page back to docs && fix /settings/settings in /zh 2022-04-24 16:47:19 -06:00
.gitmodules Moved submodules from ClickHouse-Extras to ClickHouse 2022-03-12 02:11:07 +01:00
.pylintrc Add pylintrc config 2021-01-26 23:35:56 +03:00
.vimrc Changed tabs to spaces in editor configs and in style guide [#CLICKHOUSE-3]. 2017-04-01 11:35:09 +03:00
.yamllint Drop truthy.check-keys from yamllint (does not supported on CI) 2021-02-21 06:15:36 +03:00
AUTHORS Update AUTHORS 2021-09-22 11:38:03 +03:00
CHANGELOG.md Preparation 2022-04-22 03:34:57 +02:00
CMakeLists.txt Merge remote-tracking branch 'origin/master' into clang-tidy-cleanup 2022-04-26 09:42:47 +02:00
CODE_OF_CONDUCT.md Add minimal code of conduct #9676 2020-03-16 12:44:28 +03:00
CONTRIBUTING.md Mention ClickHouse CLA in CONTRIBUTING.md (#32697) 2021-12-14 03:47:19 +03:00
format_sources allow several <graphite> targets (#603) 2017-03-21 23:08:09 +04:00
LICENSE Update year 2022-01-27 01:01:27 +03:00
PreLoad.cmake Hermetic shared build 2021-12-20 16:59:42 +08:00
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SECURITY.md Update SECURITY.md (#35375) 2022-03-18 00:35:03 +03:00

README.md

ClickHouse — open source distributed column-oriented DBMS

ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time.

Useful Links

  • Official website has a quick high-level overview of ClickHouse on the main page.
  • Tutorial shows how to set up and query a small ClickHouse cluster.
  • Documentation provides more in-depth information.
  • YouTube channel has a lot of content about ClickHouse in video format.
  • Slack and Telegram allow chatting with ClickHouse users in real-time.
  • Blog contains various ClickHouse-related articles, as well as announcements and reports about events.
  • Code Browser (Woboq) with syntax highlight and navigation.
  • Code Browser (github.dev) with syntax highlight, powered by github.dev.
  • Contacts can help to get your questions answered if there are any.