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ClickHouse® is a real-time analytics DBMS
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Azat Khuzhin c9c590071d Add ability to disable deduplication for BACKUP 
Right now BACKUP omit similar files, and will not allow to use this
backup as a regular table, and usually those similar files are quite
small (i.e. columns.txt).

So by using `BACKUP TO S3() deduplicate_files=0` you will be possible to
use `ATTACH TABLE` directly from S3.

P.S. right now it is possible only for the table with one part, since,
usually, there is nothing to deduplicate (if the columns are different).

v2: Add deduplicate_files into metadata
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
2022-12-27 15:56:06 +01:00
.github Merge pull request #44399 from ClickHouse/checkout-action 2022-12-27 14:15:22 +01:00
base Use already written part of the query for fuzzy search (pass to skim) 2022-12-26 14:52:38 +01:00
benchmark Remove old file 2022-07-12 20:28:02 +02:00
cmake Merge pull request #44122 from azat/build/toolchain-quirks 2022-12-16 10:22:52 +01:00
contrib Merge pull request #44569 from ClickHouse/stack-traces-debug-build 2022-12-27 14:31:35 +03:00
docker Merge pull request #44282 from nickitat/set_mem_limit_for_fuzz_tests 2022-12-27 16:05:26 +03:00
docs Update external-dicts-dict-sources.md 2022-12-26 16:21:36 -04:00
packages Merge pull request #43597 from ClickHouse/sd_notify_followup_fixes 2022-12-17 04:35:05 +03:00
programs Merge pull request #44570 from ClickHouse/clickhouse-benchmark-better-arguments 2022-12-27 16:10:21 +03:00
rust Merge pull request #44623 from azat/build/rust-fix 2022-12-27 17:10:33 +03:00
src Add ability to disable deduplication for BACKUP 2022-12-27 15:56:06 +01:00
tests Add ability to disable deduplication for BACKUP 2022-12-27 15:56:06 +01:00
utils Merge pull request #44386 from ClickHouse/check-submodules 2022-12-19 17:51:56 +01:00
website move-images-to-clickhouse-presentations 2022-08-10 04:04:56 +02:00
.clang-format add BeforeLambdaBody to .clang-format 2022-02-11 16:51:45 +01:00
.clang-tidy Temporarily disable misc-* due to being too slow 2022-12-07 11:43:47 +00:00
.editorconfig Changed tabs to spaces in editor configs and in style guide [#CLICKHOUSE-3]. 2017-04-01 11:35:09 +03:00
.exrc Fix vim settings (wrong group for autocmd) 2022-12-03 21:23:24 +01:00
.git-blame-ignore-revs Add files with revision to ignore for git blame 2022-09-13 23:05:56 +02:00
.gitattributes Ignore core.autocrlf for tests references 2022-10-05 09:13:27 +02:00
.gitignore Integrate skim into the client/local 2022-12-14 20:57:41 +01:00
.gitmodules Clean stale submodule 2022-12-19 17:36:04 +01:00
.pylintrc Cover deprecated bad-* pylint options with black 2022-06-08 14:18:28 +02:00
.snyk Add exclusions from the Snyk scan 2022-10-31 17:47:02 +01:00
.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 Update CHANGELOG.md 2022-12-20 20:56:40 +03:00
CMakeLists.txt Fix extremely slow stack traces in debug build 2022-12-24 20:31:04 +01:00
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 Update PreLoad.cmake 2022-08-26 18:30:05 +08:00
README.md Update README.md 2022-12-21 02:16:35 +03:00
SECURITY.md Update version_date.tsv and changelogs after v22.12.1.1752-stable 2022-12-15 17:07:16 +00:00

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.
  • ClickHouse Cloud ClickHouse as a service, built by the creators and maintainers.
  • 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.

Upcoming events

  • Recording available: v22.12 Release Webinar 22.12 is the ClickHouse Christmas release. There are plenty of gifts (a new JOIN algorithm among them) and we adopted something from MongoDB. Original creator, co-founder, and CTO of ClickHouse Alexey Milovidov will walk us through the highlights of the release.
  • ClickHouse Meetup at the CHEQ office in Tel Aviv - Jan 16 - We are very excited to be holding our next in-person ClickHouse meetup at the CHEQ office in Tel Aviv! Hear from CHEQ, ServiceNow and Contentsquare, as well as a deep dive presentation from ClickHouse CTO Alexey Milovidov. Join us for a fun evening of talks, food and discussion!
  • ClickHouse Meetup at Microsoft Office in Seattle - Jan 18 - Keep an eye on this space as we will be announcing speakers soon!