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ClickHouse® is a real-time analytics DBMS
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2c20e6da6c
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Robert Schulze 2c20e6da6c
Fix ubsan issue in function sqid 
Found by fuzzing.

The code called PodArray::insert with begin/end iterators of an empty
std::vector. As per the C++ standard, both iterators are required to be
equal but their exact value is undefined. In this case, they were
both nullptr. PodArray::insert does a sanity check in debug builds
(assertNotIntersects) which dereferences the iterators and ubsan
complained. Somehow, normal builds didn't care.

```
2024.09.27 10:41:01.876670 [ 499435 ] {2b0db728-cd74-485c-b3da-50a93b865e3e} <Debug> executeQuery: (from 127.0.0.1:57580) SELECT sqidDecode('1') (stage: Complete)
/data/ch4/contrib/llvm-project/libcxx/include/__iterator/wrap_iter.h:88:16: runtime error: reference binding to null pointer of type 'unsigned long'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /data/ch4/contrib/llvm-project/libcxx/include/__iterator/wrap_iter.h:88:16
2024.09.27 10:41:01.878689 [ 499430 ] {} <Trace> BaseDaemon: Received signal -3
2024.09.27 10:41:01.878865 [ 501426 ] {} <Fatal> BaseDaemon: ########## Short fault info ############
2024.09.27 10:41:01.878910 [ 501426 ] {} <Fatal> BaseDaemon: (version 24.10.1.1, build id: 757279B158121DAACDCEC840ED67D32C8D35F085, git hash: ad2ee0fdf7, architecture: x86_64) (from thread 499435) Received signal -3
2024.09.27 10:41:01.878934 [ 501426 ] {} <Fatal> BaseDaemon: Signal description: sanitizer trap
2024.09.27 10:41:01.878948 [ 501426 ] {} <Fatal> BaseDaemon: Sanitizer trap.
2024.09.27 10:41:01.878984 [ 501426 ] {} <Fatal> BaseDaemon: Stack trace: 0x000055557bb14cf7 0x000055557bf90d9d 0x00005555705f36da 0x00005555705fd0f3 0x000055557946bc94 0x000055557946ba78 0x0000555579469ed4 0x00005555706107e6 0x0000555571a15a39 0x00005555855723e3 0x0000555585571a73 0x00005555855722ec 0x000055558557410d 0x000055558557599f 0x00005555871774ea 0x00005555871478d3 0x0000555587146540 0x000055558719028c 0x000055558713afaf 0x0000555587138379 0x0000555587137bec 0x00005 55587cb3a69 0x000055558827a191 0x0000555588276d4a 0x000055558827c4e0 0x000055558827bce5 0x000055558819e4ae 0x00005555887ba230 0x00005555887b42be 0x000055558ad5b38d 0x000055558ad8e473 0x000055558f3cac58 0x000055558f3cbb2f 0x000055558f329f57 0x000055558f324fb0 0x00007ffff7c9ca94 0x00007ffff7d29c3c
2024.09.27 10:41:01.879005 [ 501426 ] {} <Fatal> BaseDaemon: ########################################
2024.09.27 10:41:01.879141 [ 501426 ] {} <Fatal> BaseDaemon: (version 24.10.1.1, build id: 757279B158121DAACDCEC840ED67D32C8D35F085, git hash: ad2ee0fdf7) (from thread 499435) (query_id: 2b0db728-cd74-485c-b3da-50a93b865e3e) (query: SELECT sqidDecode('1')) Received signal sanitizer trap (-3)
2024.09.27 10:41:01.879196 [ 501426 ] {} <Fatal> BaseDaemon: Sanitizer trap.
2024.09.27 10:41:01.879241 [ 501426 ] {} <Fatal> BaseDaemon: Stack trace: 0x000055557bb14cf7 0x000055557bf90d9d 0x00005555705f36da 0x00005555705fd0f3 0x000055557946bc94 0x000055557946ba78 0x0000555579469ed4 0x00005555706107e6 0x0000555571a15a39 0x00005555855723e3 0x0000555585571a73 0x00005555855722ec 0x000055558557410d 0x000055558557599f 0x00005555871774ea 0x00005555871478d3 0x0000555587146540 0x000055558719028c 0x000055558713afaf 0x0000555587138379 0x0000555587137bec 0x00005 55587cb3a69 0x000055558827a191 0x0000555588276d4a 0x000055558827c4e0 0x000055558827bce5 0x000055558819e4ae 0x00005555887ba230 0x00005555887b42be 0x000055558ad5b38d 0x000055558ad8e473 0x000055558f3cac58 0x000055558f3cbb2f 0x000055558f329f57 0x000055558f324fb0 0x00007ffff7c9ca94 0x00007ffff7d29c3c
2024.09.27 10:41:01.907697 [ 501426 ] {} <Fatal> BaseDaemon: 0. /data/ch4/src/Common/StackTrace.cpp:380: StackTrace::tryCapture() @ 0x00000000265c0cf7
2024.09.27 10:41:01.936515 [ 501426 ] {} <Fatal> BaseDaemon: 1.0. inlined from /data/ch4/src/Common/StackTrace.h:48: StackTrace
2024.09.27 10:41:01.936597 [ 501426 ] {} <Fatal> BaseDaemon: 1. /data/ch4/src/Common/SignalHandlers.cpp:186: sanitizerDeathCallback() @ 0x0000000026a3cd9d
2024.09.27 10:41:02.105934 [ 501426 ] {} <Fatal> BaseDaemon: 2. __sanitizer::Die() @ 0x000000001b09f6da
2024.09.27 10:41:02.208036 [ 501426 ] {} <Fatal> BaseDaemon: 3. ? @ 0x000000001b0a90f3
2024.09.27 10:41:02.261839 [ 501426 ] {} <Fatal> BaseDaemon: 4.0. inlined from /data/ch4/contrib/llvm-project/libcxx/include/__iterator/wrap_iter.h:88: std::__wrap_iter<unsigned long*>::operator*[abi:v15007]() const
2024.09.27 10:41:02.261930 [ 501426 ] {} <Fatal> BaseDaemon: 4. /data/ch4/src/Common/PODArray.h:303: void DB::PODArrayBase<8ul, 4096ul, Allocator<false, false>, 63ul, 64ul>::assertNotIntersects<std::__wrap_iter<unsigned long*>, std::__wrap_iter<unsigned long*>>(std::__wrap_iter<unsigned long*>, std::__wrap_iter<unsigned long*>) @ 0x0000000023f17c94
2024.09.27 10:41:02.313293 [ 501426 ] {} <Fatal> BaseDaemon: 5. /data/ch4/src/Common/PODArray.h:466: void DB::PODArray<unsigned long, 4096ul, Allocator<false, false>, 63ul, 64ul>::insertPrepare<std::__wrap_iter<unsigned long*>, std::__wrap_iter<unsigned long*>>(std::__wrap_iter<unsigned long*>, std::__wrap_iter<unsigned long*>) @ 0x0000000023f17a78
2024.09.27 10:41:02.364260 [ 501426 ] {} <Fatal> BaseDaemon: 6.0. inlined from /data/ch4/src/Common/PODArray.h:476: void DB::PODArray<unsigned long, 4096ul, Allocator<false, false>, 63ul, 64ul>::insert<std::__wrap_iter<unsigned long*>, std::__wrap_iter<unsigned long*>>(std::__wrap_iter<unsigned long*>, std::__wrap_iter<unsigned long*>)
2024.09.27 10:41:02.364360 [ 501426 ] {} <Fatal> BaseDaemon: 6. /data/ch4/src/Functions/sqid.cpp:126: DB::FunctionSqidDecode::executeImpl(std::vector<DB::ColumnWithTypeAndName, std::allocator<DB::ColumnWithTypeAndName>> const&, std::shared_ptr<DB::IDataType const> const&, unsigned long) const @ 0x0000000023f15ed4
2024.09.27 10:41:02.387295 [ 501426 ] {} <Fatal> BaseDaemon: 7. /data/ch4/src/Functions/IFunction.h:448: DB::IFunction::executeImplDryRun(std::vector<DB::ColumnWithTypeAndName, std::allocator<DB::ColumnWithTypeAndName>> const&, std::shared_ptr<DB::IDataType const> const&, unsigned long) const @ 0x000000001b0bc7e6
2024.09.27 10:41:02.654555 [ 501426 ] {} <Fatal> BaseDaemon: 8. /data/ch4/src/Functions/IFunctionAdaptors.h:28: DB::FunctionToExecutableFunctionAdaptor::executeDryRunImpl(std::vector<DB::ColumnWithTypeAndName, std::allocator<DB::ColumnWithTypeAndName>> const&, std::shared_ptr<DB::IDataType const> const&, unsigned long) const @ 0x000000001c4c1a39
2024.09.27 10:41:02.681873 [ 501426 ] {} <Fatal> BaseDaemon: 9. /data/ch4/src/Functions/IFunction.cpp:245: DB::IExecutableFunction::executeWithoutLowCardinalityColumns(std::vector<DB::ColumnWithTypeAndName, std::allocator<DB::ColumnWithTypeAndName>> const&, std::shared_ptr<DB::IDataType const> const&, unsigned long, bool) const @ 0x000000003001e3e3
2024.09.27 10:41:02.708670 [ 501426 ] {} <Fatal> BaseDaemon: 10. /data/ch4/src/Functions/IFunction.cpp:159: DB::IExecutableFunction::defaultImplementationForConstantArguments(std::vector<DB::ColumnWithTypeAndName, std::allocator<DB::ColumnWithTypeAndName>> const&, std::shared_ptr<DB::IDataType const> const&, unsigned long, bool) const @ 0x000000003001da73
2024.09.27 10:41:02.736491 [ 501426 ] {} <Fatal> BaseDaemon: 11. /data/ch4/src/Functions/IFunction.cpp:237: DB::IExecutableFunction::executeWithoutLowCardinalityColumns(std::vector<DB::ColumnWithTypeAndName, std::allocator<DB::ColumnWithTypeAndName>> const&, std::shared_ptr<DB::IDataType const> const&, unsigned long, bool) const @ 0x000000003001e2ec
2024.09.27 10:41:02.766547 [ 501426 ] {} <Fatal> BaseDaemon: 12. /data/ch4/src/Functions/IFunction.cpp:303: DB::IExecutableFunction::executeWithoutSparseColumns(std::vector<DB::ColumnWithTypeAndName, std::allocator<DB::ColumnWithTypeAndName>> const&, std::shared_ptr<DB::IDataType const> const&, unsigned long, bool) const @ 0x000000003002010d
2024.09.27 10:41:02.797091 [ 501426 ] {} <Fatal> BaseDaemon: 13. /data/ch4/src/Functions/IFunction.cpp:380: DB::IExecutableFunction::execute(std::vector<DB::ColumnWithTypeAndName, std::allocator<DB::ColumnWithTypeAndName>> const&, std::shared_ptr<DB::IDataType const> const&, unsigned long, bool) const @ 0x000000003002199f
2024.09.27 10:41:02.936897 [ 501426 ] {} <Fatal> BaseDaemon: 14. /data/ch4/src/Analyzer/Resolve/QueryAnalyzer.cpp:3476: DB::QueryAnalyzer::resolveFunction(std::shared_ptr<DB::IQueryTreeNode>&, DB::IdentifierResolveScope&) @ 0x0000000031c234ea
2024.09.27 10:41:03.089695 [ 501426 ] {} <Fatal> BaseDaemon: 15. /data/ch4/src/Analyzer/Resolve/QueryAnalyzer.cpp:3776: DB::QueryAnalyzer::resolveExpressionNode(std::shared_ptr<DB::IQueryTreeNode>&, DB::IdentifierResolveScope&, bool, bool, bool) @ 0x0000000031bf38d3
2024.09.27 10:41:03.247469 [ 501426 ] {} <Fatal> BaseDaemon: 16. /data/ch4/src/Analyzer/Resolve/QueryAnalyzer.cpp:3934: DB::QueryAnalyzer::resolveExpressionNodeList(std::shared_ptr<DB::IQueryTreeNode>&, DB::IdentifierResolveScope&, bool, bool) @ 0x0000000031bf2540
2024.09.27 10:41:03.417889 [ 501426 ] {} <Fatal> BaseDaemon: 17. /data/ch4/src/Analyzer/Resolve/QueryAnalyzer.cpp:4182: DB::QueryAnalyzer::resolveProjectionExpressionNodeList(std::shared_ptr<DB::IQueryTreeNode>&, DB::IdentifierResolveScope&) @ 0x0000000031c3c28c
2024.09.27 10:41:03.584072 [ 501426 ] {} <Fatal> BaseDaemon: 18. /data/ch4/src/Analyzer/Resolve/QueryAnalyzer.cpp:5443: DB::QueryAnalyzer::resolveQuery(std::shared_ptr<DB::IQueryTreeNode> const&, DB::IdentifierResolveScope&) @ 0x0000000031be6faf
2024.09.27 10:41:03.742102 [ 501426 ] {} <Fatal> BaseDaemon: 19. /data/ch4/src/Analyzer/Resolve/QueryAnalyzer.cpp:168: DB::QueryAnalyzer::resolve(std::shared_ptr<DB::IQueryTreeNode>&, std::shared_ptr<DB::IQueryTreeNode> const&, std::shared_ptr<DB::Context const>) @ 0x0000000031be4379
2024.09.27 10:41:03.750689 [ 501426 ] {} <Fatal> BaseDaemon: 20. /data/ch4/src/Analyzer/Resolve/QueryAnalysisPass.cpp:18: DB::QueryAnalysisPass::run(std::shared_ptr<DB::IQueryTreeNode>&, std::shared_ptr<DB::Context const>) @ 0x0000000031be3bec
2024.09.27 10:41:03.789792 [ 501426 ] {} <Fatal> BaseDaemon: 21. /data/ch4/src/Analyzer/QueryTreePassManager.cpp:185: DB::QueryTreePassManager::run(std::shared_ptr<DB::IQueryTreeNode>) @ 0x000000003275fa69
2024.09.27 10:41:03.841618 [ 501426 ] {} <Fatal> BaseDaemon: 22. /data/ch4/src/Interpreters/InterpreterSelectQueryAnalyzer.cpp:142: DB::(anonymous namespace)::buildQueryTreeAndRunPasses(std::shared_ptr<DB::IAST> const&, DB::SelectQueryOptions const&, std::shared_ptr<DB::Context const> const&, std::shared_ptr<DB::IStorage> const&) @ 0x0000000032d26191
2024.09.27 10:41:03.886106 [ 501426 ] {} <Fatal> BaseDaemon: 23. /data/ch4/src/Interpreters/InterpreterSelectQueryAnalyzer.cpp:160: DB::InterpreterSelectQueryAnalyzer::InterpreterSelectQueryAnalyzer(std::shared_ptr<DB::IAST> const&, std::shared_ptr<DB::Context const> const&, DB::SelectQueryOptions const&, std::vector<String, std::allocator<String>> const&) @ 0x0000000032d22d4a
2024.09.27 10:41:03.939316 [ 501426 ] {} <Fatal> BaseDaemon: 24. /data/ch4/contrib/llvm-project/libcxx/include/__memory/unique_ptr.h:714: std::__unique_if<DB::InterpreterSelectQueryAnalyzer>::__unique_single std::make_unique[abi:v15007]<DB::InterpreterSelectQueryAnalyzer, std::shared_ptr<DB::IAST>&, std::shared_ptr<DB::Context> const&, DB::SelectQueryOptions const&>(std::shared_ptr<DB::IAST>&, std::shared_ptr<DB::Context> const&, DB::SelectQueryOptions const&) @ 0x0000000032d 284e0
2024.09.27 10:41:03.991694 [ 501426 ] {} <Fatal> BaseDaemon: 25.0. inlined from /data/ch4/src/Interpreters/InterpreterSelectQueryAnalyzer.cpp:270: operator()
2024.09.27 10:41:03.991783 [ 501426 ] {} <Fatal> BaseDaemon: 25.1. inlined from /data/ch4/contrib/llvm-project/libcxx/include/__functional/invoke.h:394: ?
2024.09.27 10:41:03.991846 [ 501426 ] {} <Fatal> BaseDaemon: 25.2. inlined from /data/ch4/contrib/llvm-project/libcxx/include/__functional/invoke.h:470: ?
2024.09.27 10:41:03.991893 [ 501426 ] {} <Fatal> BaseDaemon: 25.3. inlined from /data/ch4/contrib/llvm-project/libcxx/include/__functional/function.h:235: ?
2024.09.27 10:41:03.991939 [ 501426 ] {} <Fatal> BaseDaemon: 25. /data/ch4/contrib/llvm-project/libcxx/include/__functional/function.h:716: ? @ 0x0000000032d27ce5
2024.09.27 10:41:04.014613 [ 501426 ] {} <Fatal> BaseDaemon: 26.0. inlined from /data/ch4/contrib/llvm-project/libcxx/include/__functional/function.h:848: ?
2024.09.27 10:41:04.014702 [ 501426 ] {} <Fatal> BaseDaemon: 26.1. inlined from /data/ch4/contrib/llvm-project/libcxx/include/__functional/function.h:1197: ?
2024.09.27 10:41:04.014765 [ 501426 ] {} <Fatal> BaseDaemon: 26. /data/ch4/src/Interpreters/InterpreterFactory.cpp:362: DB::InterpreterFactory::get(std::shared_ptr<DB::IAST>&, std::shared_ptr<DB::Context>, DB::SelectQueryOptions const&) @ 0x0000000032c4a4ae
2024.09.27 10:41:04.115761 [ 501426 ] {} <Fatal> BaseDaemon: 27. /data/ch4/src/Interpreters/executeQuery.cpp:1243: DB::executeQueryImpl(char const*, char const*, std::shared_ptr<DB::Context>, DB::QueryFlags, DB::QueryProcessingStage::Enum, DB::ReadBuffer*) @ 0x0000000033266230
2024.09.27 10:41:04.227492 [ 501426 ] {} <Fatal> BaseDaemon: 28. /data/ch4/src/Interpreters/executeQuery.cpp:1474: DB::executeQuery(String const&, std::shared_ptr<DB::Context>, DB::QueryFlags, DB::QueryProcessingStage::Enum) @ 0x00000000332602be
2024.09.27 10:41:04.308275 [ 501426 ] {} <Fatal> BaseDaemon: 29. /data/ch4/src/Server/TCPHandler.cpp:587: DB::TCPHandler::runImpl() @ 0x000000003580738d
2024.09.27 10:41:04.424278 [ 501426 ] {} <Fatal> BaseDaemon: 30. /data/ch4/src/Server/TCPHandler.cpp:2520: DB::TCPHandler::run() @ 0x000000003583a473
2024.09.27 10:41:04.436610 [ 501426 ] {} <Fatal> BaseDaemon: 31. /data/ch4/base/poco/Net/src/TCPServerConnection.cpp:43: Poco::Net::TCPServerConnection::start() @ 0x0000000039e76c58
2024.09.27 10:41:04.450910 [ 501426 ] {} <Fatal> BaseDaemon: 32. /data/ch4/base/poco/Net/src/TCPServerDispatcher.cpp:115: Poco::Net::TCPServerDispatcher::run() @ 0x0000000039e77b2f
2024.09.27 10:41:04.466158 [ 501426 ] {} <Fatal> BaseDaemon: 33. /data/ch4/base/poco/Foundation/src/ThreadPool.cpp:205: Poco::PooledThread::run() @ 0x0000000039dd5f57
2024.09.27 10:41:04.481766 [ 501426 ] {} <Fatal> BaseDaemon: 34. /data/ch4/base/poco/Foundation/src/Thread_POSIX.cpp:335: Poco::ThreadImpl::runnableEntry(void*) @ 0x0000000039dd0fb0
2024.09.27 10:41:04.481850 [ 501426 ] {} <Fatal> BaseDaemon: 35. ? @ 0x00007ffff7c9ca94
2024.09.27 10:41:04.481904 [ 501426 ] {} <Fatal> BaseDaemon: 36. ? @ 0x00007ffff7d29c3c
2024.09.27 10:41:04.481952 [ 501426 ] {} <Fatal> BaseDaemon: Integrity check of the executable skipped because the reference checksum could not be read.
2024.09.27 10:41:04.482182 [ 501426 ] {} <Fatal> BaseDaemon: No settings were changed
```
2024-09-27 13:02:29 +00:00
.github Merge steps together to minimize grouping 2024-09-13 17:35:09 +02:00
base Revert "Revert "Merge pull request #63279 from allmazz/mongodb_refactoring"" 2024-09-23 07:06:58 +00:00
benchmark
cmake Remove dbms dependency on clickhouse_functions 2024-09-24 19:48:23 +02:00
contrib fix configure in contrib/mongo-c-driver-cmake/CMakeLists.txt 2024-09-25 12:12:36 +00:00
docker Merge pull request #69033 from filimonov/patch-11 2024-09-25 15:12:52 +00:00
docs Revert "JSONCompactWithProgress query output format" 2024-09-26 09:47:08 +02:00
packages Merge pull request #60650 from peter279k/improve_init_script 2024-05-29 11:36:00 +00:00
programs Remove dbms dependency on clickhouse_functions 2024-09-24 19:48:23 +02:00
rust Do not clear terminal after skim suggestions 2024-05-02 10:02:06 +02:00
src Fix ubsan issue in function sqid 2024-09-27 13:02:29 +00:00
tests Fix ubsan issue in function sqid 2024-09-27 13:02:29 +00:00
utils Revert "JSONCompactWithProgress query output format" 2024-09-26 09:47:08 +02:00
.clang-format Stop clang-format trying to remove branches in for loops 2024-05-06 20:58:22 +02:00
.clang-tidy Allow to run clang-tidy with clang-19 2024-07-17 02:08:37 +02:00
.clangd Enable few slow clang-tidy checks for clangd 2023-05-13 14:08:25 +02:00
.editorconfig Do not remove trailing space in *.reference test files (by modern IDEs) by adding it to .editorconfig 2024-06-05 22:55:59 +02:00
.exrc Fix vim settings (wrong group for autocmd) 2022-12-03 21:23:24 +01:00
.git-blame-ignore-revs Add one more revision to ignore 2024-07-14 20:57:02 +02:00
.gitattributes avoid conflicts in SettingsChangesHistory 2024-07-03 15:25:12 +02:00
.gitignore xray: add global xray instrumentation support 2024-05-29 17:33:21 +03:00
.gitmodules Revert "Revert "Merge pull request #63279 from allmazz/mongodb_refactoring"" 2024-09-23 07:06:58 +00:00
.snyk Add exclusions from the Snyk scan 2022-10-31 17:47:02 +01:00
.yamllint move Check Descriptions to commit_status_helper 2024-08-05 13:18:37 +02:00
AUTHORS Update AUTHORS 2021-09-22 11:38:03 +03:00
CHANGELOG.md Update CHANGELOG.md 2024-09-26 09:45:55 +02:00
CITATION.cff Add CITATION.cff 2024-09-06 15:33:53 +00:00
CMakeLists.txt Merge pull request #68267 from azat/build/COMMAND_ERROR_IS_FATAL 2024-08-20 11:55:20 +00:00
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 License 2024-01-01 15:54:00 +01:00
PreLoad.cmake Avoid ignoring errors of execute_process() (set COMMAND_ERROR_IS_FATAL=ANY) 2024-08-13 10:35:54 +02:00
pyproject.toml add automerge prs step 2024-08-01 21:18:14 +02:00
README.md Update README.md 2024-09-26 17:22:37 +08:00
SECURITY.md Update version_date.tsv and changelogs after v24.8.1.2684-lts 2024-08-21 14:27:49 +00:00

README.md

Website Apache 2.0 License

The ClickHouse company logo.

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

How To Install (Linux, macOS, FreeBSD)

curl https://clickhouse.com/ | sh

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 (github.dev) with syntax highlighting, powered by github.dev.
  • Contacts can help to get your questions answered if there are any.

Monthly Release & Community Call

Every month we get together with the community (users, contributors, customers, those interested in learning more about ClickHouse) to discuss what is coming in the latest release. If you are interested in sharing what you've built on ClickHouse, let us know.

Upcoming Events

Keep an eye out for upcoming meetups and events around the world. Somewhere else you want us to be? Please feel free to reach out to tyler <at> clickhouse <dot> com. You can also peruse ClickHouse Events for a list of all upcoming trainings, meetups, speaking engagements, etc.

Upcoming meetups

Recently completed meetups

Recent Recordings

  • Recent Meetup Videos: Meetup Playlist Whenever possible recordings of the ClickHouse Community Meetups are edited and presented as individual talks. Current featuring "Modern SQL in 2023", "Fast, Concurrent, and Consistent Asynchronous INSERTS in ClickHouse", and "Full-Text Indices: Design and Experiments"
  • Recording available: v24.8 LTS Release Call All the features of 24.8 LTS, one convenient video! Watch it now!

Interested in joining ClickHouse and making it your full-time job?

We are a globally diverse and distributed team, united behind a common goal of creating industry-leading, real-time analytics. Here, you will have an opportunity to solve some of the most cutting-edge technical challenges and have direct ownership of your work and vision. If you are a contributor by nature, a thinker and a doer - we’ll definitely click!

Check out our current openings here: https://clickhouse.com/company/careers

Can't find what you are looking for, but want to let us know you are interested in joining ClickHouse? Email careers@clickhouse.com!