clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
Triage Issues!
When you volunteer to triage issues, you'll receive an email each day with a link to an open issue that needs help in this project. You'll also receive instructions on how to triage issues.
Triage Docs!
Receive a documented method or class from your favorite GitHub repos in your inbox every day. If you're really pro, receive undocumented methods or classes and supercharge your commit history.
C++ not yet supported66 Subscribers
Add a CodeTriage badge to clickhouse
Help out
- Issues
- Speed up aggregate sums over decimals
- Fix DeltaLake stats pruning with non-nullable Date cast of a Nullable column
- Copying `filter` of `String` and numeric `Array` columns: an exact reserve from the offsets and one `memcpy` per run of kept rows make it up to 3x faster when 7/8 of the rows pass (ClickBench Q28 10-12% faster with the columns cache)
- Count a single `uniqExact` in order and choose the aggregation order after projections
- gRPC: the fatal error callback can block the signal listener thread forever when the client does not read
- Fix a lost wakeup in the Delta Lake data file iterator
- Do not use parallel replicas for the change data feed of a Delta Lake table function
- Retry an Iceberg commit only when its metadata version is taken
- Improve merging of low cardinality `GROUP BY` with Adaptive Aggregator
- Sync the named collections encryption key interface from the private repository
- Docs
- C++ not yet supported