clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix(Geo): geohashDecode accepting invalid characters
- Add BPE tokenization with tokenizeBPE and detokenizeBPE
- Analyzer conflates constants that print identically but differ in bits: NaNs with different payloads collapse into one column
- Fix exclusive `S3Queue` path after restart in `Replicated` database
- Fixes #119378
- Fix(Analyzer): uniq-to-count rewrite with duplicate arguments
- Can Clickhouse on Iceberg leverage the multi-stage distributed query execution instead of ReadFromCluster
- ILIKE SOME 20x slower than OR
- countIfOrNull over Nullable counts NULL rows for non-0/1 condition bytes
- valid_before_epoch checks whole minutes, not whole N minutes, for N-minute intervals
- Docs
- C++ not yet supported