clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Improve `sccache` to reuse S3 artifacts as cold read-only cache
- make_distributed_plan: how should we handle replica part divergence when scheduling read buckets?
- Speed up `-ForEach` over arrays of `Nullable` values
- Join the time ranges table with `ANY` in the `TimeSeries` selector
- Expand groups with the literals around them in PromQL regex matchers
- MySQL dictionary source: accept `socket` only in the configuration file, connect over TCP for DDL dictionaries
- Merges load the statistics of every column from `statistics.packed` with one request per column
- Docs: h3GetResolution incorrectly says invalid indexes return a random value
- Iceberg INSERT doesn't cut data files at `iceberg_insert_max_bytes_in_data_file` when Parquet encodes in parallel (regression from #127670)
- Fix loading a table whose `TTL ... WHERE` has an `IN` subquery after a table read behind the subquery is dropped
- Docs
- C++ not yet supported