clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix ORDER BY WITH FILL emitting generated rows before a NULLS FIRST NULL
- Do not report a server that rejects every query as a possible deadlock
- Fix potential data loss during Keeper cross-disk moves
- Provide `_table` and `_database` virtual columns to mutations
- Fix the global memory tracker getting pinned at the previous peak after a one-shot correction to resident memory
- Docs: Add sqlflow integration page (data ingestion, community)
- WASM UDF: a module that does not export its linear memory as `memory` is accepted and fails only on first call
- Use the primary index for tuple key for comparisons like ORDER BY (a, (b, c))
- Add --dump-schema option to clickhouse-client and clickhouse-local
- Parallelize keyed uniqExact state merges by destination
- Docs
- C++ not yet supported