clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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Help out
- Issues
- Fix cluster discovery re-registration after Keeper session expiry
- Wrong results: partition pruning with intDiv/divide by a negative constant drops rows for range predicates
- Fix SummingMergeTree FINAL dropping rows when column pruning hides non-zero summing columns
- Fix wrong results for tables sorted by a monotonically decreasing function
- FileCache metrics improvement
- Share OpenSSL LSan suppressions with the unit test binary
- Wrong results: SummingMergeTree FINAL drops a present row when reading only a summation column that is 0 for it (read-in-order + column pruning)
- Add non-allocating column hash/scatter primitives for batched sharding in query execution
- Generate deterministic names for runtime filters
- Add LOCALTIME and LOCALTIMESTAMP as aliases for now()
- Docs
- C++ not yet supported