clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- `optimize_append_index` hint drops non-comparison `OR` alternatives: rows lost
- Constraint graph compares `DateTime` bound and string literal as integers
- `isPossibleCompare` misses `{LESS_OR_EQUAL, GREATER_OR_EQUAL}`: rows dropped
- wasm `ch_parse` throws `RangeError` on nested dictionary literal at 384 KiB
- Freeform rejects wide low-ambiguity rows with search steps exceeded
- Add settings for the first day of the week, the week range and the first week of the year
- `unrecognized_<UUID>` queue dir breaks `Distributed` table load on rollback
- `zookeeper_path=/` yields relative Keeper root; each request expires the session
- `#comment` line silently ends a PromQL script in `clickhouse-client`
- `skipRow` opens a quote at any `"`, not at field start: CSV `count()` drifts
- Docs
- C++ not yet supported