clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Support the window frame exclusion
- Resolve pushed role names once per query instead of per shard connection
- `netloc` drops the host and port of a bracketed IPv6 authority: `user:pass@[2001:db8::1]:8080` yields `user:pass@`, and a bracketed host without userinfo yields an empty string
- Fix equals behavior with FixedStrings in containers
- Simplify/speed up string comparisons in arrayIndex functions
- `numericIndexedVectorPointwiseDivide`/`Multiply`: a result that rounds to zero silently drops the index from the vector instead of storing an explicit 0
- Decimal source skips DateTime64/Time64 saturation: out-of-range ticks stored
- age() off by one: ns overflow flips the sub-unit adjustment past 2262-04-11
- `icebergTruncate` writes a spec-wrong partition value for negative integers — filtered reads silently return 0 rows for existing rows
- toRelativeHourNum is non-monotonic at the Unix epoch for DateTime64 but reports is_always_monotonic — partition pruning and PK analysis silently drop rows
- Docs
- C++ not yet supported