clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Vectorize `least`/`greatest` for Nullable and 3+ numeric arguments, and `clamp` for numeric arguments
- SIGSEGV in removeNullable via FunctionArrayMapped::getReturnTypeImpl when a lambda is passed as a non-lambda argument of a higher-order function (STID: 1719-3ae5)
- [DRAFT] Remove CatBoost integration
- CI: reduce stateless/integration test setup overhead (baked stateful datasets, DinD image preseed)
- Run as user on fiddle.clickhouse.com
- Throw cancellation in `ReadBuffer::next`
- Throw cancellation in `WriteBuffer::next`
- Implement SESSION window frame for window functions (experimental)
- ATTACH of a foreign level>0 duplicate-key part into a non-Ordinary MergeTree preserves the level, so FINAL silently returns duplicates
- Enable fractional RANGE OFFSET for Decimal ORDER BY columns
- Docs
- C++ not yet supported