clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Received signal 6 (internal) (STID: 3563-49ac)
- Logical error: Arguments of 'A' have incorrect data types: 'B' of type 'C', 'D' of type 'E (STID: 2735-50e2)
- Arrow/ArrowStream return defaults instead of data for flattened Tuple subcolumn reads when `allow_experimental_nullable_tuple_type` is enabled
- SIGSEGV: data race on `AsynchronousBoundedReadBuffer::prefetch_future` (ParquetV3 prefetcher)
- Speed up toStartOfInterval for SECOND/MINUTE/HOUR intervals
- Avoid server abort on type mismatch during partial result evaluation
- Reset adopted part level to 0 on ATTACH PART/PARTITION for non-Ordinary engines
- Fix `remote_url_allow_hosts` checking the wrong port for MySQL dictionary replicas that inherit the top-level `PORT`
- Fail Iceberg writes when the parent snapshot is missing from `snapshots`
- Support query parameters as user/role name in most contexts
- Docs
- C++ not yet supported