clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- `parseOptions` copy-paste error maps TSV format to `ASTCopyQuery::Formats::CSV` at line 146
- `promql_evaluation_time` uses `FloatAuto` (float32) which silently corrupts modern Unix timestamps
- Add S2 projection index and spatial predicate functions
- `IcebergMetadataUpdateMicroseconds` ProfileEvent description is copy-paste of `IcebergIteratorInitializationMicroseconds`
- `column->cut(start_row, num_rhs_rows)` uses left-side row index instead of right-side data offset, corrupting right columns in split blocks
- Add data_compressed_bytes and data_uncompressed_bytes to EXPLAIN ESTIMATE
- Fix AggregateFunction state compatibility with LowCardinality argument types
- Format string arguments `array_depth` and `getName` swapped in `getTupleType` error message
- YAML `stop_grace_period` absorbed into `entrypoint` folded scalar in `mc` service of Iceberg compose files
- `checkProperties` missing `!attach` guard on `allow_part_offset_column_in_projections` check makes table unloadable after DETACH
- Docs
- C++ not yet supported