clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix bugs in parseSize() and parseTime() for combined rotate strategy
- Index using aliases does not work in new versions
- Add virtual $name sub-column for Avro union type discrimination
- Flaky test: 04060_transaction_snapshot_visibility
- Flaky test: 04057_transaction_version_metadata_lifecycle
- Implementing `CREATE TABLE` for DeltaLake engine
- Compare rows instead of marks to select correct projection when using different index_granularity settings
- Fix IS DISTINCT FROM for Array and Map compared to NULL
- `validateVariadicArgumentsImpl` reports wrong argument ordinal in error messages due to double-counting `argument_offset`
- Iceberg writes do not populate value_counts in per-file stats, limiting file-level pruning
- Docs
- C++ not yet supported