clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Backport #103037 to 26.3: Support `ALIAS` columns in text index direct read optimization
- input_format_try_infer_integers doesn't work with JSON datatype
- Add MergeTree vector_spann (SPANN) index
- Narrow main-table mark ranges using projection index bitmap
- `accurateCastOrNull` Array→QBit returns `[0]` instead of NULL when element conversion is inaccurate
- Wrong `previous_value` in SettingsChangesHistory for `query_plan_max_limit_for_lazy_materialization` in version 25.12
- `deserializeFromValue` single-arg path uses `deserializeTextCSV` on already-extracted value, causing silent truncation at comma for String types
- issue-76473: Add engine_file_skip_failed_files setting to skip corrupted files in File engine
- `WHERE` on join key isn't pushed into left-side primary key index for `RIGHT` / `FULL JOIN`
- Expanding Substrait serializer support and test coverage
- Docs
- C++ not yet supported