clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- RENAME DATABASE can create a self-referential Alias table, denying all unrelated DDL server-wide with INFINITE_LOOP
- Fix wrong results and `CANNOT_READ_ALL_DATA` when reading parts in packed storage
- Expose unconfigured system logs in `system.documentation`
- Iceberg OPTIMIZE: attach position deletes by the same rules as SELECT
- OPTIMIZE MANIFEST refused when snapshot summary omits total-records
- Sorted `LIMIT BY` dedups `-0.0` and `0.0` by comparison while the hash path is bitwise: adding `ORDER BY` silently drops or fabricates rows
- Show the result in `Pretty` formats as soon as it arrives
- __topKFilter dispatch misses Nullable inside Tuple: Nullable(UInt8) prewhere
- `KeyCondition::checkInHyperrectangle` applies the same monotonic chain once per condition atom, recomputing an identical transformed `Range` on every granule
- Fix text-search functions ignoring the text index tokenizer above a JOIN
- Docs
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