clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- lockTemporaryLocksLocked iterates unshuffled original instead of shuffled copy, making shuffle dead code
- object_shared_data_min_bytes_for_advanced_serialization
- CLEAR COLUMN IN PARTITION on SummingMergeTree does not trigger zero-row deletion after OPTIMIZE FINAL (regression since 25.8)
- Fix `IntDivOrNull` returning 0 instead of NULL
- Fix use-after-free in HashJoin::addBlockToJoin with disjunctive ON clause
- Fix possible buffer overflow in ReadHelpers
- Fix incorrect results for RIGHT ANY JOIN
- Logical error: 'current_writer != nullptr'
- Backport #100926 to 25.8: Fix wrong results in JOIN with shard-by-PK and query condition cache
- Wrong disk total space? How to set total space for S3 disks?
- Docs
- C++ not yet supported