clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- UInt64 curve guard ignores Nullable: `Nullable(UInt64)` args still prune rows
- OPTIMIZE TABLE deletes metadata/version-hint.text, leaving the table unreadable
- OPTIMIZE TABLE roots compaction at the metadata pointer: newer snapshots lost
- SYSTEM WAIT VIEW returns Ok. while a requested refresh is still pending on another replica
- Fix `AsynchronousInsertQueueSize` and `AsynchronousInsertQueueBytes` drift
- Stream row_number with its default frame
- Support per-column compression codecs in projections
- Bound column count in inserted RowBinary header
- Fix wrong results in largestTriangleThreeBuckets for DateTime64 values near the type's upper bound
- Refuse a `Set` table on the right side of `IN` when a row policy applies to it
- Docs
- C++ not yet supported