clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Report tables and databases in system.query_log for queries answered from the query cache
- Always set a terminal status when a backup or restore fails
- Fix CHECK TABLE reporting healthy parts as broken for JSON columns with long paths
- Enforce per-query and per-user temporary data limits on external sort
- REPLACE/ATTACH PARTITION FROM fails with false 'different secondary indices'/'different ordering' for semantically-equal index type / CAST type names
- LOGICAL_ERROR "ReadFromMergeTree step is expected to be created by readFromParts" in ReadFromMergeTree::deserialize (multistage distributed queries)
- RWLockImpl::getLock re-entrant deadlock in CREATE OR REPLACE internal DROP (STID 2043-3c5c)
- Revert "#110528: Remove stale and redundant `Cloud default value` annotations"
- Logical error: 'Bad cast from type DB::ColumnNullable to DB::ColumnVector<unsigned long>' in scalar subquery over GROUP BY ALL WITH ROLLUP with group_by_use_nulls
- force_optimize_projection_name / force_optimize_projection report an index-only (_part_offset) projection as "not used" although projection filtering does use it
- Docs
- C++ not yet supported