clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Can't coalesce Nullable(Decimal) and Float64: no supertype
- Code: 735. DB::Exception: Received 'Cancel' packet from the client, canceling the query.
- INSERT SELECT with UNION ALL and JOIN writes incorrect String values in MergeTree
- Extend "source filter grants" support to additional source types (especially REMOTE)
- CORS header disallows progress updates in HTTP interface
- Remove `ConstStoragePtr` from the `MergeTreeData::SnapshotData`
- MaterializedPostgreSQL drops existing publication when multiple ClickHouse databases use the same Postgres DB
- Logical error: Unexpected return type from A. Expected B. Got C. Action: (STID: 1611-3d19)
- Nested EXISTS with deep correlated reference to outer JOIN table fails with NOT_FOUND_COLUMN_IN_BLOCK
- CPU Slot Over-provisioning in Workload Scheduling
- Docs
- C++ not yet supported