clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- `INSERT SELECT` with implicit `GROUP BY` by destination partition key
- Clickhouse-manticoresearch integration
- If the 'PARTITION BY' field is defined, the data cannot be deleted when using the 'delete on cluster where id in (select...)' statement.
- How to assign a surrogate key to an existing table？
- Iceberg Logical error: Invalid number of columns in chunk
- FINAL query on a single-part ReplacingMergeTree table
- Add support for expression parameters when call querying a parametrized view
- If multiple roles attached to the same user have the same setting override, during connection CH will apply setting from random role
- Test `test_trace_log_memory_context` is flaky
- VIEW WITH DEFINER -> Distributed -> MergeTree does not propagate correct user (propagate initial user instead of definer user for shards)
- Docs
- C++ not yet supported