clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix a hang of `remote()` queries with `async_socket_for_remote = 0` in a CPU workload
- Do not carry the source columns of computed join keys into the join when runtime filters are enabled
- Reject `Log` and `TinyLog` tables whose column streams share a file name
- Fix Delta Lake `WHERE` on a `binary` column with the engine predicate
- Refuse REPLACE PARTITION from a source partition that only holds 0-row parts
- Fix a column and a same-named alias sharing one result name with `prefer_column_name_to_alias`
- Push expressions of String columns below window functions in the query plan
- Bound the HNSW construction parameters of the vector similarity index
- Keep the predicate of `indexHint` in a serialized query plan
- Budget-aware cost for CPU lease requests, so parking does not extend a slot
- Docs
- C++ not yet supported