clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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Help out
- Issues
- Fix Arrow export of JSON, Dynamic, QBit and AggregateFunction
- Hand the connection to the built-in web UI pages over `postMessage`
- Enforce allow_non_metadata_alters on the mutation path, and document what it blocks
- Read all summed columns for SELECT FINAL from SummingMergeTree
- allow_non_metadata_alters=0 does not block many mutation-triggering ALTERs and its documentation is unclear
- Answer text-index materialization from the index read task
- Fix gRPC and Arrow Flight listeners for wildcard listen hosts
- Keep the crash-report channel of clickhouse-local reachable
- Look up the SSH key and support ssh-agent in clickhouse-client
- Support ReadInOrder in distributed plan
- Docs
- C++ not yet supported