clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Problem with inner double-quotes JSON in Array(String)
- Add support of non-equi joins for non-inner joins
- Support skip_non_cache_locality_shards in query in cluster mod with filesystem_cache
- NOT_FOUND_COLUMN_IN_BLOCK with optimize_injective_functions_in_group_by disabled
- Array join on ProfileEvents changed behaviour in new analyzer
- Should ALTER CLEAR be also forbidden for SummingMergeTree columns to sum?
- GRANT on columns should work with wildcards
- FR: an ability to control server-wide parallelism of s3queue retrieval+processing
- RL or MAB tuning of query settings (based on statistics per normalized_query_hash)
- max_threads_for_leaf setting
- Docs
- C++ not yet supported