clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Distributed table with cityHash64(vin) incorrectly skips the shard when optimize_skip_unused_shards is enabled
- Hard and soft limit settings for access entities
- Follow up work for top-K query processing (PR #89835)
- WIP: Projection Index Text
- SQL interface for creating clusters
- where query get outdated version data after prewhere query
- allow_reorder_prewhere_conditions=1 reorders PREWHERE to evaluate JSON predicate first causing slow queries
- Timezone for iceberg timestamptz
- BOM option to s3 insertion
- Restrict query complexity by query plan estimation
- Docs
- C++ not yet supported