clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- ProfileEvent for how many granules were read by LazyMaterialization
- Add support for temporary session-scoped functions and CTE-defined functions (UDF)
- Rollup TTL that modifies the partition key breaks indexing/partitioning
- comparing result of polygonAreaCartesian() to zero sometimes produces incorrect boolean result
- `system.query_log` should record if the query used skip indexes
- using secret in remote_servers
- Query Optimization Not Working Properly DateTime With date_trunc, toStartOfInterval + Timezone
- Bad join error with parallel replicas and custom_key_sampling mode
- clickhouse-local should set interserver host/port in context
- How to get user's expiration date?
- Docs
- C++ not yet supported