clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- A new native parquet reader support filter push down
- Inconsistency in default quoting_character between toString and extractKeyValuePairs
- ASLR build writes randomized address to`trace_log` and `Stack trace:` line during crashes
- full table scan when using Merge() + Distributed() combo
- Format `One` isn't fast
- TTLDelete merge keeps restarting and blocking mutations
- Support years ranging 0001 to 9999 for Date / Expand range to match other DB (e.g Postgres / Redshift)
- Supporting for tombstone in kafka engine
- Mongo queries (wire protocol + dialect)
- [Umbrella] New JSON type improvements
- Docs
- C++ not yet supported