clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add a new SETTING during INSERT INTO ... to disable triggering dependent Materialized Views
- FINAL across Paritions fails to remove duplicates
- Allow to attach-detach iceberg local tables
- Extension of CREATE TABLE IF NOT EXISTS ... AS SELECT
- Add EMAIL SAN support for tls authentication
- High Disk I/O and latency on nodes with read_rows = 0 (0 selected parts) during distributed query
- Parallelize the processing of non joined rows for ParallelHashJoin
- Newly created empty instance of ClickHouse uses 300+% CPU
- Okapi BM25
- CTE with SELECT * prevents subcolumns pruning
- Docs
- C++ not yet supported