clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix accurate casts from an unsigned integer to IPv4 and IPv6
- Deliver one sorted run per stream reading object storage in order
- Collect SQL stacktraces on the hung-check and server-died abort paths
- Validate the Log family column name length at DDL time
- Check query cancellation inside the row loop of formatQuery and friends
- Docs: document large single-replica services
- Fix `RENAME TABLE` checking the new name against the source database
- Validate the projection name length at DDL time
- Direct join (default join_algorithm) over a FLAT-layout dictionary returns attribute values of the wrong keys once the probe block exceeds ~1024 rows
- Constant projection + ORDER BY ALL + LIMIT n BY + LIMIT WITH TIES: exception 10 "Not found column 1_UInt8 in block" at default settings
- Docs
- C++ not yet supported