clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Bound the collections read from the Native protocol
- Disable tcache inside ScopedJemallocThreadArena by default
- Use min/max stats for raw parquet `INT64` columns read as `DateTime`
- Do not require SHOW COLUMNS to read a table through cluster() or remote()
- Prefer a base-table read that satisfies the whole ORDER BY over a narrower projection
- Make `SET <setting> = DEFAULT` respect an active `compatibility` setting
- Fix wrong results when a Date column is converted to DateTime outside the 32-bit seconds range
- Fix dangling remote host filter references in S3 client configurations
- Fix `Not-ready Set` when a one-block system table filters on an `IN` subquery
- Do not overflow the stack when traversing a deep query tree
- Docs
- C++ not yet supported