clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Perf: write sampling keys directly to output column
- Resolve the default time zone from an absolute `TZ` path outside `TZDIR`
- Cascades node count still re-read from ambient context; subquery SETTINGS rejected
- Fix skip indexes not used when the analyzer rewrites the filter expression (e.g. for ALIAS columns)
- Remove verbose comments regarding unique key in ReadFromMergeTree
- Fix lost text index optimization for queries with ORDER BY ... LIMIT
- Remove outdated comment in transactionlog
- Update review-and-restore-backups.mdx
- readonly>0 does not restrict SET ROLE
- Do not report "Server died" when the server is stalled but alive
- Docs
- C++ not yet supported