clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix float-to-Decimal cast truncating instead of rounding
- Add CGroupMemoryInactiveFile async metric for WSS calculation
- Fix DELETE FROM with qualified column names (db.table.column)
- Add per-function call statistics in system.query_log
- Optimize regex with groups/alternation for primary key index
- Fix nested() function stripping LowCardinality from types
- Add max_http_post_redirects setting for URL engine writes
- Add JSONAllPathsWithValues and optimize subscript access
- Add BIP173 (original bech32) support for non-SegWit addresses
- ON CLUSTER CREATE/DROP are slow/failing compared to running them on all hosts manually
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- C++ not yet supported