clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Enumerating time zones leads to accumulation of 2.9 GB of RAM.
- Proper parsing of decimal timestamps for DateTime64
- Add experimental Iguana compression codec (draft; default=Iguana for perf testing)
- Add trino checks into spark tests
- Require SELECT access on columns read by UPDATE/DELETE mutations (WHERE and SET)
- Optimise AggregateFunctionSumMap functions family
- Optimize GROUP BY ... ORDER BY min/max aggregate LIMIT K: mode 1
- Hybrid SQL-standard short-name fallback for subquery columns
- Build error on enabling NO_ARMV81_OR_HIGHER on Huawei Kunpeng 920 server
- Add FastPFOR codec for text index posting lists
- Docs
- C++ not yet supported