clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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Help out
- Issues
- Add `splitByRegexp` tokenizer for text indexes
- Support arrayElement and arraySlice for QBit
- Integrate XGboost on ClickHouse
- accurateCastOrDefault to JSON ignores json_type_escape_dots_in_keys, splitting dotted keys
- Fix propagation of settings in `accurateCastOrDefault`
- Add `notHas` function
- Fix data race in shared format init exception rethrow
- Accept fractional unix timestamp for DateTime64 in containers and JSON
- TotalPrimaryKeyBytesInMemoryAllocated metric and the corresponding field in system.tables, system.parts should account for projections' primary key as well
- Storage-policy config reload may claim pre-existing data on newly added disks
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