clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- hasAnyTokens/hasAllTokens on Array(String) with a non-splitByNonAlpha text index return wrong results when evaluated row-level (projection or use_skip_indexes = 0)
- Azure SDK Base64Decode global-buffer-overflow on account keys with bytes >= 0x80 (signed-char index of decode table)
- [RFC] Named function arguments
- Wire profiled lock wrappers into FileCache guards to measure contention wait time
- Switch the default compression to ZSTD(3) for table data and network
- Fix LOGICAL_ERROR on duplicate __join_result_dummy when deserializing a distributed join plan
- Detect when tables behind a query have changed
- Add skewPopStable, skewSampStable, kurtPopStable, kurtSampStable aggregate functions
- Fix DateTime64 parser consumes Bool column value when small epoch
- Speed up variance and standard deviation over Decimal columns
- Docs
- C++ not yet supported