clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Advance MaterializedPostgreSQL replication slot on empty batches
- Key the query plan profiling on the numeric step index
- Native macOS build fails with the macOS 27 SDK: DBL_EPSILON undeclared because of libc++'s <float.h>
- RANGE offset frame includes NULL ORDER BY keys outside the numeric range
- Reuse RabbitMQ producer connections and channels across INSERT queries
- Tuple comparison with toDateOrDefault() gives wrong WHERE filtering result (TLP oracle mismatch)
- Preserve `now64(3)` defaults in `s3Cluster` forwarded reads
- Fix missing rows in `EmbeddedRocksDB`, `KeeperMap` and `Redis` key lookups for a `FixedString`, `Variant` or `Dynamic` constant
- Do not correct the global memory tracker on every tick in sanitizer builds
- Fix the TopK query condition cache key collision of `c UInt8` and `cU Int8`, and build the File TopK key with SipHash
- Docs
- C++ not yet supported