clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- obfuscate does not preserve IPv6 magnitude, byte order ignored
- Merge fills never-written `Nested` subcolumn with `[]`; rows TTL deletes rows
- SYSTEM STOP TTL MERGES ignored when a column is stored by no part
- Paimon DECIMAL(19..38) partition: negative values decoded as positive
- Docs: Kafka TLS and named collections
- Analyzer / Optimizer: missing empty-result folding on disjoint INTERSECT branches and unreferenced LEFT JOIN pruning inside EXISTS
- Arrow output writes DateTime as uint32
- 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>
- Docs
- C++ not yet supported