clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- `ATTACH PART` of a patch part drops its version from the name: a merge records a version above it and the update is lost
- View that reads a session temporary table by bare name breaks after restart on 26.10
- Hash-based deduplication leads to wrong distinct counts on JSON values
- A view column declared DateTime('UTC') over a DateTime column is returned in the session's time zone, while toTypeName says UTC
- INSERT VALUES silently replaces nested array with default when a negative number is inserted into an unsigned type; other formats throw
- Docs: fix h3GetResolution documentation on invalid input behavior
- Text index: speed up the pfor posting list codec
- Iceberg `OPTIMIZE TABLE` aborts the server with `LOGICAL_ERROR` ("partition arity mismatch: 0 partition columns but 1 values") after a `DELETE` empties an identity partition
- Fix unbounded JIT memory growth with distinct literals
- Rewrite INTERSECT ALL and EXCEPT ALL to JOIN
- Docs
- C++ not yet supported