clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- vector_search_use_quantized_codes reads codes plus the full column for every row once the table has a patch part (more bytes than a plain scan)
- Pin the stress readiness probe to the native port and capture stacks when it gives up
- Perf(Parquet): Speed up array offset reconstruction
- Fix `Not-ready Set` logical error from an `IN` subquery inside a `map*` or `arrayFold` lambda
- Do not flatten JSON arrayElement chains across typed path prefixes
- Compute the day of week and the time of day arithmetically
- Bound Compact reads by the requested columns
- Fix(MergeTree): mergeTreePartInfo for numeric detached partitions
- INNER JOIN equality evaluates `t2.c0 LIKE t2.c0` on the other table and throws on a non-joining `\` row
- Do not constant-fold a lambda that captures an IN set which is not built yet
- Docs
- C++ not yet supported