clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Backport #106476 to 26.4: Fix crash due to OOB when deserializing corrupted Avro data
- Backport #105949 to 26.3: Fix server abort when cancelling postgresql table function queries
- Backport #105579 to 26.3: Fix nullptr deref in CREATE TABLE TO INNER UUID without ENGINE
- Support bf16 in `dotProduct` and optimize the implementation slightly
- Fix text index fallback for failing preprocessor casts
- Metamorphic equivalence violation in HAVING clauses due to buggy partition pruning on NaN values
- Treat float NaN keys as NULL on JOIN ON
- TLP partitioning over a mixed `RIGHT JOIN` + comma join tree can produce rows from an empty result set
- Speed up `DISTINCT` in order, sort-merge joins, `LIMIT BY` and negative `LIMIT BY`
- Native reader and writer for the Arrow and ArrowStream formats
- Docs
- C++ not yet supported