clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Correlated subqueries cannot handle null-safe comparisons correctly
- Speed up consistency check during loading of tables with lots of files inside data parts.
- FPC Codec does not persist float_size in table metadata
- 03633_set_index_bulk_filtering is flaky
- Unexpected `DB::Exception: User memory limit exceeded` for distributed queries with multiple users.
- Read only db created with backup engine has cross dependencies with the original dB if created on same server.
- S3 object count and size keeps on increasing when using S3 as storage volume
- Feature Request: Make to*OrNull functions support non-String arguments (use accurateCastOrNull internally)
- HTTPDictionarySource should respect max_http_get_redirects setting
- REPLACE PARTITION silently fails when one of the partition keys is of type Bool
- Docs
- C++ not yet supported