clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- DB::NetException: Connection reset by peer
- Need to rebalance data in all the shards
- _granule meta column for sampling
- case insensitive search is not working with tokenbf_v1 on plain string column
- Change the meaning of the returned string of ReadTaskCallback for StorageObjectStorageSource::ReadTaskIterator
- exact_rows_before_limit=0 still sends rows_before_limit_at_least statistic
- Lazy column loading does not work with `if` and CTEs
- Selecting S3 metadata using s3() functions is very slow due to unnecessary reads on data files
- [Umbrella] Enhancements for correlated subqueries support
- MULTIPLE_EXPRESSIONS_FOR_ALIAS alias clash between column name alias and table name alias
- Docs
- C++ not yet supported