clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- ATTACH VIEW command fails on parameterised view
- Parameterized view with table identifier as a parameter not working
- MaterializedPostgreSQL connection breaks on column changes in postgres after restart
- Error MergeTreeBackgroundExecutor: Exception while executing background task {}: Code: 241. DB::Exception: Memory limit (total) exceeded: would use 3.60 GiB (attempt to allocate chunk of 4361024 bytes), maximum: 3.60 GiB. OvercommitTracker decision: Memory overcommit isn't used. Waiting time or overcommit denominator are set to zero. (MEMORY_LIMIT_EXCEEDED)
- count group by get an unexpect result
- [ClickHouse-66074] Implement SYSTEM LOAD PRIMARY KEY and related unit tests
- Utilizing a Shared Parsing Pool for Multiple Parquet Streams
- MULTIPLE_EXPRESSIONS_FOR_ALIAS for ALIAS column with an expression with distributed queries
- Integrate `polygonToCells`
- How to request the clickhouse-odbc-bridge via HTTP protocol
- Docs
- C++ not yet supported