clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- DB::Exception: Not found column _block_number in block.
- [RFC] Improvement of EXPLAIN PLAN and addition of EXPLAIN ANALYZE
- Functions to support A5 spatial index
- `file` and similar engines should provide virtual columns with row numbers
- external rocksdb
- Lazy load of table function tables
- Implement `ALTER TABLE ... DROP PARTITION ...` for Iceberg
- No data in the filled column after applying a function when using the WITH FILL clause
- Non-nullable column in CoalescingMergeTree
- Evaluate using Row-Major Storage instead of RowRef/RowRefList in Hash Table
- Docs
- C++ not yet supported