clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Spatial join: a join algorithm for geometric predicates
- `pointInPolygon` should accept `Nullable` coordinates
- Allow `Nullable` geo types (`Nullable(Point)`, `Nullable(Polygon)`, ...)
- Allow `Nullable` keys in `Map`
- Scalar functions to convert between GeoJSON geometry and geo types (`ST_GeomFromGeoJSON`, `ST_AsGeoJSON`)
- `GeoJSON` format: support GeoJSON Lines (GeoJSONSeq), single `Feature` files, and error tolerance
- Option to skip empty and unreadable files when reading a glob
- Buffer function for geometries (`ST_Buffer`)
- Support Z/M dimensions in WKB/WKT input
- `CAST` from nested arrays to geo types, and between geo types (`Polygon` -> `MultiPolygon`)
- Docs
- C++ not yet supported