If you are into geo spatial, worth to check on the same class project - SedonaDB https://github.com/apache/sedona-db

"SedonaDB is an open-source single-node analytical database engine with geospatial as a first-class citizen"

Apache License 2.0 https://github.com/apache/sedona-db/blob/main/LICENSE

MIT License https://github.com/duckdb/duckdb/blob/main/LICENSE

https://duckdb.org/docs/current/core_extensions/spatial/func...