Spatial SQL

Solve the query in the engine the user has chosen. Read references/spatial-sql.md for the relevant engine and query patterns, and references/formats-and-crs.md when coordinate or format semantics matter.

When the user has dlt, Dagster, dbt, QGIS or Observable in their stack, read references/established-stack.md for ownership and integration boundaries. Preserve their chosen tools; retain source pins, GIS correctness and reproducible evidence. Do not duplicate their SQL, ingestion or scheduler definitions.

Query workflow