A spatial join links records by location rather than a shared key — for instance, tagging every listing with the neighbourhood polygon that contains it. Spatial joins are powerful but computationally expensive when run at query time.
Neighbourly avoids runtime spatial joins by pre-computing them: each address is denormalized against its full hierarchy, and spatial layers store pre-joined hierarchy id arrays, so lookups stay fast at scale.
Related terms
Spatial Join is part of the Neighbourly data platform. Explore the API or browse the data layers.