https://www.red-gate.com/simple-talk/databases/sql-server/t-sql-programming-sql-server/sql-server-spatial-indexes/
Spatial Data in SQL Server has special indexing because it has to perform specialised functions. It is able, for example, to break down an indexed space into a...
sql serverspatial indexessimple talk
https://carto.com/solutions/spatial-indexes
See how spatial indexes (H3, quadbin) can save data science professionals & analysts time when carrying out geospatial analysis at scale.
spatial indexescarto