Returns 1 if a geometry instance intersects another geometry instance. Returns 0 if it does not.
.STIntersects ( other_geometry ) other_geometry
Is another geometry instance to compare against the instance on which STIntersects() is invoked.
SQL Server return type: bit
CLR return type: SqlBoolean
This method always returns null if the spatial reference IDs (SRIDs) of the geometry instances do not match.
The following example uses STIntersects() to determine if two geometry instances intersect each other.
DECLARE @g geometry;
DECLARE @h geometry;
SET @g = geometry::STGeomFromText('LINESTRING(0 2, 2 0, 4 2)', 0);
SET @h = geometry::STGeomFromText('POINT(1 1)', 0);
SELECT @g.STIntersects(@h);