STIntersects (geography Data Type)
Applies To: SQL Server 2014, SQL Server 2016 Preview
Returns 1 if a geography instance intersects another geography instance. Returns 0 if it does not.
Applies to: SQL Server (SQL Server 2012 through current version), Azure SQL Database.
Is another geography instance to compare to 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 geography instances do not match.
The following example uses STIntersects() to determine whether two geography instances intersect each other.
DECLARE @g geography; DECLARE @h geography; SET @g = geography::STGeomFromText('POLYGON((-122.358 47.653, -122.348 47.649, -122.348 47.658, -122.358 47.658, -122.358 47.653))', 4326); SET @h = geography::STGeomFromText('LINESTRING(-122.360 47.656, -122.343 47.656)', 4326);
SELECT CASE @g.STIntersects(@h)
WHEN 1 THEN '@g intersects @h'
ELSE '@g does not intersect @h'