STIntersects (geography Data Type)

**APPLIES TO:** SQL Server (starting with 2012) Azure SQL Database Azure SQL Data Warehouse Parallel Data Warehouse

Returns 1 if a geography instance intersects another geography instance. Returns 0 if it does not.

Syntax

  
.STIntersects ( other_geography )  

Arguments

other_geography
Is another geography instance to compare to the instance on which STIntersects() is invoked.

Return Types

SQL Server return type: bit

CLR return type: SqlBoolean

Remarks

This method always returns NULL if the spatial reference IDs (SRIDs) of the geography instances do not match.

Examples

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'  
END;

See Also

OGC Methods on Geography Instances