STDisjoint (geography Data Type)

APPLIES TO: yesSQL Server (starting with 2008) yesAzure SQL Database noAzure SQL Data Warehouse noParallel Data Warehouse

Returns 1 if a geography instance is spatially disjoint from another geography instance. Returns 0 if it is not.


.STDisjoint ( other_geography )  


Is another geography instance to compare against the instance on which STDisjoint() is invoked.

Return Types

SQL Server return type: bit

CLR return type: SqlBoolean


Two geography instances are disjoint if the intersection of their point sets is empty.

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


The following example uses STDisjoint() to test two geography instances to see if they are spatially disjoint.

DECLARE @g geography;  
DECLARE @h geography;  
SET @g = geography::STGeomFromText('LINESTRING(-122.360 47.656, -122.343 47.656)', 4326);  
SET @h = geography::STGeomFromText('POINT(-122.34900 47.65100)', 4326);  
SELECT @g.STDisjoint(@h);  

See Also

OGC Methods on Geography Instances