STEquals (geography Data Type)

THIS TOPIC APPLIES TO: yesSQL Server (starting with 2012)noAzure SQL DatabasenoAzure SQL Data Warehouse noParallel Data Warehouse

Returns 1 if a geography instance represents the same point set as another geography instance. Returns 0 if it does not.

Syntax


.STEquals ( other_geography )  

Arguments

other_geography
Is another geography instance to compare against the instance on which STEquals() 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 creates two geography instances with STGeomFromText() that are equal but not trivially equal, and uses STEquals() to test their equality. The instances are equal because LINESTRING and POINT are contained within the POLYGON.

DECLARE @g geography;  
DECLARE @h geography;  
SET @g = geography::STGeomFromText('GEOMETRYCOLLECTION(POLYGON((-122.368 47.658, -122.338 47.649, -122.338 47.658, -122.368 47.658, -122.368 47.658)), LINESTRING(-122.360 47.656, -122.343 47.656), POINT (-122.35 47.656))', 4326);  
SET @h = geography::STGeomFromText('POLYGON((-122.368 47.658, -122.338 47.649, -122.338 47.658, -122.368 47.658, -122.368 47.658))', 4326);  
SELECT @g.STEquals(@h);  

See Also

OGC Methods on Geography Instances