STEquals (geometry Data Type)
SQL Server 2012
Returns 1 if a geometry instance represents the same point set as another geometry instance. Returns 0 if it does not.
The following example creates two geometry instances with STGeomFromText() that are equal but not trivially equal, and uses STEquals() to test their equality.
DECLARE @g geometry
DECLARE @h geometry;
SET @g = geometry::STGeomFromText('LINESTRING(0 2, 2 0, 4 2)', 0);
SET @h = geometry::STGeomFromText('MULTILINESTRING((4 2, 2 0), (0 2, 2 0))', 0);
SELECT @g.STEquals(@h);