STArea (geometry Data Type)
Returns the total surface area of a geometry instance.
Syntax
.STArea ( )
Return Types
SQL Server return type: float
CLR return type: SqlDouble
Remarks
STArea() returns 0 if a geometry instance contains only 0- and 1-dimensional figures, or if it is empty.
Examples
The following example uses STArea() to create a Polygongeometry instance and computes the area of the polygon.
DECLARE @g geometry;
SET @g = geometry::STGeomFromText('POLYGON((0 0, 3 0, 3 3, 0 3, 0 0),(2 2, 2 1, 1 1, 1 2, 2 2))', 0);
SELECT @g.STArea();