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STArea (geometry Data Type)

Returns the total surface area of a geometry instance.


.STArea ( )

SQL Server return type: float

CLR return type: SqlDouble

STArea() returns 0 if a geometry instance contains only 0- and 1-dimensional figures, or if it is empty.

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();
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