Returns the area of a 2D polygon.
 

1 geo.area

<geo.area>
    <geom_column /> *
</geo.area>
Example
Copy
<select>
    <columns>
        <geo.area tol='4326' unit='SQ_KM'>a.the_geom</geo.reverseLine>
    </columns>
    <from table='buildings' alias='a' />
</select>