Calculates the cartesian distance between two geometric objects. The distance between two geometric objects is the distance between the closer points or segments between both objects.
 

1 geo.distanceCartesian

<geo.distanceCartesian
    ora_tol='ora_tol'
    ora_unit='M|KM|CM|MM|MILE|NAUT_MILE|FOOT|INCH|SQ_KM...'
>
    <geom1> *
        <geom1 /> *
    </geom1>
    <geom2> *
        <geom1 /> *
    </geom2>
</geo.distanceCartesian>
Example
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<select>
    <columns>
        <geo.distanceCartesian ora_tol='0.004' ora_unit='KM'>
             <geom1>a.the_geom</geom1>
             <geom2>a.the_geom</geom2>
        </geo.distanceCartesian>
    </columns>
    <from table='points' alias='a' >
        <join table='points' alias='b'>
        </join>
    </from>
    <where>
        a.id = 134 AND b.id = 24356
    </where>
</select>