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@param [String] column_name to search
@param [GeographicItem] geographic_item_id or array of geographic_item_ids to be tested.
@return [Scope] of GeographicItems

If this scope is given an Array of GeographicItems as a second parameter,
it will return the 'OR' of each of the objects against the table.
SELECT COUNT(*) FROM "geographic_items"
       WHERE (ST_Contains(polygon::geometry, GeomFromEWKT('srid=4326;POINT (0.0 0.0 0.0)'))
              OR ST_Contains(polygon::geometry, GeomFromEWKT('srid=4326;POINT (-9.8 5.0 0.0)')))
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