INNER JOIN current_relation_members crm ON crm.id=cr.id
INNER JOIN current_nodes cn ON crm.member_id=cn.id AND crm.member_type='Node'
WHERE #{OSM.sql_for_area(bbox, 'cn.')}
INNER JOIN current_relation_members crm ON crm.id=cr.id
INNER JOIN current_nodes cn ON crm.member_id=cn.id AND crm.member_type='Node'
WHERE #{OSM.sql_for_area(bbox, 'cn.')}