classPlanParser

order.id < order_detail.order_id order_detail.order_id > order.id order.id - order_shipping.order_id order.(shop_id, no) < order_detail.(shop_id, order_no) order.id < [order_detail.order_id, shipment.order_id] order_detail.order_id >? order.id

Relations are separated by a comma or a newline. A plan naming a single table and no relation is just that table name, so every table name is already a valid plan.