คุณช่วยบอกฉันเกี่ยวกับการเตรียมการเดินทางภาคพื้นดินจากสนามบิน DFW ไปยังตัวเมืองดัลลาสิ ไม่จำเป็นต้องใช้ตารางทั้งหมด
could you tell me about ground transportation arrangements from the DFW airport to downtown DALLASIt is not neccessary to use all the tables.
 restriction:  restriction_code [ text]  advance_purchase [ int]  stopovers [ text]  saturday_stay_required [ text]  minimum_stay [ int]  maximum_stay [ int]  application [ text]  no_discounts [ text] 
SELECT DISTINCT ground_service.transport_type FROM airport, airport_service, city AS CITY_0, city AS CITY_1, ground_service WHERE airport.airport_code = airport_service.airport_code AND CITY_0.city_name = 'DALLAS' AND CITY_1.city_code = airport_service.city_code AND CITY_1.city_name = 'DALLAS' AND ground_service.airport_code = airport.airport_code AND ground_service.city_code = CITY_0.city_code