โปรดระบุข้อมูล RENTAL CAR ใน PITTSBURGH ไม่จำเป็นต้องใช้ตารางทั้งหมด
please list the RENTAL CAR information in PITTSBURGHIt is not neccessary to use all the tables.
 city:  city_code [ varchar]  city_name [ varchar]  state_code [ varchar]  country_name [ varchar]  time_zone_code [ varchar] 
SELECT DISTINCT ground_service.transport_type FROM city, ground_service WHERE city.city_name = 'PITTSBURGH' AND ground_service.city_code = city.city_code AND ground_service.transport_type = 'RENTAL CAR'