สนามแข่ง Phoenix International มีสนามแข่งกี่ประเภท?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many types of tracks are there on the Phoenix International raceway?It is not neccessary to use all the tables.
 table_25238:  "Rnd" [ real]  "Date" [ text]  "Length" [ text]  "Track" [ text]  "Location" [ text]  "Type" [ text] 
SELECT COUNT("Type") FROM table_25238 WHERE "Track" = 'Phoenix International Raceway'