Scott Dixon มีตำแหน่งกริดกี่ตำแหน่ง?ไม่จำเป็นต้องใช้ตารางทั้งหมด
Scott Dixon had how many Grid positions?It is not neccessary to use all the tables.
 table_21423:  "Driver" [ text]  "Team" [ text]  "Laps" [ real]  "Time/Retired" [ text]  "Grid" [ real]  "Points" [ text] 
SELECT COUNT("Grid") FROM table_21423 WHERE "Driver" = 'Scott Dixon'