มีนักแข่งกี่คนที่ไม่ได้ออกสตาร์ท ?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
how many racers did not start ?It is not neccessary to use all the tables.
 table_204_603:  id [ number]  "pos" [ text]  "no" [ number]  "rider" [ text]  "bike" [ text]  "laps" [ number]  "time" [ text]  "grid" [ number]  "points" [ number] 
SELECT COUNT("rider") FROM table_204_603 WHERE "time" = 'did not start'