กี่รอบมี 50 แต้ม ไม่จำเป็นต้องใช้ทุกโต๊ะ
How many laps have 50 points?It is not neccessary to use all the tables.
 table_name_65:  (laps [ VARCHAR ] points [ VARCHAR) ]
SELECT laps FROM table_name_65 WHERE points = "50"