Robbie McEwen ชนะไปกี่สเตจ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many stages were won by Robbie McEwen?It is not neccessary to use all the tables.
 table_17672470_19:  (stage [ VARCHAR ] winner [ VARCHAR) ]
SELECT COUNT(stage) FROM table_17672470_19 WHERE winner = "Robbie McEwen"