ขั้นตอนใดบ้างที่ได้รับความนิยมสูงสุดสามอันดับแรกนับตั้งแต่ปี 2101?ไม่จำเป็นต้องใช้ตารางทั้งหมด
what are the procedures that are the top three most commonly received since 2101?It is not neccessary to use all the tables.
 cost:  costid [ number]  uniquepid [ text]  patienthealthsystemstayid [ number]  eventtype [ text]  eventid [ number]  chargetime [ time]  cost [ number] 
SELECT t1.treatmentname FROM (SELECT treatment.treatmentname, DENSE_RANK() OVER (ORDER BY COUNT(*) DESC) AS c1 FROM treatment WHERE STRFTIME('%y', treatment.treatmenttime) >= '2101' GROUP BY treatment.treatmentname) AS t1 WHERE t1.c1 <= 3