ยาที่พบบ่อยที่สุดห้าชนิดที่กำหนดจนถึงปี 2103 คืออะไร?ไม่จำเป็นต้องใช้ตารางทั้งหมด
what were the five most common drugs prescribed until 2103?It is not neccessary to use all the tables.
 diagnosis:  diagnosisid [ number]  patientunitstayid [ number]  diagnosisname [ text]  diagnosistime [ time]  icd9code [ text] 
SELECT t1.drugname FROM (SELECT medication.drugname, DENSE_RANK() OVER (ORDER BY COUNT(*) DESC) AS c1 FROM medication WHERE STRFTIME('%y', medication.drugstarttime) <= '2103' GROUP BY medication.drugname) AS t1 WHERE t1.c1 <= 5