การบริโภคสี่รายการบ่อยที่สุดในปี 2100 คืออะไร? ไม่จำเป็นต้องใช้ตารางทั้งหมด
what are the four most frequent intakes in 2100?It is not neccessary to use all the tables.
 prescriptions:  row_id [ number]  subject_id [ number]  hadm_id [ number]  startdate [ time]  enddate [ time]  drug [ text]  dose_val_rx [ text]  dose_unit_rx [ text]  route [ text] 
SELECT d_items.label FROM d_items WHERE d_items.itemid IN (SELECT t1.itemid FROM (SELECT inputevents_cv.itemid, DENSE_RANK() OVER (ORDER BY COUNT(*) DESC) AS c1 FROM inputevents_cv WHERE STRFTIME('%y', inputevents_cv.charttime) = '2100' GROUP BY inputevents_cv.itemid) AS t1 WHERE t1.c1 <= 4)