จนถึงปี 2102 ขั้นตอนที่ได้รับคำสั่งบ่อยที่สุดสามขั้นตอนสำหรับผู้ป่วยอายุ 30 ปีคืออะไร?ไม่จำเป็นต้องใช้ตารางทั้งหมด
until 2102, what was the three most frequently ordered procedure for patients 30s?It is not neccessary to use all the tables.
 inputevents_cv:  row_id [ number]  subject_id [ number]  hadm_id [ number]  icustay_id [ number]  charttime [ time]  itemid [ number]  amount [ number] 
SELECT d_icd_procedures.short_title FROM d_icd_procedures WHERE d_icd_procedures.icd9_code IN (SELECT t1.icd9_code FROM (SELECT procedures_icd.icd9_code, DENSE_RANK() OVER (ORDER BY COUNT(*) DESC) AS c1 FROM procedures_icd WHERE procedures_icd.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.age BETWEEN 30 AND 39) AND STRFTIME('%y', procedures_icd.charttime) <= '2102' GROUP BY procedures_icd.icd9_code) AS t1 WHERE t1.c1 <= 3)