ขั้นตอนที่ได้รับคำสั่งบ่อยที่สุดสามขั้นตอนในผู้ป่วยอายุ 30 จนถึง 1 ปีที่แล้วคืออะไร? ไม่จำเป็นต้องใช้ตารางทั้งหมด
what are the three most frequently ordered procedures in patients with age 30s until 1 year ago?It is not neccessary to use all the tables.
 microbiologyevents:  row_id [ number]  subject_id [ number]  hadm_id [ number]  charttime [ time]  spec_type_desc [ text]  org_name [ text] 
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 DATETIME(procedures_icd.charttime) <= DATETIME(CURRENT_TIME(), '-1 year') GROUP BY procedures_icd.icd9_code) AS t1 WHERE t1.c1 <= 3)