3 ขั้นตอนที่ได้รับบ่อยที่สุดสำหรับผู้ป่วยอายุ 60 ปีขึ้นไปคืออะไร? ไม่จำเป็นต้องใช้ตารางทั้งหมด
what are the three most frequently given procedures for patients with age 60 or above?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 >= 60) GROUP BY procedures_icd.icd9_code) AS t1 WHERE t1.c1 <= 3)