ตัวอย่างการทดสอบสี่รายการที่พบบ่อยที่สุดที่ผู้ป่วยได้รับในเดือนเดียวกันหลังจากได้รับการวินิจฉัยว่าเป็น cerv spondyl w myelopath คืออะไร? ไม่จำเป็นต้องใช้ตารางทั้งหมด
what was the four most frequent specimen tests that patients had during the same month after they had been diagnosed with cerv spondyl w myelopath?It is not neccessary to use all the tables.
 procedures_icd:  row_id [ number]  subject_id [ number]  hadm_id [ number]  icd9_code [ text]  charttime [ time] 
SELECT t3.spec_type_desc FROM (SELECT t2.spec_type_desc, DENSE_RANK() OVER (ORDER BY COUNT(*) DESC) AS c1 FROM (SELECT admissions.subject_id, diagnoses_icd.charttime FROM diagnoses_icd JOIN admissions ON diagnoses_icd.hadm_id = admissions.hadm_id WHERE diagnoses_icd.icd9_code = (SELECT d_icd_diagnoses.icd9_code FROM d_icd_diagnoses WHERE d_icd_diagnoses.short_title = 'cerv spondyl w myelopath')) AS t1 JOIN (SELECT admissions.subject_id, microbiologyevents.spec_type_desc, microbiologyevents.charttime FROM microbiologyevents JOIN admissions ON microbiologyevents.hadm_id = admissions.hadm_id) AS t2 ON t1.subject_id = t2.subject_id WHERE t1.charttime < t2.charttime AND DATETIME(t1.charttime, 'start of month') = DATETIME(t2.charttime, 'start of month') GROUP BY t2.spec_type_desc) AS t3 WHERE t3.c1 <= 4