จำนวนผู้ป่วยโรคโครไตระยะที่ 2 ระยะที่ 2 สูงสุดต่อเดือนนับตั้งแต่ปี 2102 คือเท่าใด? ไม่จำเป็นต้องใช้ตารางทั้งหมด
what is the maximum monthly number of patients who have had chro kidney dis stage ii since 2102?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 MAX(t1.c1) FROM (SELECT COUNT(DISTINCT diagnoses_icd.hadm_id) AS c1 FROM diagnoses_icd WHERE diagnoses_icd.icd9_code = (SELECT d_icd_diagnoses.icd9_code FROM d_icd_diagnoses WHERE d_icd_diagnoses.short_title = 'chro kidney dis stage ii') AND STRFTIME('%y', diagnoses_icd.charttime) >= '2102' GROUP BY STRFTIME('%y-%m', diagnoses_icd.charttime)) AS t1