ค่าใช้จ่ายโรงพยาบาลสูงสุดที่เกี่ยวข้องกับขั้นตอนที่เรียกว่า cvvhd ในปี 2104 คือเท่าใด ไม่จำเป็นต้องใช้ตารางทั้งหมด
what is the maximum hospital cost that involves a procedure called c v v h d in 2104.It is not neccessary to use all the tables.
 patient:  uniquepid [ text]  patienthealthsystemstayid [ number]  patientunitstayid [ number]  gender [ text]  age [ text]  ethnicity [ text]  hospitalid [ number]  wardid [ number]  admissionheight [ number]  admissionweight [ number]  dischargeweight [ number]  hospitaladmittime [ time]  hospitaladmitsource [ text]  unitadmittime [ time]  unitdischargetime [ time]  hospitaldischargetime [ time]  hospitaldischargestatus [ text] 
SELECT MAX(t1.c1) FROM (SELECT SUM(cost.cost) AS c1 FROM cost WHERE cost.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.patientunitstayid IN (SELECT treatment.patientunitstayid FROM treatment WHERE treatment.treatmentname = 'c v v h d')) AND STRFTIME('%y', cost.chargetime) = '2104' GROUP BY cost.patienthealthsystemstayid) AS t1