ครั้งแรกที่ ผู้ป่วย 030-10407 มี rdw สูงสุดคือเมื่อใด?ไม่จำเป็นต้องใช้ตารางทั้งหมด
when was the first time that , patient 030-10407 had the maximum of rdw?It is not neccessary to use all the tables.
 microlab:  microlabid [ number]  patientunitstayid [ number]  culturesite [ text]  organism [ text]  culturetakentime [ time] 
SELECT lab.labresulttime FROM lab WHERE lab.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '030-10407')) AND lab.labname = 'rdw' ORDER BY lab.labresult DESC, lab.labresulttime LIMIT 1