ยาที่คนไข้ 021-93953 รับประทานในวันเดียวกันหลังจากเข้ารับบริการช่วยหายใจครั้งสุดท้ายในโรงพยาบาลครั้งสุดท้ายคือยาอะไร? ไม่จำเป็นต้องใช้ทุกโต๊ะ
what is the drug that patient 021-93953 was prescribed with in the same day after having undergone mechanical ventilation in their last hospital encounter?It is not neccessary to use all the tables.
 diagnosis:  diagnosisid [ number]  patientunitstayid [ number]  diagnosisname [ text]  diagnosistime [ time]  icd9code [ text] 
SELECT t2.drugname FROM (SELECT patient.uniquepid, treatment.treatmenttime FROM treatment JOIN patient ON treatment.patientunitstayid = patient.patientunitstayid WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '021-93953' AND NOT patient.hospitaldischargetime IS NULL ORDER BY patient.hospitaladmittime DESC LIMIT 1) AND treatment.treatmentname = 'mechanical ventilation') AS t1 JOIN (SELECT patient.uniquepid, medication.drugname, medication.drugstarttime FROM medication JOIN patient ON medication.patientunitstayid = patient.patientunitstayid WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '021-93953' AND NOT patient.hospitaldischargetime IS NULL ORDER BY patient.hospitaladmittime DESC LIMIT 1)) AS t2 ON t1.uniquepid = t2.uniquepid WHERE t1.treatmenttime < t2.drugstarttime AND DATETIME(t1.treatmenttime, 'start of day') = DATETIME(t2.drugstarttime, 'start of day')