คนไข้ 15447 เข้ารับการรักษาในไอซียูครั้งแรกชื่ออะไร? ไม่จำเป็นต้องใช้ตารางทั้งหมด
what was the name of the intake, patient 15447 first had on the current icu visit?It is not neccessary to use all the tables.
 cost:  row_id [ number]  subject_id [ number]  hadm_id [ number]  event_type [ text]  event_id [ number]  chargetime [ time]  cost [ number] 
SELECT d_items.label FROM d_items WHERE d_items.itemid IN (SELECT inputevents_cv.itemid FROM inputevents_cv WHERE inputevents_cv.icustay_id IN (SELECT icustays.icustay_id FROM icustays WHERE icustays.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 15447) AND icustays.outtime IS NULL) ORDER BY inputevents_cv.charttime LIMIT 1)