บอกเพศคนไข้ 028-40370 ไม่จำเป็นต้องใช้ทุกโต๊ะ
tell me the sex of patient 028-40370.It is not neccessary to use all the tables.
 cost:  costid [ number]  uniquepid [ text]  patienthealthsystemstayid [ number]  eventtype [ text]  eventid [ number]  chargetime [ time]  cost [ number] 
SELECT DISTINCT patient.gender FROM patient WHERE patient.uniquepid = '028-40370'