-monos ราคาเท่าไหร่?ไม่จำเป็นต้องใช้ตารางทั้งหมด
whats the cost for -monos?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 cost.cost FROM cost WHERE cost.eventtype = 'lab' AND cost.eventid IN (SELECT lab.labid FROM lab WHERE lab.labname = '-monos')