what is the minimum hospital cost for a drug with a name called amino acids 4.25%-dextrose 5% this year?
select min(t1.c1) from ( select sum(cost.cost) as c1 from cost where cost.hadm_id in ( select prescriptions.hadm_id from prescriptions where prescriptions.drug = 'amino acids 4.25%-dextrose 5%' ) and datetime(cost.chargetime,'start of year') = datetime(current_time,'start of year','-0 year') group by cost.hadm_id ) as t1