how many times has patient 94956 been prescribed in 06/this year for 5% dextrose?
select count(*) from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 94956 ) and prescriptions.drug = '5% dextrose' and datetime(prescriptions.startdate,'start of year') = datetime(current_time,'start of year','-0 year') and strftime('%m',prescriptions.startdate) = '06'