indicate the daily maximum amount of sao2 for patient 24132 since 1138 days ago.
select max(chartevents.valuenum) from chartevents where chartevents.icustay_id in ( select icustays.icustay_id from icustays where icustays.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 24132 ) ) and chartevents.itemid in ( select d_items.itemid from d_items where d_items.label = 'sao2' and d_items.linksto = 'chartevents' ) and datetime(chartevents.charttime) >= datetime(current_time,'-1138 day') group by strftime('%y-%m-%d',chartevents.charttime)