instruction: what was the total amount of output for patient 25814 since 775 days ago?
response: SELECT SUM(outputevents.value) FROM outputevents WHERE outputevents.icustay_id IN (SELECT icustays.icustay_id FROM icustays WHERE icustays.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 25814)) AND DATETIME(outputevents.charttime) >= DATETIME(CURRENT_TIME(), '-775 day')