fix: exclude non-ml units

mimic-iv/concepts_postgres/measurement/daily_fluid_in.sql

@@ -4,13 +4,14 @@ CREATE TABLE mimiciv_derived.daily_fluid_in AS
 WITH RECURSIVE infusion_days AS
 (
   SELECT stay_id,
-    CAST(starttime AS DATE) AS infusion_date,
-    CASE 
+  CAST(starttime AS DATE) AS infusion_date,
+  CASE 
            WHEN CAST(starttime AS DATE) = CAST(endtime AS DATE) THEN amount
            ELSE amount / EXTRACT(EPOCH FROM (endtime - starttime)) / 3600 * (24 - EXTRACT(HOUR FROM starttime))
          END AS daily_amount,
-    endtime
+  endtime
 FROM mimiciv_icu.inputevents
+WHERE amountuom = 'ml'
 )
 SELECT stay_id, infusion_date, SUM(daily_amount) AS total_daily_amount
 FROM infusion_days