add cast as numeric to round statement

Author: alistairewj

mimic-iv/concepts/measurement/vitalsign.sql

@@ -12,10 +12,10 @@ select
   , AVG(case when itemid = 220180 and valuenum > 0 and valuenum < 300 then valuenum else null end) as dbp_ni
   , AVG(case when itemid = 220181 and valuenum > 0 and valuenum < 300 then valuenum else null end) as mbp_ni
   , AVG(case when itemid in (220210,224690) and valuenum > 0 and valuenum < 70 then valuenum else null end) as resp_rate
-  , ROUND(
+  , ROUND(CAST(
       AVG(case when itemid in (223761) and valuenum > 70 and valuenum < 120 then (valuenum-32)/1.8 -- converted to degC in valuenum call
               when itemid in (223762) and valuenum > 10 and valuenum < 50  then valuenum else null end)
-    , 2) as temperature
+    AS NUMERIC), 2) as temperature
   , MAX(CASE WHEN itemid = 224642 THEN value ELSE NULL END) AS temperature_site
   , AVG(case when itemid in (220277) and valuenum > 0 and valuenum <= 100 then valuenum else null end) as spo2
   , AVG(case when itemid in (225664,220621,226537) and valuenum > 0 then valuenum else null end) as glucose