refactor cast call to datetime for easier postgres compatibility

Author: Alistair Johnson

mimic-iv/concepts/sepsis/suspicion_of_infection.sql

@@ -41,7 +41,7 @@ WITH ab_tbl AS
     , ab_tbl.ab_id
 
     , me72.micro_specimen_id
-    , coalesce(me72.charttime, CAST(me72.chartdate AS DATETIME)) as last72_charttime
+    , coalesce(me72.charttime, DATETIME(me72.chartdate)) as last72_charttime
     , me72.positiveculture as last72_positiveculture
     , me72.spec_type_desc as last72_specimen
 
@@ -83,7 +83,7 @@ WITH ab_tbl AS
     , ab_tbl.ab_id
 
     , me24.micro_specimen_id
-    , COALESCE(me24.charttime, CAST(me24.chartdate AS DATETIME)) as next24_charttime
+    , COALESCE(me24.charttime, DATETIME(me24.chartdate)) as next24_charttime
     , me24.positiveculture as next24_positiveculture
     , me24.spec_type_desc as next24_specimen