This is just one example.. the intellisense does not work with the SC variable inside a Sub-Query
SELECT SC.SnomedID ,
SC.SnomedCode AS [Code] ,
6 AS [CodeSystem_ID] ,
SC.SnomedDescription AS [DisplayName]
FROM DataCenter.ref.SnomedCode AS SC
WHERE EXISTS ( SELECT *
FROM DataCenter.der.fn_LoadPatientsByRequestID(3, 25) AS P
WHERE EXISTS ( SELECT *
FROM DataCenter.dbo.TobaccoUseStatus AS TUS
WHERE TUS.DataCenterID = P.DataCenterID
AND TUS.CurrentStatus_ID = SC.Sn));
SELECT SC.SnomedID ,