
AS 
SELECT af.FileID,
            (CASE
                 WHEN maf.FileName IS NOT NULL THEN maf.FileName
                 ELSE CAST(af.FileNumber AS VARCHAR(16))
             END) AS fName,
            (CASE
                 WHEN mad.DBName IS NOT NULL THEN mad.DBName
                 ELSE CAST(ad.DBNumber AS VARCHAR(16)) 
             END) AS db
     FROM AdabasFiles af 
          INNER JOIN AdabasDatabases ad ON ad.AdabasDBID = af.AdabasDBID
          LEFT OUTER JOIN MFAdabasFiles maf ON maf.FileNumber = af.FileNumber
          LEFT OUTER JOIN MFAdabasDB mad ON mad.DBNumber = ad.DBNumber

		
		
