SELECT  t.name AS [tname] ,
        ' update statistics ' + sch.name + '.[' + t.name + ']  ' [comando]
FROM    sys.tables t
        INNER JOIN sys.schemas sch ON sch.schema_id = t.schema_id
        LEFT JOIN sys.stats s ON t.object_id = s.object_id
        JOIN ( SELECT   object_id ,
                        SUM(rows) rows
               FROM     sys.partitions
               GROUP BY object_id
               HAVING   SUM(rows) > 0
             ) pa ON t.object_id = pa.object_id
WHERE   ( STATS_DATE(t.object_id, stats_id) IS NULL
          OR DATEDIFF(DAY, STATS_DATE(t.object_id, stats_id), GETDATE()) >= 3
        )
GROUP BY sch.name ,
        t.name
ORDER BY 1

SELECT  REPLACE(REPLACE(sch.name + '_' + t.name, '[', '_'), ']', '_') AS [tname] ,
        ' update statistics ' + QUOTENAME(sch.name) + '.' + QUOTENAME(t.name)  [comando]
FROM    sys.tables t
        INNER JOIN sys.schemas sch ON sch.schema_id = t.schema_id
        LEFT JOIN sys.stats s ON t.object_id = s.object_id
        JOIN ( SELECT   object_id ,
                        SUM(rows) rows
               FROM     sys.partitions
               GROUP BY object_id
               HAVING   SUM(rows) > 0
             ) pa ON t.object_id = pa.object_id
WHERE   ( STATS_DATE(t.object_id, stats_id) IS NULL
          OR DATEDIFF(DAY, STATS_DATE(t.object_id, stats_id), GETDATE()) >= 3
        )
GROUP BY sch.name ,
        t.name
ORDER BY 1

app.SaveToXml(packageName + ".dtsx", dataTransferPackage, Nothing)