Hi guys,
I need some help with my Cisco IOS report.
I have modified the one there is in SW, so I can get some graph on what devices is running what ios version.
But I am seeing a small issue that I hope you guys can help me with.
I found this SQL script here in the forum
SELECT N.IOSVersion, DD.Date, SUM (CASE WHEN Mult = 0 THEN -1 ELSE 1 END) AS Count
FROM Nodes N
-- ${ToTime} - bug has to be there
cross join (
SELECT DATEADD(mi,-30, GETDATE()) AS Date, 0 as Mult
UNION all
SELECT GETDATE() AS Date, 1 as Mult
UNION ALL
SELECT DATEADD(mi,30, GETDATE()) AS Date, 0 as Mult
) AS DD
GROUP BY IOSVersion, DD.Date, DD.Mult
ORDER BY DD.Date
and that is ok, but if you look here in my graph list it shows around 160 devices there dont have a ios version.

How can I get this fixed so my IOS report will work as intended.
Hope someone can help me out here. 
Frank