Computer Age Chart Report

[brodiemac]

I want to create a chart illustrating the different age of computers we are using. I want to narrow it down to workstations, laptops, etc. so I want to restrict the results to Windows 10 computers since that is the only OS we use for them. This is what I have so far:

Select Top 1000000 DatePart(yyyy, tblAssetCustom.PurchaseDate) As Purchaseyear,
  Count(tblAssets.AssetID) As Total
From tblAssets
  Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
Where tblAssetCustom.State = 1 And tblAssets.OScode Like '%10.%'
Group By DatePart(yyyy, tblAssetCustom.PurchaseDate)
Order By Purchaseyear

The problem is that I believe it is picking up servers as well since their OS also starts with 10. How can I narrow down this report to only include Windows 10 computers?

[CyberCitizen]

I use this report to report on BIOS age as I find it is more reliable regarding how old a device is etc.

Select Top 1000000 tblAssets.AssetID,
  tblAssets.AssetName,
  tblAssets.Username,
  tblAssets.Domain,
  tblAssets.IPAddress,
  tsysIPLocations.IPLocation,
  tblAssetCustom.Manufacturer,
  tblAssetCustom.Model,
  tsysOS.OSname As OS,
  Coalesce(tsysOS.Image, tsysAssetTypes.AssetTypeIcon10) As icon,
  Convert(nVARCHAR(10),tblBIOS.ReleaseDate,101) As [BIOS Date],
  Cast(Round(DateDiff(day, tblBIOS.ReleaseDate, GetDate()) / 365.00,
  2) As Numeric(8,2)) As [Years Old],
  tblAssets.Lastseen,
  tblAssets.Lasttried
From tblAssets
  Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
  Inner Join tsysAssetTypes On tsysAssetTypes.AssetType = tblAssets.Assettype
  Left Join tsysIPLocations On tsysIPLocations.LocationID = tblAssets.LocationID
  Inner Join tblState On tblState.State = tblAssetCustom.State
  Left Join tsysOS On tsysOS.OScode = tblAssets.OScode
  Inner Join tblBIOS On tblAssets.AssetID = tblBIOS.AssetID
Where tblState.Statename = 'Active'
Order By [Years Old] Desc

[RCorbeil]

Add a filter on tblAssets.AssetType < 2. 0 and 1 are two classes of workstation (and laptops). 2+ are classes of servers.

Instead of filtering directly on the OSCode value, consider linking against tsysOS and filtering on tsysOS.OSname instead. That way you can filter explicitly on Win 10 without including the server OS versions that happen to be version 10.something.