Be sure you've checked (activated) the option for Windows Renaming Detection (Detect when a Windows computer has been renamed), located at the bottom of the page Configuration>Server Options.
This will add a Comment whenever a name change is found. Comments can be included in reports.
Select Top 1000000 tblAssets.AssetID,
tblAssets.AssetName,
tsysAssetTypes.AssetTypename,
tsysAssetTypes.AssetTypeIcon10 As icon,
tblAssets.IPAddress,
tblAssets.Lastseen,
tblAssets.Lasttried,
tblAssetComments.Comment,
tblAssetComments.AddedBy,
tblAssetComments.Added
From tblAssets
Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
Inner Join tsysAssetTypes On tsysAssetTypes.AssetType = tblAssets.Assettype
Inner Join tblAssetComments On tblAssets.AssetID = tblAssetComments.AssetID
Where tblAssetCustom.State = 1