Inspiration
Original Request
Report or Widget to Identify any nodes not included in any map - Orion SDK - The Orion Platform - THWACK (solarwinds.com)
Related Custom Query Widget
Map Membership (Nodes) - Custom Queries - The Orion Platform - THWACK (solarwinds.com)
Example Run
Notes
There are many extra Node-specific fields in the query that are NOT being shown in the report. You can add these fields to the report without editing the data source definition.