Was hit by a request recently, one in which i wasn't prepared for. "Can you tell me what day this particular system first communicated with ePO?", "How about a site(s) of systems?" I knew the information was in the database the question was how to get it out and into a reportable format.
I submit the sql script below as my solution.
Set UserProperty1 =(Select NodeCreatedDate FROM dbo.EPOLeafNode WHERE dbo.EPOLeafNode.AutoID =dbo.EPOComputerProperties.ParentID)
The script queries the "NodeCreatedDate" from the "dbo.EPOLeafNode" table and appends it to the "UserProperty1" field in the "dbo.EPOComputerProperties" table. I have set a job to run this once a week and i am able to generate a report that shows "Custom 1" which contains the date information i require.
IMO it would be nice to have this already part of the default System Information view.