Hello, 

I have a question if I already have  "Edge Historian with SQL Export (ZS14-ARCHEXP)"
does the  "ZS15-ZSQLSRV" gives me any more functionality ? I only can think out that it allows me to use function "Export" and choose the SQL option (that i would call manual export). 

"Edge Historian with SQL export" should be enough to evacuate data and retrieve it back with "Extended trends" or "Reports" . Or it need that extra license for that ?