Querying SC+ for incidents which have been open for more than 1 hour and haven't been assigned a priority or support rep

Querying SC+ for incidents which have been open for more than 1 hour and haven't been assigned a priority or support rep

Hi,
      I'm hoping that someone can help me with what I thought would be a simple SQL query but has proven more complicated than first thought.
 
      I'd like to return a list of all the incidents in the system which:
1) Are older than 1 hour
2a) Haven't been assigned to anyone
      or
2b) Haven't been assigned a priority
 
 
      Thanks in advance to anyone who's able to help!
Andy

                New to ADSelfService Plus?