Traveling salesman problem with ordering

Two groups with equal number of nodes. Nodes in the second group can only be visited after their corresponding nodes in the first group are visited.

I want to know whether there are some alogirthms to solve this kind of TSP.

Thanks a lot!

Please provide:

  • table difinitions in the form of create statements
  • sample data in the form of insert statements
  • the query you got so far (and error message if any)
  • expected output from the sample data you provide