code: def user_projects(request):
      
      projects_owned = (
          request.db.query(Project.id)
          .join(Role.project)
          .filter(Role.role_name == "Owner", Role.user == request.user)
          .subquery()
      )
  
      with_sole_owner = (
          request.db.query(Role.project_id)
          .join(projects_owned)
          .filter(Role.role_name == "Owner")
          .group_by(Role.project_id)
          .having(func.count(Role.project_id) == 1)
          .subquery()
      )
  
      return {
          "projects_owned": (
              request.db.query(Project)
              .join(projects_owned, Project.id == projects_owned.c.id)
              .order_by(Project.name)
              .all()
          ),
          "projects_sole_owned": (
              request.db.query(Project).join(with_sole_owner).order_by(Project.name).all()
          ),
      }
docs: Return all the projects for which the user is a sole owner