如何解决视图问题，请检查我的代码

Question

Q。以user_travel_details创建视图，其id，名称，源，目的地为user_id.user_name，源和目的地

create or replace view user_travel_details
as
select u.user_id as user_id,
       u.name as user_name,
       s.source as source,
       s.destination as destination
       from users u join tickets t on
       u.user_id=t.user_id join schedule s
       on s.schedule_id=t.schedule_id; 

///输出：视图创建，结果不正确//