Hibernate INNER JOIN on

Hibernate is not supported by inner join on and left join on, Right join on. does not support ...

so how to let hibernate support the above connection query?

1. The key lies in the writing of HQL statements.

For example: String hql= "from User u, Comment c where u.uid = c.id ORDER BY u.uid Desc";

2. Create a list.

3. Iteration Set (note returned by object[] array) create object[] o = Object [i]//I is the loop variable of the set

4. If you want to manipulate the entity user, then: o[0], that is, user

If you want to comment an action on an entity, then: o[1], that is, Comment

5. This enables the association (that is, the data you want) to manipulate the entity object.