How to join unassociated entities in a criteria query java. slug. 1 is to create a cross-join and reduce the cartesian product in the WHERE statement. slug = pv. Joining unrelated entities in JPA and Hibernate involves executing custom queries, as there is no direct relationship defined in your entity mapping. class) However, this feature is not available in Criteria API, as that would require an API extension. 1 adds support for this feature in JPQL and HQL queries. title = :title. 1, you can join unrelated entities when using JPQL and HQL: select p as post, count(pv) as page_views. Hibernate 5. where p.