1. JPQL, EJBQL and HQL    coderanch.com

2. difference between hql and ejbql    forum.hibernate.org

They look very alike. If you know ejbql, you shouldn't have problems learning HQL. In my opinion, HQL is far more elegant and powerful than EJBQL. A word of caution: you souldn't use HQL all the time... just when things get too hard to do it with other methods. First, you should rely in your domain logic connectors. Then, on the ...