"Gizdek" wrote : Inside my project i'm trying to do a cross join like: | | assignedGroupsList = em.createQuery("select g.name from Groups as g, User2SecondaryGroup as s where s.gid = g.gid and s.uid = :userid").setParameter("userid", this.user.getUid()).getResultList(); | | I've made a mistake in my post , above you see the right quary i'm using and i am getting the shown exception. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3994307#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...