Hi, I created a named query like this: | @NamedQuery(name = "topItems", query = "select i from Orderitem oi inner join oi.item i group by i order by sum(oi.quantity) desc") | | public Collection<Item> getTopItems() | { | Query q = em.createNamedQuery("topItems"); | q.setMaxResults(25); | return (Collection<Item>) q.getResultList(); | } | But this doesn't seem to work like I expect it to work: I get an exception from the JDBC-driver :( It seems like my database (MySQL) doesn't like the "sum(oi.quantity)" in the order by clause :( well, I played with the sql, and it seems like MySQL would prefer something like this: | @NamedQuery(name = "topItems", query = "select i, sum(oi.quantity) as qty from Orderitem oi inner join oi.item i group by i order by qty desc") | But this in turn doesn't seem to work with hibernate, at least I tried to evaluate this expression in the HQL-Editor, and hibernate could not create a SQL-statment :( View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4024559#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...