Combine orderBy_ with join_

[shlevy]

If I have a join_ where I compare some row's value to the primaryKey of some previous result in the same query, I can no longer orderBy_ directly on that join_ (due to a mismatch between QBaseScope and QNested QBaseScope). Instead I have to move the orderBy_ to the whole select. Is there a reason the result of the subquery returning the foreign key can't be more polymorphic?

[kmicklas]

What exactly do you propose making more polymorphic?

An example/snippet with the desired SQL would help.