Do you have an example of the right tool? SQL is already a DSL and I can't see how creating another language isn't just adding more overhead without actually getting you to usable objects.

The only reason objects are the "wrong" abstraction is because they don't match relational models exactly. That impedance mismatch is the entire reason for the object-to-relational mapping, otherwise you can use things like document-stores and just serialize your objects directly.