Is it possible to bulk delete from a many-many association with HQL?

Question

And if so, what is the syntax?

Assume that I want an instance of Foo to be unassociated from all instances of Bar: In SQL it would simply be:

delete          


        

Answer 1

Removing associations alone is not possible with HQL. What you can do, however, is either:

A) Assuming you're doing it for a single Foo and your cascade is set appropriately, you can load that Foo instance, clear its collection of bars and save it.

B) If you're trying to clear bars from multiple Foos you can map an SQL query instead of HQL