there are parent/child tables in the persist level of my app.

I am trying to use EJBQL to update the child table, link one row to the parent

something like this:

q = em.createQuery("update child c set c.parent = :PAR where c.id=1");
q.setParameter("PAR", parent);

here parent is a exsisting detached parent instance.

I got "DML not supported" error.  anyone can help me? I am really a SQL beginer.

thanks a lot.

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