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DetachedCriteria criteria = DetachedCriteria.forClass(a.class);
criteria.createAlias("b", "_b");
select a.* , b.* from ...
那样;
public class A{
private B b;
}
public class B
{
private int id;
}
DetachedCriteria criteria = DetachedCriteria.forClass(A.class);
detachedCriteria.add(Restrictions.eq("b.id", 2));