Since the Version 6.2.4 the sql is wrong if you have follwing

• EntityA
• EntityB
• EntityA has many-to-one relationship to EntityB
• you select distinct EntityA.entityB and sets max results to something e.g. 2

Real Example attached
hql:

      var list = em.createQuery("select distinct a.entityB from EntityA a ", EntityA.class)
            .setMaxResults(2)
            .getResultList();

Produced sql was correct in 6.2.1, 6.2.3

select * from (select distinct e2_0.tableBId c0 from TABLE_A e1_0 join TABLE_B e2_0 on e2_0.tableBId=e1_0.tableBId) where rownum<=?

Since 6.2.4 the produces SQL is wrong

select * from (select distinct e2_0.tableBId c0,rownum rn from TABLE_A e1_0 join TABLE_B e2_0 on e2_0.tableBId=e1_0.tableBId) r_0_ where r_0_.rn<=? order by r_0_.rn

this is wrong because if you include rownum as column and distinct over it then all rows will become unique even the real duplicates