Waldemar.Maier ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=6329a18... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiMDVhMGUyYmVk... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16800?atlOrigin=eyJpIjoiMDVhMG... ) HHH-16800 ( https://hibernate.atlassian.net/browse/HHH-16800?atlOrigin=eyJpIjoiMDVhMG... ) Wrong SELECT Statement Generation with setMaxResults in Hibernate 6.2.4 ( https://hibernate.atlassian.net/browse/HHH-16800?atlOrigin=eyJpIjoiMDVhMG... ) Issue Type: Bug Affects Versions: 6.2.4 Assignee: Unassigned Attachments: EntityA.java, EntityB.java, Testcase.java Components: hibernate-core Created: 14/Jun/2023 12:38 PM Priority: Major Reporter: Waldemar.Maier ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=6329a18... ) 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 ( https://hibernate.atlassian.net/browse/HHH-16800#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16800#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100226- sha1:c25eebb )