Bogdan Ilchyshyn ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiZTdmNmRiYjNi... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-17028?atlOrigin=eyJpIjoiZTdmNm... ) HHH-17028 ( https://hibernate.atlassian.net/browse/HHH-17028?atlOrigin=eyJpIjoiZTdmNm... ) Unrelated left join fails when query has multiple roots ( https://hibernate.atlassian.net/browse/HHH-17028?atlOrigin=eyJpIjoiZTdmNm... ) Change By: Bogdan Ilchyshyn ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Consider three simple entities: {code:java}@Entity public class RootEntity { @Id private Long id; private String name; } @Entity public class UnrelatedEntity { @Id private Long id; private String name; private String someValue; } @Entity public class OtherEntity { @Id private Long id; }{code} Execute a query which has two roots and one unrelated join: {code:java}entityManager.createQuery(""" select r.name, u.someValue, oe.id from RootEntity r, OtherEntity oe left join UnrelatedEntity u on u.name = r.name """).getResultList();{code} With Hibernate 5.x, the query is executed successfully. With Hibernate 6.x, the query fails: {noformat}java.lang.IllegalArgumentException: org.hibernate.query.SemanticException: SqmQualifiedJoin predicate referred to SqmRoot [com.example.demo.RootEntity(r)] other than the join's root [com.example.demo.UnrelatedEntity(u)]{noformat} If {{OtherEntity oe}} is removed from {{from}} clause, the query is executed successfully. Please see reproducer: [^hibernate-orm-6-HHH-17028.zip] This bug is blocking our migration to Hibernate 6 (and consequently to Spring Boot 3). Please let me know if you need a full-fledged reproducer project. ( https://hibernate.atlassian.net/browse/HHH-17028#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-17028#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#100233- sha1:3ea1a2a )