Jones ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-16189 ( https://hibernate.atlassian.net/browse/HHH-16189?atlOrigin=eyJpIjoiZThmYT... ) Re: Hibernate 6, wrong order by and group by generated with MappedSuperclass and Generics ( https://hibernate.atlassian.net/browse/HHH-16189?atlOrigin=eyJpIjoiZThmYT... ) I would like to add that I’m facing the same issue with Oracle: When I have an entity with multiple subclasses using a single table and discriminator, I get the same issue… The select has all properties from all sub-classes, but the group by is missing, which causes issues in oracle: Hibernate: select sum(m1_0.amount), r1_0.ID, r1_0.DISC_COL, r1_0.RELATED_VALUE, r1_0.ONLY_CHILD_ONE, r1_0.ONLY_CHILD_TWO from MY_TABLE m1_0 join MY_TABLE r1_0 on r1_0.ID=m1_0.REL_ENTITY where 1=1 group by r1_0.ID, r1_0.DISC_COL, r1_0.RELATED_VALUE I’m attaching a test case for it just as a reference HHH-16XX1.zip ( https://hibernate.atlassian.net/secure/attachment/50243/50243_HHH-16XX1.zip ) ( https://hibernate.atlassian.net/browse/HHH-16189#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16189#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#100217- sha1:f4229d0 )