Marco Belladelli ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=637b480... ) *commented* on HHH-16771 ( https://hibernate.atlassian.net/browse/HHH-16771?atlOrigin=eyJpIjoiZTUyMT... ) Re: group by someEntity where entity has json (not jsonb) columns results in failure on PostgreSQL ( https://hibernate.atlassian.net/browse/HHH-16771?atlOrigin=eyJpIjoiZTUyMT... ) Hi Yoann Rodière ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) , I saw the quarkus issue and already opened https://hibernate.atlassian.net/browse/HHH-16770. Now, in the case of a group by used in a subquery there is another problem: we’re expading the columns used for grouping while we never expand the selection since we are not in a top-level context. This is an issue and I’m working on a fix. The problem with the json type does exist for top-level queries though, and it might not be as easy as limiting the group by to the selected columns. Suppose we have this query: select b from EntityB b group by b , for which Hibernate will expand the b entity valued path in the selection to all columns. Now, we need to also expand the group by expression to all columns to avoid any not a group by expression errors on all DBs. ( https://hibernate.atlassian.net/browse/HHH-16771#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16771#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#100225- sha1:62413c2 )