Andrea Boriero ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiY2ZjYTNlMGY1... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-15766?atlOrigin=eyJpIjoiY2ZjYT... ) HHH-15766 ( https://hibernate.atlassian.net/browse/HHH-15766?atlOrigin=eyJpIjoiY2ZjYT... ) UNION query doesn't preserve the original parenthesis, and so it fails on PostgreSQL ( https://hibernate.atlassian.net/browse/HHH-15766?atlOrigin=eyJpIjoiY2ZjYT... ) Change By: Andrea Boriero ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Fix versions: 6.1.7 ( https://hibernate.atlassian.net/browse/HHH-15766#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15766#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#100214- sha1:b03f6a4 )