Christian Beikov ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-16315 ( https://hibernate.atlassian.net/browse/HHH-16315?atlOrigin=eyJpIjoiOGE1YT... ) Re: Hibernate 6 fails when use IN-Clause in Spring Boot/JPA with NotYetImplementedFor6Exception / PluralValuedSimplePathInterpretation. ( https://hibernate.atlassian.net/browse/HHH-16315?atlOrigin=eyJpIjoiOGE1YT... ) This is illegal HQL and it only worked before because we didn’t properly validate the query. You will have to create a join for your variable attribute: from Object o join o.variable v where v IN (:parameter) ( https://hibernate.atlassian.net/browse/HHH-16315#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16315#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#100218- sha1:9826a04 )