Kean Erickson ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-14134 ( https://hibernate.atlassian.net/browse/HHH-14134?atlOrigin=eyJpIjoiYjM4ZT... ) Re: Querying with "IS NOT EMPTY" jpql against a @OneToMany mappedBy collection is failing in mysql for Hibernate v. 5.4.11 and up ( https://hibernate.atlassian.net/browse/HHH-14134?atlOrigin=eyJpIjoiYjM4ZT... ) It looks like extra parentheses are added to the select columns corresponding to an “collection IS NOT EMPTY” check in JPQL, where the collection is a @OneToMany with mappedBy. Mysql doesn’t like these added parens. The query originally in 5.4.10 came out as But in 5.4.11 it resolves to ( https://hibernate.atlassian.net/browse/HHH-14134#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-14134#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#100140- sha1:33445dc )