Fakhri Nasibov ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5afdbe0... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiZDNmMDE2NDM1... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-17018?atlOrigin=eyJpIjoiZDNmMD... ) HHH-17018 ( https://hibernate.atlassian.net/browse/HHH-17018?atlOrigin=eyJpIjoiZDNmMD... ) IllegalAurgumentException when trying to run window function HQL ( https://hibernate.atlassian.net/browse/HHH-17018?atlOrigin=eyJpIjoiZDNmMD... ) Issue Type: Bug Affects Versions: 6.2.7 Assignee: Unassigned Components: hibernate-core, query-hql Created: 31/Jul/2023 14:17 PM Priority: Major Reporter: Fakhri Nasibov ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5afdbe0... ) Query select contact from (select numeredContact, row_number() over(partition by numeredContact.name, numeredContact.phone) as num from Contact numeredContact ) as contact where contact.num = 1 throws Caused by: java.lang.IllegalArgumentException: Component at index 0 has no alias, but alias is required Found this bug while usin spring data with spring boot 3 which using hibernate-core 6+ version. I prepared reproducer project ( https://github.com/fnasibov/WindiwedFunctionIssue ) with hibernate(without spring) and with spring boot 3 here ( https://github.com/fnasibov/exploringStarters ). Same query but native work well, ( https://hibernate.atlassian.net/browse/HHH-17018#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-17018#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#100233- sha1:b4f309b )