GROUP BY entity does not work ----------------------------- Key: HHH-1615 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1615 Project: Hibernate Core Issue Type: Improvement Components: query-hql Affects Versions: 3.2.5 Environment: PostgreSQL 8.1.3, Hibernate 3.1.3 Reporter: Xavier Bugaud Assignee: Anthony Patricio Priority: Critical Attachments: group-by-discriminator.patch, hibernate-group-by.diff The query : "select cat, count(*) from Cat cat group by cat" does not work. ERROR: column "xxxx" must appear in the GROUP BY clause or be used in an aggregate function See : - http://forum.hibernate.org/viewtopic.php?t=953716 - http://jira.nhibernate.org/browse/NH-528