[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5419) COUNT operator with composite primary key and JPA 2.0 Criteria API produces bad sql

COUNT operator with composite primary key and JPA 2.0 Criteria API produces bad sql ----------------------------------------------------------------------------------- Key: HHH-5419 URL: https://hibernate.onjira.com/browse/HHH-5419 Project: Hibernate ORM Issue Type: Bug Affects Versions: 3.5.4, 3.6.0.Beta1, 4.0.0.CR3 Environment: hibernate-entitymanager 3.6.0.Beta1, glassfish 3.0.1, linux ubuntu 10.04, MS SQL Server 2008 Reporter: Fabio Braga de Oliveira Assignee: John Verhaeg Priority: Minor Fix For: 4.0.0.CR4, 4.0.0.CR5 Attachments: hibernate-count-bug.zip Hibernate produces a invalid SQL if anyone use the count() operator with the JPA 2.0 Criteria API. Code: CriteriaBuilder cb = getEntityManager().getCriteriaBuilder(); CriteriaQuery<Object[]> cq = cb.createQuery(Object[].class); Root<EntityCompositePK> r = cq.from(EntityCompositePK.class); cq.multiselect(cb.count(r)); assertEquals(0, ((Long) (getEntityManager().createQuery(cq).getSingleResult())[0]).intValue()); I'm sending a little maven project which reproduces the bug.