Nested Join Criteria generates non-working SQL ---------------------------------------------- Key: EJB-380 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-380 Project: Hibernate Entity Manager Issue Type: Bug Environment: Hibernate version: Core 3.2.6 GA Annotations 3.3.1 GA Entity Manager 3.3.2 GA Name and version of the database you are using: PostgreSQL 8.0.15 Reporter: Ristretto Priority: Minor A "org.postgresql.util.PSQLException: ERROR: table name "comp1x2_" specified more than once" exception is thrown when executing the following query using Criteria: Criteria criteria = em.getSession().createCriteria(Customer.class); criteria.createAlias("supplier", "supp1"); criteria.createAlias("supp1.company", "comp1"); criteria.add(Restrictions.eq("comp1.name", "Test Name")); List<Customer> customers = criteria.list(); I have also tested the snippet of code with MySQL and obtained a similar MySQL exception. The generated sql statement is as follows (Supplier is the superclass of Partner and Provider and I'm using a Joined Table inheritance strategy) : select [...] from Customer this_ inner join Supplier supp1x1_ on this_.supplierId=supp1x1_.id left outer join Provider supp1x1_1_ on supp1x1_.id=supp1x1_1_.id left outer join Partner supp1x1_2_ on supp1x1_.id=supp1x1_2_.id inner join Company comp1x2_ on supp1x1_1_.companyId=comp1x2_.id inner join Company comp1x2_ on supp1x1_2_.companyId=comp1x2_.id where comp1x2_.name=? -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira