[hibernate-issues] [Hibernate-JIRA] Created: (HHH-4069) DetachedCriteria with Projections generates invalid SQL when using inheritance with PostgreSQL

DetachedCriteria with Projections generates invalid SQL when using inheritance with PostgreSQL ---------------------------------------------------------------------------------------------- Key: HHH-4069 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4069 Project: Hibernate Core Issue Type: Bug Components: query-criteria Affects Versions: 3.2.6 Environment: Hibernate 3.2.6 GA with annotations, PostgreSQL 8.3, Ubuntu Linux Reporter: Gajo Csaba Attachments: postgretest.zip PostgreSQL doesn't allow using aliases in the WHERE clause. For example, the following query is invalid: SELECT it.id_item as aaa FROM Item it WHERE aaa=1 The correct query would be: SELECT it.id_item as aaa FROM Item it WHERE it.id_item=1 When having inheritance with a TABLE_PER_CLASS strategy, the HSQL query "select idItem from Item where idItem=:idItem" will generate the correct query. However, doing the same with a DetachedCriteria will generate the invalid query. Note that I'm not selecting everything from Item. It's not select *. I'm only selecting idItem, which means in the DetachedCriteria I'm using Projections. Without projections, the generated query works fine. I've attached a test case, and the following is a short explanation: model.Item - abstract superclass model.Product - extends Item model.Project - extends Item Main is the main class. Removing the following piece of code will make the test case work without errors: criteria.setProjection(Projections.projectionList() .add(Projections.property("idItem"), "idItem") .add(Projections.property("name"), "name")); The test case may be compiled with Maven. -- 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