[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-1657) hql update generate wrong sql with joined subclass hierarcy

[Gail Badner (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_30102 ] 

Gail Badner commented on HHH-1657:
----------------------------------

Peter, thanks for the patch. I'm using it as a starting point.

It would really help if someone could provide a patch for some existing unit tests to reproduce this issue using multiple-table implementations of superclasses and subclasses.

In particular, I'm looking for tests that reproduce this issue with HQL using UPDATE and DELETE. I believe that the problem using "ORDER BY" is unrelated, but if someone wants to add tests that reproduce that issue, I'd take a look at that also.

The following test cases provide a good start:

org.hibernate.test.joinedsubclass.JoinedSubclassTest:
Table per subclass (<joined-subclass>)

org.hibernate.test.join.JoinTest: 
Table per subclass, using a discriminator; superclass and subclasses both have join tables

org.hibernate.test.mixed.MixedTest:
Contains a subclass of a subclass in a separate table, using a discriminator

org.hibernate.test.unionsubclass2.UnionSubclassTest:
Table per concrete class

> hql update generate wrong sql with joined subclass hierarcy
> -----------------------------------------------------------
>
>                 Key: HHH-1657
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1657
>             Project: Hibernate3
>          Issue Type: Bug
>          Components: query-hql
>         Environment: Hibernate 3.2.0cr1, Hibernate 3.1.3
>            Reporter: Alexey Romanchuk
>            Assignee: Gail Badner
>            Priority: Critical
>             Fix For: 3.2.x, 3.3.0
>
>
> Let suppose that we have two joined subclass entities: Parent (id PK) and Child (id PK) that mapped with joined subclass method.
> When I try to update Child by id with hql:
> update Child c set c.field = 'value' where c.id = 1234
> hibernate generates joined tables like 
> insert into HT_parent select child0_.id as id from child child0_ inner join parent child0_1_ on child0_.id=child0_1_.id  wher id in = 1234
> look at last condition. hibernate use id WITH OUT tables alias that cause sql exception: column reference "id" is ambiguous

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