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

[Paul Giblock (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=35421#action_35421 ] 

Paul Giblock commented on HHH-1657:
-----------------------------------

I am affected by this problem as well.  A simple "update Child c set c.field = value where c.id in (:cids)" is causing the issue.  In this case, the c.id field is the super class's Id.

I am updating 100 or so records.  It sucks having to go back to SQL, and it is even worse having to do 100+ queries when individually merging the records.

It is almost insulting that a bug like this would be left open for over three years.  If Hibernate cannot support simple updates, then the executeUpdate() function should just be removed.

> hql update generate wrong sql with joined subclass hierarcy
> -----------------------------------------------------------
>
>                 Key: HHH-1657
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1657
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: query-hql
>         Environment: Hibernate 3.2.0cr1, Hibernate 3.1.3
>            Reporter: Alexey Romanchuk
>            Assignee: Gail Badner
>
> 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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