[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-1050) HQL Unions

[Matt Sgarlata (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=33151#action_33151 ] 

Matt Sgarlata commented on HHH-1050:
------------------------------------

If the underlying database supports the UNION keyword, Hibernate appears to accept it just fine.  I just used UNION in a HQL query using SQL Server 2000 with no problems.

> HQL Unions
> ----------
>
>                 Key: HHH-1050
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1050
>             Project: Hibernate Core
>          Issue Type: New Feature
>          Components: query-hql
>            Reporter: Steve Ebersole
>            Assignee: Steve Ebersole
>             Fix For: antlr-rework
>
>
> Add the ability to define unions in HQL.  Support will be initially limited to only:
> 1) scalar queries : select id from Animal union select id from Car
> 2) the same entity : from Animal where ... union from Animal where ...
> Support both UNION and UNION ALL

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