[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-892) HQL parser does not resolve alias in ORDER BY clause

[Tomasz Bech (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32259#action_32259 ] 

Tomasz Bech commented on HHH-892:
---------------------------------

I hope Hibernate is going to be JPA 2.0 compliant (where ordering by alias in supported)

>From the JPA 2.0 spec:

The ORDER BY clause allows the objects or values that are returned by the query to be ordered.
The syntax of the ORDER BY clause is
orderby_clause ::= ORDER BY orderby_item {, orderby_item}*
orderby_item ::= { state_field_path_expression | result_variable } [ASC | DESC]


SELECT o.quantity, o.cost*1.08 AS taxedCost, a.zipcode
FROM Customer c JOIN c.orders o JOIN c.address a
WHERE a.state = 'CA' AND a.county = 'Santa Clara'
ORDER BY o.quantity, taxedCost, a.zipcode



> HQL parser does not resolve alias in ORDER  BY clause
> -----------------------------------------------------
>
>                 Key: HHH-892
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-892
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: query-hql
>    Affects Versions: 3.0.5
>         Environment: Hibernate 3.0.5, MySQL, Tomcat
>            Reporter: Guido Laures
>            Priority: Minor
>
> When using an alias for an ORDER BY clause this is not always correctly resolved. Example:
> SELECT SUM(A.x) AS mySum FROM MyClass AS A GROUP BY A.y ORDER BY mySum
> does not work because "mySum" is not resolved in the ORDER BY clause which results in an exception telling that mySum is an unknown column.
> Workaround (not to say "hack") is using:
> SELECT SUM(A.x) AS mySum FROM MyClass AS A GROUP BY A.y ORDER BY col_0_0_

-- 
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.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira