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From "Azuo Lee (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (OPENJPA-1819) ORDER BY will append additional column to the SELECT clause which may potentialy cause ORA-00979 error
Date Thu, 07 Oct 2010 17:23:32 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-1819?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Azuo Lee resolved OPENJPA-1819.
-------------------------------

       Resolution: Fixed
    Fix Version/s: 2.1.0

Fixed in 2.1.0-20101001.064809-70.

> ORDER BY will append additional column to the SELECT clause which may potentialy cause
ORA-00979 error
> ------------------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-1819
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1819
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: sql
>    Affects Versions: 2.1.0
>         Environment: OpenJPA 2.1
> Oracle 9.2
>            Reporter: Azuo Lee
>            Priority: Critical
>             Fix For: 2.1.0
>
>         Attachments: OPENJPA-1819.patch
>
>
> Assuming entity Person and entity Exam has one-to-many association, the following JPQL
statement:
> SELECT p.id r1, p.name r2, sum(e.score) r3 FROM Exam e LEFT JOIN e.person p GROUP BY
p.id, p.name ORDER BY p.id
> will produce the following SQL, which is not executable if the underlining database is
Oracle 9.2:
> SELECT t1.id, t1.name, SUM(t0.score) AS r3, t0.person FROM exams t0, persons t1 WHERE
t0.person = t1.id(+) GROUP BY t1.id, t1.name ORDER BY t0.person ASC
> The additional column "t0.person" will cause error ORA-00979: not a GROUP BY expression.
> The correct SQL should be:
> SELECT t1.id, t1.name, SUM(t0.score) AS r3 FROM exams t0, persons t1 WHERE t0.person
= t1.id(+) GROUP BY t1.id, t1.name ORDER BY t1.id ASC

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