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Posted to jdo-dev@db.apache.org by "Andy Jefferson (JIRA)" <ji...@apache.org> on 2010/12/12 18:25:01 UTC

[jira] Commented: (JDO-643) avg return type

    [ https://issues.apache.org/jira/browse/JDO-643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12970618#action_12970618 ] 

Andy Jefferson commented on JDO-643:
------------------------------------

+1 on this. Perhaps we could at least get agreement that this is how it ought to be and I can change the RI and any test accordingly.

> avg return type
> ---------------
>
>                 Key: JDO-643
>                 URL: https://issues.apache.org/jira/browse/JDO-643
>             Project: JDO
>          Issue Type: Bug
>          Components: specification
>    Affects Versions: JDO 2 maintenance release 2
>            Reporter: Guido Anzuoni
>            Assignee: Michael Bouschen
>             Fix For: JDO 3 maintenance release 1
>
>
> Aggregate type specification at page 175 claims that avg(expression) return type is the same of the enclosed expression.
> This is wrong from a strictly mathematical point of view.
> In fact, if you select an avg on an int field member the result is truncated.
> The result type should always be double.

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