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From "Dmitriy V. Ryaboy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-2536) Extend pig to support DISTINCT x.(project)
Date Sun, 16 Sep 2012 02:00:07 GMT

    [ https://issues.apache.org/jira/browse/PIG-2536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13456519#comment-13456519
] 

Dmitriy V. Ryaboy commented on PIG-2536:
----------------------------------------

Jon how do you feel about this one?
                
> Extend pig to support DISTINCT x.(project)
> ------------------------------------------
>
>                 Key: PIG-2536
>                 URL: https://issues.apache.org/jira/browse/PIG-2536
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Jonathan Coveney
>            Assignee: Jonathan Coveney
>            Priority: Minor
>             Fix For: 0.11
>
>         Attachments: PIG-2436-0.patch
>
>
> Currently, pig does not allow this syntax:
> {code}
> A = load 'thing' (x:int, y:int, z:int);
> B = distinct A.x;
> C = distinct A.(y,z)
> D = distinct C.$0;
> {code}
> and so on. With this patch, it does. I should probably add more tests, though it's a
simple patch... it just turns distinct rel.proj into syntactic sugar for distinct (foreach
rel generate proj)

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