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https://issues.apache.org/jira/browse/PIG-1034?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12891877#action_12891877
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Thejas M Nair commented on PIG-1034:
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I am reviewing this patch.
> Pig does not support ORDER ... BY group alias
> ---------------------------------------------
>
> Key: PIG-1034
> URL: https://issues.apache.org/jira/browse/PIG-1034
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.8.0
> Reporter: David Ciemiewicz
> Assignee: Jeff Zhang
> Fix For: 0.8.0
>
> Attachments: PIG_1034.patch
>
>
> GROUP ... ALL and GROUP ... BY produce an alias "group".
> Pig produces a syntax error if you attempt to ORDER ... BY group.
> This does seem like a perfectly reasonable thing to do.
> The workaround is to create an alias for group using an AS clause. But I
> think this workaround should be unnecessary.
> Here's sample code which elicits the syntax error:
> {code}
> A = load 'one.txt' using PigStorage as (one: int);
> B = group A all;
> C = foreach B generate
> group,
> COUNT(A) as count;
> D = order C by group parallel 1; -- group is one of the aliases in C, why
> does this throw a syntax error?
> dump D;
> {code}
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