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https://issues.apache.org/jira/browse/PIG-438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13213001#comment-13213001
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Dmitriy V. Ryaboy commented on PIG-438:
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Jonathan, what's the error that is now being thrown in testMissingSemicolon? If
it's a sensible message , we can change the test to that. If it's something
that totally obscures the actual missing semicolon error, we should consider
how to make errors for this kind of case more meaningful.
> Handle realiasing of existing Alias (A=B;)
> -------------------------------------------
>
> Key: PIG-438
> URL: https://issues.apache.org/jira/browse/PIG-438
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.2.0
> Reporter: Pradeep Kamath
> Assignee: Jonathan Coveney
> Priority: Minor
> Fix For: 0.11
>
> Attachments: PIG-438.patch
>
>
> We do not handle re-aliasing of an existing alias - this should be handled
> correctly.
> The following script should work:
> {code}
> a = load 'studenttab10k';
> b = filter a by $1 > '25';
> c = b;
> -- use b
> d = cogroup b by $0, a by $0;
> e = foreach d generate flatten(b), flatten(a);
> dump e
> -- use c
> f = cogroup c by $0, a by $0;
> g = foreach f generate flatten(c), flatten(a);
> dump g;
> {code}
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