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https://issues.apache.org/jira/browse/PIG-2353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13535455#comment-13535455
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Gianmarco De Francisci Morales commented on PIG-2353:
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Hi Jonathan,
Yes, RANK is now an operator and thus a reserved keyword.
We can add it to the release notes.
The parser is definitely a bit rough and could use some reworking, especially
in the error messages, so I am all in for it. Not sure if it is a known issue.
Can you use LOAD or FOREACH as column names?
> RANK function like in SQL
> -------------------------
>
> Key: PIG-2353
> URL: https://issues.apache.org/jira/browse/PIG-2353
> Project: Pig
> Issue Type: New Feature
> Reporter: Gianmarco De Francisci Morales
> Assignee: Allan Avendaño
> Labels: gsoc2012, mentor
> Fix For: 0.11
>
> Attachments: PIG-2353-2, PIG-2353-3.txt, PIG-2353-4.txt,
> PIG-2353-5.txt, PIG2353.patch
>
>
> Implement a function that given a (sorted) bag adds to each tuple a unique,
> increasing identifier without gaps, like what RANK does for SQL.
> This is a candidate project for Google summer of code 2012. More information
> about the program can be found at
> https://cwiki.apache.org/confluence/display/PIG/GSoc2012
> Functionality implemented so far, is available at
> https://reviews.apache.org/r/5523/diff/#index_header
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