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https://issues.apache.org/jira/browse/PIG-1291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yan Zhou updated PIG-1291:
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        Fix Version/s: 0.7.0
    Affects Version/s: 0.8.0
                       0.7.0
               Status: Patch Available  (was: Open)

> [zebra] Zebra need to support the virtual column 'source_table' for the 
> unsorted table unions also 
> ---------------------------------------------------------------------------------------------------
>
>                 Key: PIG-1291
>                 URL: https://issues.apache.org/jira/browse/PIG-1291
>             Project: Pig
>          Issue Type: New Feature
>    Affects Versions: 0.7.0, 0.8.0
>            Reporter: Alok Singh
>             Fix For: 0.7.0, 0.8.0
>
>         Attachments: PIG-1291.patch, PIG-1291.patch
>
>
> In Pig contrib project zebra,
>  When user do the union of the sorted tables, the resulting table contains a 
> virtual column called  'source_table'.
> Which allows user to know the original table name from where the content of 
> the row of the result table is coming from.
> This feature is also very useful for the case when the input tables are not 
> sorted.
> Based on the discussion with the zebra dev team, it should be easy to 
> implement.
> I am filing this enhancemnet jira for zebra.
> Alok

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