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From "Alok Singh (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-1291) [zebra] Zebra need to support the virtual column 'source_table' for the unsorted table unions also
Date Thu, 11 Mar 2010 01:23:27 GMT
[zebra] Zebra need to support the virtual column 'source_table' for the unsorted table unions
also 
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                 Key: PIG-1291
                 URL: https://issues.apache.org/jira/browse/PIG-1291
             Project: Pig
          Issue Type: New Feature
            Reporter: Alok Singh


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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