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From "Olga Natkovich (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-1112) FLATTEN eliminates the alias
Date Mon, 12 Jul 2010 20:29:50 GMT

     [ https://issues.apache.org/jira/browse/PIG-1112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Olga Natkovich updated PIG-1112:
--------------------------------

    Fix Version/s: 0.9.0

> FLATTEN eliminates the alias
> ----------------------------
>
>                 Key: PIG-1112
>                 URL: https://issues.apache.org/jira/browse/PIG-1112
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Ankur
>            Assignee: Daniel Dai
>             Fix For: 0.9.0
>
>
> If schema for a field of type 'bag' is partially defined then FLATTEN() incorrectly eliminates
the field and throws an error. 
> Consider the following example:-
> A = LOAD 'sample' using PigStorage() as (first:chararray, second:chararray, ladder:bag{});
             
> B = FOREACH A GENERATE first,FLATTEN(ladder) as third,second;                       
           
> C = GROUP B by (first,third);
> This throws the error
>  ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1000: Error during parsing. Invalid alias:
third in {first: chararray,second: chararray}

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