[jira] [Updated] (PIG-1693) support project-range expression. (was: There needs to be a way in foreach to indicate "and all the rest of the fields" )

["Thejas M Nair (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-1693?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thejas M Nair updated PIG-1693:
-------------------------------

    Summary: support project-range expression. (was: There needs to be a way in foreach to indicate "and all the rest of the fields" )  (was: There needs to be a way in foreach to indicate "and all the rest of the fields")

> support project-range expression. (was: There needs to be a way in foreach to indicate "and all the rest of the fields" )
> -------------------------------------------------------------------------------------------------------------------------
>
>                 Key: PIG-1693
>                 URL: https://issues.apache.org/jira/browse/PIG-1693
>             Project: Pig
>          Issue Type: New Feature
>          Components: impl
>            Reporter: Alan Gates
>            Assignee: Thejas M Nair
>             Fix For: 0.9.0
>
>
> A common use case we see in Pig is people have many columns in their data and they only want to operate on a few of them.  Consider for example if before storing data with ten columns, the user wants to perform a cast on one column:
> {code}
> ...
> Z = foreach Y generate (int)firstcol, secondcol, thridcol, forthcol, fifthcol, sixthcol, seventhcol, eigthcol, ninethcol, tenthcol;
> store Z into 'output';
> {code}
> Obviously this only gets worse as the user has more columns.  Ideally the above could be transformed to something like:
> {code}
> ...
> Z = foreach Y generate (int)firstcol, "and all the rest";
> store Z into 'output'
> {code}

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