[jira] [Updated] (PIG-3083) Introduce new syntax that let's you project just the columns that come from a given :: prefix

["Rohini Palaniswamy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-3083?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rohini Palaniswamy updated PIG-3083:
------------------------------------
    Fix Version/s:     (was: 0.16.0)
                   0.17.0

> Introduce new syntax that let's you project just the columns that come from a given :: prefix
> ---------------------------------------------------------------------------------------------
>
>                 Key: PIG-3083
>                 URL: https://issues.apache.org/jira/browse/PIG-3083
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.12.0
>            Reporter: Jonathan Coveney
>              Labels: PIG-3078
>             Fix For: 0.17.0
>
>         Attachments: pig_jira_aguin_3083.patch
>
>
> This is basically a more refined approach than PIG-3078, but it is also more work. That JIRA is more of a stopgap until we do something like this.
> The idea would be to support something like the following:
> a = load 'a' as (x,y,z);
> b = load 'b'  as (x,y,z);
> c = join a by x, b by x;
> d = foreach c generate a::*;
> Obviously this is useful for any case where you have relations with columns with various prefixes.



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