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Posted to dev@pig.apache.org by "Cheolsoo Park (JIRA)" <ji...@apache.org> on 2015/04/17 17:44:58 UTC
[jira] [Assigned] (PIG-4511) Add columns to prune from PluckTuple
[ https://issues.apache.org/jira/browse/PIG-4511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Cheolsoo Park reassigned PIG-4511:
----------------------------------
Assignee: Joseph Babcock
Assigning to Joseph.
> Add columns to prune from PluckTuple
> ------------------------------------
>
> Key: PIG-4511
> URL: https://issues.apache.org/jira/browse/PIG-4511
> Project: Pig
> Issue Type: Improvement
> Reporter: Joseph Babcock
> Assignee: Joseph Babcock
> Priority: Minor
> Fix For: 0.14.0
>
>
> Currently pluckTuple returns all columns in relation that match a prefix predicate. This patch allows a variable argument list of column names following the predicate to remove from the alias.
> Example:
> a = load 'a' as (x:int,y:chararray,z:long)
> b = load 'b' as (x:int,y:chararray,z:long)
> c = join a by x, b by x;
> Define pluck PluckTuple('a::','x',z')
> -- returns y from a only
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