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Pig >> mail # user >> Sort sub-data by second field


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Roberto Maestre 2012-04-12, 14:15
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Re: Sort sub-data by second field
Hi,

grunt> describe c
c: {group: int,a: {(f2: int,f3: int)}}

grunt> dump c
(1,{(1,3),(2,4),(3,2),(4,1)})
grunt> d = foreach c {
    a1 = order a by f3 desc;
    generate group, a1;
}

grunt> dump d
(1,{(2,4),(1,3),(3,2),(4,1)})

Cheers,
--
Gianmarco

On Thu, Apr 12, 2012 at 16:15, Roberto Maestre <
[EMAIL PROTECTED]> wrote:

> Hi!
> I have this data :
>
> (1,{(1,3),(2,4),(3,2),(4,1)})
>
> so ... can i order the second column by the second field ? .. getting this
> result:
>
> (1,{(2,4),(1,3),(3,2),(4,1)})
>
> Thank you in advanced.
> Best regards.
>
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB