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Pig >> mail # user >> COALESCE UDF?


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Re: COALESCE UDF?
Hi,

I think you could mimic it with an expression like this:
b = foreach a generate ((field1 is null) ? ((field2 is null) ? null :
field2) : field1);

Hope that helps,
Ruslan
On Wed, Sep 4, 2013 at 9:50 AM, Something Something <
[EMAIL PROTECTED]> wrote:

> Is there a UDF in Piggybank (or somewhere) that will mimic functionality of
> the COALESCE function in MySQL:
>
>
> http://www.w3resource.com/mysql/comparision-functions-and-operators/coalesce-function.php
>
> I know it will be very (very) easy to write this, but just don't want to
> create one if one already exists.  I looked but couldn't find one.
>
> Please let me know.  Thanks.
>
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