Home | About | Sematext search-lucene.com search-hadoop.com
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
 Search Hadoop and all its subprojects:

Switch to Threaded View
Pig >> mail # user >> COALESCE UDF?


Copy link to this message
-
Re: COALESCE UDF?
For my two cents' worth I agree, it's nicer to have coalesce than the conditional operator.

On Sep 4, 2013, at 8:50 AM, Something Something <[EMAIL PROTECTED]> wrote:

> What if you've 10 fields?
>
>
> On Wed, Sep 4, 2013 at 4:30 AM, Ruslan Al-Fakikh <[EMAIL PROTECTED]>wrote:
>
>> 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