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

Switch to Threaded View
Pig, mail # user - NVL

Copy link to this message
Catherine Miller 2013-05-08, 14:15
I'd like to write a java UDF that functions more or less the same as a SQL
NVL command.  I've been stymied on writing a general function by the fact
that I want it to work on all data types--in particular chararrays and
numeric types.  If I extend EvalFunc<Object> then even if what I return is
a Double, Pig can't use it in a subsequent numeric calculation.

Any suggestions?  Has someone already written this UDF?