Dont know about the NVL operator in detail, but seems ternary (bincond)
operator can fit the bill?
On Wed, May 8, 2013 at 7:45 PM, Catherine Miller <[EMAIL PROTECTED]>wrote:
> 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?