Re: How to return null on a PI

> Buck, Since I am using this in a UDF I am not interested in an additional
> parameter for in/out processing.  Can be done, but really complicates
> where I use it.  I understand what you are saying about the C method.
> However doesn't system() export a separate variable?

Not all C library functions directly return rc.  Some return the a value and
set errno.  We RPG folk could do the equivalent with EXPORT and IMPORT, but
I haven't any idea how that could percolate up to a UDF (how the SQL
statement would do the IMPORT half, that is.)

Sounds like you are stuck with a work around where the UDF returns a special
value.  Perhaps all digits?
    --buck