× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.


  1.  Home
  2. RPG400-L
  3. January 2007

Re: Rename fields in "I" specs?


On 17/01/2007, at 1:54 AM, David Gibbs wrote:


This is a potentially dumb question ... would renaming a field in an I
spec, of an externally described file, change the way the system handles 
that file?  Possibly making it considered a program described file?
No. What makes a file "externally described" from the system's perspective is the use of DDS (or SQL) to create it. Thus: 

        CRTPF X/Y SRCFILE(*LIBL/QDDSSRC) SRCMBR(Y) ...

results in an externally described file, as does:

        CREATE TABLE ...

but:

        CRTPRF X/Z RCDLEN(132) ...

results in a non-externally described file.

Renaming a field in the program does not alter this distinction.
Defining the file in RPG with an E in the Format column makes it externally-described (and the compiler will look for the external description). Specifying an F in the Format column makes it program-described and the compiler will expect appropriate I and O specs. 

Regards,
Simon Coulter.
--------------------------------------------------------------------
   FlyByNight Software         OS/400, i5/OS Technical Specialists

   http://www.flybynight.com.au/
   Phone: +61 3 9419 0175   Mobile: +61 0411 091 400        /"\
   Fax:   +61 3 9419 0175                                   \ /
                                                             X
                 ASCII Ribbon campaign against HTML E-Mail  / \
--------------------------------------------------------------------

As an Amazon Associate we earn from qualifying purchases.

This thread ...
Follow-Ups:
Replies:
Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.