RE: Using OPNQRYF in place of a LF

>I have a file that I need to chain to during a program. 
>The file doesn't have a key field, so I am trying to 
>decide if I should create a Logical file over the file, 
>or should I use OPNQRYF. I want to use OPNQRYF, but
>how do I can't get the RPG program to compile since 
>the file that the program is using isn't keyed. 
>Any suggestions?

My general breakdown goes like this:  If you need fast response time, or the
same static access is used more than a dozen times a shift, build the
logical.  If it's an infrequently used access path and is for a report, I'll
use OPNQRYF.  The exceptions to this occur when somebody wants a dynamic
select/omit and ordering for an interactive job.  Then I'll use OPNQRYF AND
build a logical.

If the file isn't keyed then you'll have to create a format file that is, so
the RPG program will recognise the key you'll build at runtime with OPNQRYF.
  --buck