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Hi Bruce
Re-use deleted records WILL use the rrn of a deleted record
Re-orgs MAY change the relative record number of records in the file, depending on how the re-org is run

Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
‘If you're going through hell, keep going.’
Winston Churchill


-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxxxxxxxx] On Behalf Of Bruce Vining
Sent: Friday, July 10, 2020 5:13 PM
To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: [EXTERNAL] Re: Quick question on file behavior

Maybe I'm getting in over my head, but reorgs and deleted records are not going to change RRN sequencing. It can certainly change the sequence of records read (RRNs change), but not the underlying sequencing implementation.

On Fri, Jul 10, 2020 at 5:11 PM Alan Shore via RPG400-L < rpg400-l@xxxxxxxxxxxxxxxxxx> wrote:

Has the file ever been re-orged (RGZPFM)?
How was it re-orged is then the question

Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
‘If you're going through hell, keep going.’
Winston Churchill


-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxxxxxxxx] On Behalf
Of Jim Oberholtzer
Sent: Friday, July 10, 2020 5:09 PM
To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: [EXTERNAL] Re: Quick question on file behavior

Is reuse deleted records turned on, if so I highly doubt it.

What about a logical?

Jim Oberholtzer
Agile Technology Architects



On Jul 10, 2020, at 4:02 PM, James H. H. Lampert <
jamesl@xxxxxxxxxxxxxxxxx> wrote:

Ladies and Gentlemen:

I have a file that is *not* uniquely keyed (the designer is
apparently
ideologically opposed to allowing the OS to enforce uniqueness).

In my general observations, it has always been my *impression* that
if
I'm going through a file in keyed sequence, via native RLA, records
with duplicate keys are presented in RRN sequence. But I am not
certain of that (and conversely, everything I've read about SQL-only
databases like MySQL says that the sequence in which records with the
same key appear in a result-set is neither predictible nor even necessarily repeatable).

But this is strictly DB2/400, via native RLA: If I am "Riding The
RPG
Cycle" through the file, and I hit two or more records with the same
key,
*can* I reasonably expect them to appear in ascending RRN sequence?

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JHHL
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--
Thanks and Regards,
Bruce
931-505-1915
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