RE: Finding gaps in a sequence of invoice numbers using SQL

Note that this probably will _NOT_ give you what you are looking for.

If # 7,8,9 are missing, the only one you'll get returned is 7.

Charles Wilt
--
Software Engineer
CINTAS Corporation - IT 92B
513.701.1307

wiltc@xxxxxxxxxx

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-
bounces@xxxxxxxxxxxx] On Behalf Of Jonathan Mason
Sent: Thursday, August 07, 2008 11:02 AM
To: Midrange Systems Technical Discussion
Subject: Re: Finding gaps in a sequence of invoice numbers using SQL

Not to worry, I managed it with the help of the News/400 Desktop Guide
to SQL and came up with:

SELECT A.INVNO
FROM INVHDR AS A
EXCEPTION JOIN INVHDR AS B
ON A.INVNO = B.INVNO + 1

I'm so impressed, now it's time to go home.

All the best

Jonathan

Jonathan Mason wrote:

Hi Everyone

One of our customers has an Invoice Header file that currently has
815,000 records and is growing daily and I need to try and identify any
blocks of missing numbers. I could do this quite easily with a simple
RPG (or even CL!) program, but would have to go through the full change
management rules to get it approved, tested, system tested, user tested,
deployed, etc, and there isn't the time.

Is it possible using SQL to generate a list of invoice numbers where the
next invoice number doesn't exist. For example, if invoice numbers 1,
2, 3, 6, 7, 11, 12 and 15 existed the list would show 3, 7, 12 and 15
(although I'm not too worried about the last one).

I'm doubting there is, but figured I would ask.

Thanks

Jonathan

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