RE: Using SQL to check for duplicate records

["Booth Martin" <Booth@xxxxxxxxxxxx>]

ahhhhh the joys of using RPG the way it was intended...

Such an easy problem with an L1 break and using the  INFDS for the
input/primary file.
 
 
 
---------------------------------------------------------
Booth Martin   http://www.MartinVT.com
Booth@xxxxxxxxxxxx
---------------------------------------------------------
 
-------Original Message-------
 
From: Midrange Systems Technical Discussion
Date: 1/6/2004 2:40:01 PM
To: Midrange Systems Technical Discussion
Subject: RE: Using SQL to check for duplicate records
 
Gord,
 
That solution doesn't display the RRN's of the duplicates.
 
Enforcing RI programmatically is a joke.  When you have to merge
divisions, etc, you're going to have file maintenance outside of the one
5250 file maintenance program.
 
Rob Berendt
--
"All creatures will make merry... under pain of death."
-Ming the Merciless (Flash Gordon)
 
 
 
 
Gord Royle <GRoyle@xxxxxxxx>
Sent by: midrange-l-bounces@xxxxxxxxxxxx
01/06/2004 01:30 PM
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Subject
RE: Using SQL to check for duplicate records
 
 
 
 
 
 
Hi Rob
 
I've done this before (on BPCS).
 
Select iprod, count(iprod) from lib.iim
group by iprod
having count(iprod) > 1
 
Yhis is fast !!!
 
But - I'm curious. I know BPCS inforces RI programatically - so - how can
you have duplicates in IIM? Don't tell me - Someone went in outside of
BPCS
control <BG>.
 
Gord
 
-----Original Message-----
From: Fisher, Don [mailto:Dfisher@xxxxxxxxxxxxxxxxx]
Sent: Tuesday, January 06, 2004 11:06 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Using SQL to check for duplicate records
 
 
I don't know if it's more efficient, but try:
SELECT IPROD FROM IIM group by IPROD
    Having count(*) > 1
 
That will give you the IPROD values that are duplicated.  If you want the
specific record numbers, you'll have to use the result set to join back to
IIM.
 
Hope that helps.
 
Donald R. Fisher, III
Project Manager
Roomstore Furniture Company
(804) 784-7600 extension 2124
DFisher@xxxxxxxxxxxxx
 
<clip>
Is there a more efficient way, using SQL, to check for duplicate records
than the following?
SELECT A.IPROD, RRN(A) FROM IIM A
WHERE A.IPROD IN (
  SELECT B.IPROD FROM IIM B
  GROUP BY B.IPROD
  HAVING COUNT(*) > 1)
<clip>
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