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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