× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.



I don't think this plays to SQL's strengths.  You'd be able to do this fairly 
easily with the RPG cycle, using primary/secondary files by matching keys.  RPG 
lets you compare the record format data, so only one test is needed to 
determine whether the primary and secondary records are alike.

The cycle is not really necessary, but it plays nicely with your 
requirements....

JMO,
Eric

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Michael Ryan
Sent: Wednesday, March 07, 2007 11:28 AM
To: Midrange Systems Technical Discussion
Subject: Using SQL for File Record Comparison


Does this make sense? Is there a better way? I'm trying to find out if
two files are the same. Here's my SQL statement:

SELECT count(*) FROM firstlib/mhrdclp a, secondlib/mhrdclp b where
a.mdvnda = b.mdvnda and a.mdmdl = b.mdmdl and (a.mddual <> b.mddual
or a.MDCMFRT <> b.MDCMFRT or a.MDLP <> b.MDLP or a.MDSF <> b.MDSF)

File MHRDCLP has the following fields:
mdvnda
mdmdl
mddual
mdcmfrt
mdlp
mdsf

I want to see if I have any records that match mdvnda and mdmdl have
any of the other four fields different.

Thanks!

As an Amazon Associate we earn from qualifying purchases.

This thread ...

Follow-Ups:
Replies:

Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.