RE: Using SQL for File Record Comparison

["Richard Casey" <casey_r@xxxxxxxxxxxxxxxx>]

Something else to watch for would be records that are in FILEA, but NOT in
FILEB; and vice versa. You could get a count of those with exception joins.

# of records in FILEA with no matching records in FILEB
SELECT count(*)
FROM firstlib/mhrdclp a
EXCEPTION JOIN secondlib/mhrdclp b
ON a.mdvnda = b.mdvnda and a.mdmdl = b.mdmdl

# of records in FILEB with no matching records in FILEA
SELECT count(*)
FROM secondlib/mhrdclp b
EXCEPTION JOIN firstlib/mhrdclp a
ON a.mdvnda = b.mdvnda and a.mdmdl = b.mdmdl

Have fun!
Richard


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Michael Ryan
Sent: Wednesday, March 07, 2007 12:42 PM
To: Midrange Systems Technical Discussion
Subject: Re: Using SQL for File Record Comparison


Yup...I understand what you mean and I agree. The records in each file
are unique by mdvnda and mdmdl...there is only one record in each file
with those unique values.

On 3/7/07, Alan Shore <AlanShore@xxxxxxxx> wrote:
> Be careful with this - I think
> Are the records unique, in the sense of mdvnda & mdmdl
> If these are NOT unique then you wont have a one to one comparison from 1
> file to the other file and my thinking is that record 1 on FILEA will
equal
> record 1 on FILEB, but record 2, 3, 4 & 5 on FILEB has the same mdvnda &
> mdmdl as record 1 on FILEB, therefore record 1 on FILEA will not equal
> records 2, 3, 4, & 5 on FILEB. Therefore the count will be 4.
>
> Now - I've just re-read what I wrote. God I hope that makes sense.
>
>
>
> Alan Shore
>
> NBTY, Inc
> (631) 244-2000 ext. 5019
> AShore@xxxxxxxx
>
> midrange-l-bounces@xxxxxxxxxxxx wrote on 03/07/2007 12:27:43 PM:
>
> > 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!

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.7/713 - Release Date: 3/7/2007
9:24 AM