× 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.



Yes, how do I exclude the duplicates?

On Thu, Oct 23, 2014 at 12:54 PM, John R. Smith, Jr. <smith5646@xxxxxxxxx>
wrote:

I'm reading his SQL to be that he wants to insert into COMMON_FILE records
that are not already in COMMON_FILE which this UNION does not handle. If
he
has a matching record in COMMON_FILE and FILEA, he will get a duplicate
because you are not excluding what is already there.

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Vernon Hamberg
Sent: Thursday, October 23, 2014 12:50 PM
To: Midrange Systems Technical Discussion
Subject: Re: SQL issue with EXISTS not "working"

If he uses UNIONs even the duplicates in each file will be removed.

On 10/23/2014 11:37 AM, John R. Smith, Jr. wrote:
Are the duplicates records that are already in common_file or are you
getting duplicates from FILE_A? If the latter, try select distinct *
from...

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Darryl Freinkel
Sent: Thursday, October 23, 2014 11:56 AM
To: midrange-l@xxxxxxxxxxxx
Subject: SQL issue with EXISTS not "working"

I need some help on this one.

I am merging 5 company records into 1 file and need to drop any
duplicates.
This is the statement:
INSERT INTO COMMON_FILE
(SELECT * FROM FILE_A A1
WHERE NOT EXISTS (SELECT 1 FROM COMMON_FILE A2 WHERE A1.ITEM =
A2.ITEM))

Problem:
The exists is not working and as a result the insert is inserting
duplicates.

What alternative ways are there to achieve this merge or what mistake
am I not seeing?

I have 5 similar SQL statements to run.

TIA

--
Darryl Freinkel
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
a moment to review the archives at
http://archive.midrange.com/midrange-l.



--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe,
or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a
moment to review the archives at http://archive.midrange.com/midrange-l.


--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.





As an Amazon Associate we earn from qualifying purchases.

This thread ...

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.