?
Solved

Find duplicates by comparing 5 fields in a query

Posted on 2011-09-13
4
Medium Priority
?
240 Views
Last Modified: 2012-05-12
Hi experts!  

I am working in Access 2010.

I have a query that has these fields: (please see screen shot).

The goal is to compare records in this query based on four fields and dump the duplicate record based on the value of a fifth field:

If ALL of the below four fields are identical....

[RequestDate]
[Company]
[Product]
[Quantity]

then....
the fifth field
[Source]
determines which record will be dropped and which record will stay of the duplicate records.

The [Source] field will always have one of two entries: Susie OR FMS.  FMS should be the winner in all duplicate records.

I hope there is a simple way to solve this!

Thank you.
Untitled.png
0
Comment
Question by:Sashaski
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 42

Expert Comment

by:dqmq
ID: 36532052
Delete * from yourtable T1
  where T1.Source <> "FMS"
  and exists
     (Select * from yourtable T2 where
             t1.RequestDate = t2.requestdate
       and t1.Company = t2.company
       and t1.Product = T2.product
       and t1.Quantity = T2.quantity
       and t2.Source = "FMS"
      )




Select ID from yourtable where source <> "FMS"
0
 
LVL 42

Accepted Solution

by:
dqmq earned 2000 total points
ID: 36532061
pls ignore residual select at end of prev answer
0
 

Author Comment

by:Sashaski
ID: 36532236
Thank you dgmg...I tried the code above, it filtered my query to just show the "FMS" records.  I dropped the last select statement. so the code is:


Delete * from yourtable T1
  where T1.Source <> "FMS"
  and exists
     (Select * from yourtable T2 where
             t1.RequestDate = t2.requestdate
       and t1.Company = t2.company
       and t1.Product = T2.product
       and t1.Quantity = T2.quantity
       and t2.Source = "FMS"
      )
0
 

Author Comment

by:Sashaski
ID: 36532247
My bad, that worked! Thank you so much!

0

Featured Post

Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In earlier versions of Windows (XP and before), you could drag a database to the taskbar, where it would appear as a taskbar icon to open that database.  This article shows how to recreate this functionality in Windows 7 through 10.
You need to know the location of the Office templates folder, so that when you create new templates, they are saved to that location, and thus are available for selection when creating new documents.  The steps to find the Templates folder path are …
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question