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RemoveDuplicates.mdb (beginner)

Printed From: Roger's Access Library
Category: Roger's Access Library
Forum Name: Roger's Download Samples
Forum Description: A compendium of Microsoft Access 97 and 2000+ routines, each separated into its own sample database.
Printed Date: 21 Sep 2020 at 9:19pm
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Topic: RemoveDuplicates.mdb (beginner)
Posted By: Roger Carlson
Subject: RemoveDuplicates.mdb (beginner)
Date Posted: 27 Jul 2008 at 11:16pm

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Illustrates a method for removing duplicate records from a table.

1) If the table does not have a primary key, add an autonumber field. It is essential that the table have a unique field. For example, copy Chains table, add a field called ChainID and make it an autonumber and the Primary Key.

2) Create a delete query like qdelRemoveDuplicatesFromChains2: DELETE * FROM Chains2 AS E WHERE E.ChainID > (SELECT MIN(X.ChainID) FROM Chains2 X WHERE E.Chain = X.Chain);

3) Run the delete query/

Access 97 (74 KB): - uploads/5/
Access 2000 (77 KB): - uploads/5/

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