Solved

Identifying duplicate entries in a list

Posted on 2004-09-03
5
249 Views
Last Modified: 2013-12-18
I have a field on a form which is a list of names, and need to check to see if there are any duplicates. I want to do this using a separate calculated field which will list any entries that appear more than once in the source field.

How do I do this using a formula. My best guess is to use the @Unique function and then compare this to the original list, but I'm not if this is possible.

Help would be appreciated!

0
Comment
Question by:mrt1
5 Comments
 
LVL 15

Expert Comment

by:Bozzie4
ID: 11974037
Why would you bother to see which are the duplicates ?
Just put in a Translation formula, to get rid of the duplicates :

@unique(TheField)

cheers,

tom
0
 
LVL 46

Expert Comment

by:Sjef Bosman
ID: 11974184
Or, if you really want to know, use
    @If(@Elements(TheField)=@Elements(@Unique(TheField)); @Success; @Failure("..."))
0
 
LVL 24

Expert Comment

by:HemanthaKumar
ID: 11976162
Here is the formula to extract duplicates from a List

List := FIELD_NAME_HERE;
num := "0" : "1" : "2" : "3" : "4" : "5" : "6" : "7" : "8" : "9";
idList := @Subset( num*+ num; @Elements(List));
tmp1 := @Unique(@Replace(List; List; idList));
tmp2 := @Trim(@Replace(idList; tmp1; ""));
@Replace(tmp2; idList; List);

~Hemanth
0
 
LVL 2

Author Comment

by:mrt1
ID: 12008206
My 'list' is actually a concatenation of several list fields - that is why I'm looking for duplicates. I need to return the duplicates themselves - not just a boolean value. This calculated field is going to be displayed on the form as a validation warning -so that users are made aware of the duplicates.

Isn't there a more elegant way of doing it that having to hard code a list of numbers ( There isn't an upper limit to the number of entries in the list, so I don't really want to do this).
I could probably do this using Lotus script, but I just thought it would be simpler using a formula.
0
 
LVL 24

Accepted Solution

by:
HemanthaKumar earned 200 total points
ID: 12008274
That is what my formula does.. it returns the duplicates...

list of numbers can be expanded upto any value.. right now it give 100 values.. but it can be increased by appending *+ num to the existing one

eg:
num*+ num*+ num will give 1000 values, num*+ num*+ num*+ num yields 10000 values
0

Featured Post

Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Lotus notes email code 6 114
Connect SQL Server from Lotus Domino Application 7 347
Domino Server 2 76
DNS error assumed 8 59
You’ve got a lotus Domino web server, and you have been told that “leverage browser caching” is a must do. This means that we have to tell the browser everywhere in the web to use cache. In other words, we set (and send) an expiration date in the HT…
For beginners of Lotus Notes user this is important to know about the types of files and their location supported by IBM Notes. Mostly users are unaware about how many file types are created and what their usages are. This Article is fully dedicated…
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

770 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