?
Solved

How can I identify a duplicate column using conditional formatting

Posted on 2016-09-05
6
Medium Priority
?
42 Views
Last Modified: 2016-09-25
hi
In the attached file, how can I identify what columns have identical entries all the way down. I've experimented with countif/countifs/sumproduct...but haven't got anything that identifies it. Thanks.
identify_duplicate_columns.xlsx
0
Comment
Question by:agwalsh
  • 3
  • 2
6 Comments
 
LVL 35

Accepted Solution

by:
Rob Henson earned 1000 total points (awarded by participants)
ID: 41784622
In your sample there are multiple duplicates, columns B, F & I and columns E & H.

In cell B11 I have put the following:

=CONCATENATE(B2,B3,B4,B5,B6,B7,B8,B9,B10)

In cell B12 I have put the following:

=COUNTIF($B$11:$J$11,B11)

Copy both across to column J

Any value in row 12 greater than 1 indicates a duplicate column. You can then use cells in row 12 as basis for conditional formatting.
0
 

Author Comment

by:agwalsh
ID: 41784700
Got that working - thank you. :-) So how would I now highlight the columns with values greater than 1. Am attaching the completed file.
EE-identify_duplicate_columns-vers-.xlsx
0
 
LVL 34

Assisted Solution

by:Subodh Tiwari (Neeraj)
Subodh Tiwari (Neeraj) earned 1000 total points (awarded by participants)
ID: 41784721
Based on your latest file, select the range B2:J10 and make a New Rule for conditional formatting using the formula given below and set the format as per your choice.
=B$12>1

Open in new window

EE-identify_duplicate_columns-vers-.xlsx
0
Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

 
LVL 35

Expert Comment

by:Rob Henson
ID: 41784931
I agree with Neeraj's suggestion for applying the Conditional Formatting (CF).

That does beg the question as to whether you want different groups highlighted differently. Simplest way would be to have different CF rules for each of the count values eg 2 = Red, 3 = Orange, 4 = Green.

However, in your sample, lets say Column D was also the same as E & H, you would then have two groups of 3 with duplicate values. Using the above, both groups of 3 would be formatted Orange so still wouldn't be able to determine the grouping.

How far do you need to take this?
0
 
LVL 35

Expert Comment

by:Rob Henson
ID: 41786137
I took it one step further and wrote a UDF for identifying the groups.

See attached.

The UDF is used in row 17 and gives a comment for the matching columns.
EE-identify_duplicate_columns.xlsm
0
 
LVL 34

Expert Comment

by:Subodh Tiwari (Neeraj)
ID: 41814554
The best answer chosen provides the stating point in order to resolve the question.
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

This article describes how you can use Custom Document Properties to store settings and other information in your workbook so that they will be available the next time you open the workbook.
Windows Explorer lets you open cabinet (cab) files like any other folder. In VBA you can easily handle normal files and folders, but opening and indeed creating cabinet files takes a lot more - and that's you'll find here.
Graphs within dashboards are meant to be dynamic, representing data from a period of time that will change each time the dashboard is updated with new data. Rather than update each graph to point to a different set within a static set of data, t…
Excel styles will make formatting consistent and let you apply and change formatting faster. In this tutorial, you'll learn how to use Excel's built-in styles, how to modify styles, and how to create your own. You'll also learn how to use your custo…

589 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