Identifying Duplicates In A List Using Conditional Formatting

Nov 30, 2009

I would like to identify duplicates in a list using conditional formatting in Excel 2007.

I have tried choosing to identify duplicates using the formula that I have found on many threads throughout the message board:


This function works up to 15 characters in a cell, but Excel seems to be treating all digits after the first 15 as the same, resulting in a "fuzzy match" where I want an exact match. Many of the values in my list are 18 characters long, in text format to prevent rounding.

I've noticed that Excel treats the 18-characters values the same way when sorting; for example, it treats these two values as the same:


Is there a way to force Excel to examine those last four digits for the purpose of sorting & identifying duplicates?

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Identifying Duplicates In List

Aug 6, 2009

Here is the deal I have 4 columns. Each line gives you the following information:
The Id is the record number, Code_Name is a code for each Fox in the study, date and area is a sub area in a bigger grid. Basically I have an area divided by squares and every time a marked fox enters in one of my squares a new line in the data is created. What I wonít to know is if a fox when in my area of study will return to the same squares or not.












What Iím trying to achieve is a 5th column were ill get a logical value of TRUE or FALSE if, for each fox in the next available record a fox went back to the same square or not.
So if you check for the fox RRR1 I have 2 records one in 2 of January in area 1A1 and a second in 7 of January in the same area. For the Fox BBB1 you will see that she was always in different areas and for CCC1 she only came back to one square.

The problem is I have over 400 foxís and 12000 records and Iím trying to get a way of doing it automatically.

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Jul 10, 2009

I need to create a formula that will look at a p/n find its match and add the value from all matching p/n together. After this is done, all of the line items that matched I need them to turn red. But I do not want the first p/n to turn red. It is better explained in my example.

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Mar 19, 2009

My background is many years of Access VBA. From time to time, I'm called upon to work in Excel. I am not that familiar with the library.

I'd like to know if it is possible to do the following:

Examine Column 1 and, for each like value, examine Columns 2 and 3 for duplicate values. Highlight or conditionally format the duplicates in Columns 2 and 3 (again, for each like value in Column 1).

Being that I've coded Access applications for quite some time, I am sure it can be done...I just don't yet know exactly how. I've searched the archive for and found some examples which deal with duplicate data, but have found none yet which quite fit my scenario.

I've found sample code which enforces rules and conditionally formats cells when new data is added. It works fine and I understand it. I'm hoping the kind soul who might help me with the above can explain how I might do both things on the code page.

I assume the Worksheet_Change Event would contain the "enforcement" code.

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Conditional Formatting - Duplicates

Aug 4, 2009

Below is some sample data

Column A is the START date/time

Column B is the END date/time

What I'm looking at doing is high lighting any cell where the START and END dates clash.

Is this possible via CF?

If possible highlight the START cells where a clash occurs.

AB1STARTEND2Fri 03/07/2009 11:30 AMFri 03/07/2009 4:30 PM3Wed 08/07/2009 9:30 AMWed 08/07/2009 10:30 AM4Fri 10/07/2009 1:30 PMFri 10/07/2009 1:00 PM5Wed 08/07/2009 9:00 AMWed 08/07/2009 11:30 AM6Tue 07/07/2009 11:30 AMTue 07/07/2009 1:00 PM7Thu 09/07/2009 11:30 AMThu 09/07/2009 1:30 PM8Tue 07/07/2009 1:30 PMTue 07/07/2009 4:30 PM

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Conditional Formatting For Duplicates

Jul 29, 2006

I can't follow the directions on to make the conditional formatting work. The formula they say to use is = COUNTIF($A$1:$A$100,A1)>1. I've changed the range to read=COUNTIF ($F$10:$G$999,F10)>1 and have applied a format change of the text color. It is obvious I have duplicates but they are not changing color. I have the range highlighted before I go to conditional formatting.

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Conditional Formatting Highlight The Duplicates

Oct 4, 2008

I have a worksheet that has times based on 7 minute intervals. If I post 10:37 AM in cell b5 then again in cell b6 I would like b6 to highlight.

I'm trying to use countif($b$3:$b$15,b2)>1 to highlight duplicate times in column B. For some reason it will not work for me. Should I use something different?

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May 26, 2007

I know it can be done cause I've used it before but I can't seem to make it work this time. I want to use the conditional formatting to compare two ranges of cells within one worksheet I know it's something like =match(A2:C12) the two ranges are sitting one on top of the other. . .

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Feb 25, 2014

I use the conditional formatting of duplicates within a column quite often. Now I am trying to highlight duplicates based on multiple cells in the same row. I can't seem to get a formula to make that work. I have four cells in separate columns but the same row, for example H2:K2, H3:K3, H4:K4, etc. I would like to highlight the four cells in that row if there is a duplicate of all four cells in another row. So if one, two or three cells are duplicates in the same column I do not want to highlight any of the cells, it should only highlight the group of four cells if all four cells are identical in another row. Pretty much the same way the default highlight duplicates works, just the value is spread across four cells.

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Aug 13, 2009

Conditional formatting duplicates across multiple sheets. I have been using the formula

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Feb 20, 2012

Using Excel 2007 and conditional formatting, how would I find duplicates across all fields in the table, similar to the "remove duplicates" tool that in default mode selects all the fields or offers the option to select fields of choice. I need to look at all the fields.

I've tried concatenation, but only with a limited number of fields; larger amounts slow the process to a crawl. If my table is 10,000 records with 15 fields, what process would I use to highlight the duplicates. How about something in VBA?

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Feb 9, 2010

I have attached a sample sheet which deals with property sales data, in reference to a two-part question.

1. If the row has two, or more, rows share the same value in column 'E', it needs to be identified with a 'Y' in Column G. In looking through old threads, this seems possible, though I could not find and answer I could 'bend' to work. If this is possible, can the following be included?

2. If two or more rows share the same value in column 'E', list the identifiers (value in Column A) for the others in Column H, separated by commas "," or slashes (preferred) "/".
"00370600000700 'NICHOLLS JOHN W & CARLA R 11/27/2000 85000 '260647 W Y '00370600000800" and
"00370600000800 'NICHOLLS JOHN W & CARLA R 11/27/2000 85000 '260647 W Y '00370600000700" or
"'00370500000801 'FRAHM FREDERICK/ERIK/KRYSTYNA 06/17/2004 110000 '288904W Y '00370500000802/'00370500000803"

The sample sheet attached includes 26 rows of data with several 'doubles' and one 'triple' 'duplicates'.

Please note that in the 'real' file, it has slightly less than 200,000 rows and I have seen 'dupicates' up to 40 with the same value in Column 'E'

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Jul 18, 2012

I have organized account numbers from two systems onto a spreadsheet, with numbers from System 1 arrayed in Column A and numbers from System 2 arrayed in Column B. I need to evaluate the numbers in both columns and isolate the numbers that are NOT DUPLICATES across the two systems (Columns A and B) and return a list of non-duplicate numbers in Column C. Here is what the table would look like:

System 1
System 2


[Code] .......

What is the best approach to use?

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Feb 12, 2014

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Feb 11, 2014

I am involved in a software conversion that is taking 4 full time folks over 5 weeks to clean up and assign an alpha-numeric sequential number to each vendor, client. Each scrubber is reviewing an excel spreadsheet containing the names, addresses, FID, telephone, etc. of our vendors and customers. This information is being pulled from 2 separate sources. We are assigning a BP # to the main office location and not retiring that one. then we go on to identifying the dups. All dups get a Y to be retired, but if they have a different address then the main one, we place a Y to bring that address over under that BP#.

Ultimately, we end up with 2 systems combined into one dumping all old numbers assigned and giving each vendors, customers, etc. a new BP# that may have muliptple addresses.

How can we assign a alpha numeric number without going through each individual line...over 900,000 of them to do. Key is to identify duplicate addresses and duplicate names. Some names might be RK Electrical or Robert King Electrical but the address will be duplicated usually.

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Feb 14, 2010

Is there any way that I can use conditional formatting and instead of highlighting top 10% to have them displayed as a new list.

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Jul 16, 2007

I have a column of information. The first cell has the record number. Then there are criteria the record must meet. If any of the cells have N for nonCompliant, i would like for the record number to change colors. If it were only one citeria, i think i know how to do that, but because there are as many as 10 I'm not sure how to make it change colors for all ten unless i do it one cell at a time.

Also there are several thousand columns on different worksheets, how do i apply the conditions to each column without doing it manually?

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Jan 14, 2013

I am wanting to highlight the ID's on list 2 which don't appear on list 1 and vice versa highlight the ID's on list 1 which don't appear on list 2.

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Mar 6, 2013

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attach file


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Oct 15, 2012

I have 3 rows with numbers across several columns, each cell holding one number only. For example:

R1: 1101 - 1102 - 1103 - 1104 - etc.
R2: 2101 - 2102 - 2103 - 2104 - etc.
R3: 3101 - 3102 - 3103 - 3104 - etc.

A little further down I am having a list where the end user will write down the exact same number. Once the same number has been written into the list, I would like the number shown in the top rows (row 1 to 3) to be highlighted in green, basically telling the user that the number has been entered into the list below and is ok now.

How can I manage this via conditional formatting?

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In one column I have a drop down list of a dozen different initials with conditional formatting on those cells. I would also like to conditionally format an adjacent text string column based on those initials, but don't want to set up a dozen rules on each cell, one by one. If I set up the top cell with the correct rules I cannot fill the formatting in because the formula is not updated on a row by row basis, but en bloc for the range.

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I have a worksheet with a lot of different conditions applied to a lot of cells. I'd like to do some housekeeping, but to do that, I would like a clear and complete list of all cells that have conditional formats attached to them, and what the formula/criteria is for applying said format. I don't even care what the formatting is, but that would be nice too.

So, when I go to my "Conditional Formatting" screen, I get something like:

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Oct 3, 2012

As far as I can tell Conditional Formatting will not work for this problem.

What I need now is some code to colour the rows in the data sheet ("Standards_Data"), so some other code (which is working fine) can then colour data points on a multiple graphs (which will be on the "Graphs" sheet). I've played around with as much code as I can find but nothing has the flexibility that I need or doesn't seem to work at all.

The idea is that users can adjust the colours using the Column A on the "Graphs" sheet to best highlight certain things. Also this list could then be edited as old Standard ID's become redundant and new ones come on line.

So in a nutshell: Colour rows in "Standard_Data" based on value of Standard ID (Column 4) according to the corresponding colour found in the list in the "Graphs" sheet.

I've attached a trimmed down version of the workbook.

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I have a list of variables created by a user like this:

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Band2 09:00 15:59
Band3 16:00 17:59
Band4 18:00 22:30
Band5 22:31 24:29
Band6 24:30 05:59

Seperately I have data from a third party like this:

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19/05/08 02:15 1
20/05/08 07:14 5
20/05/08 21:36 15
20/05/08 25:43 1
21/05/08 19:15 15
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