Posted to microsoft.public.excel.misc
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deduplicate data in excel
Dave
Thanks so very much. It works a beauty!
Much appreciated
Julie Melbourne
"Dave Peterson" wrote:
First, that's not the formula you want to use. But if you just wanted to check
to see if all the entries were unique, you'd change range1 to A1:A100 (or some
other range).
I think the formula you want (if your data is in A1:Axx) is this:
=if(countif($a$1:a1,a1)=1,"First Occurrence","Duplicate")
Then the first occurrence is marked differently.
If you're looking for just any old duplicate.
=if(countif(a:a,a1)=1,"unique","duplicate")
And drag done the column.
Julie Melbourne wrote:
Dave
I tried the following formula in a test worksheet using one column named
Range with same data as displayed on the website
=IF(MAX(COUNTIF(Range1,Range1))1,"Duplicates","No Duplicates")
Then I pressed CTRL+Shift+Enter
I get the following result
#NAME?
Any ideas what I am doing wrong?
Much appreciate your help
"Dave Peterson" wrote:
What formula did you use?
Where's your data?
I've never had trouble with the formulas.
Julie Melbourne wrote:
Thanks Dave
I have looked at this site, but cannot get the formula to work?
Must be doing something wrong. Have you tried it?
Do you have a working spreadsheet wtih this formula?
Thanks for you help
Julie Melbourne
"Dave Peterson" wrote:
You may want to read some of Chip Pearson's techniques for dealing with
duplicates:
http://www.cpearson.com/excel/duplicat.htm
Julie Melbourne wrote:
How do I deduplicate data in Excel. I have a large database of names and
addresses which I want to check to duplication
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Dave Peterson
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Dave Peterson
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Dave Peterson
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