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POIgnore Duplicates and Create New List of Unique Values in different Sheet in Excel
 

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  1. POIgnore Duplicates and Create New List of Unique Values in different Sheet in Excel
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    <p>I am trying to do exactly what was asked in this thread</p> <p><a href="https://stackoverflow.com/questions/13307927/ignore-duplicates-and-create-new-list-of-unique-values-in-excel">Ignore Duplicates and Create New List of Unique Values in Excel</a></p> <p><strong>Except it wasn't answered fully. I would like the output in a different sheet. The question:</strong></p> <p>" I have seen this question asked in various forms numerous times before, but nothing I have tried is working for me.</p> <p>I have a column of values that often appear as duplicates. I need to create a new column, of unique values based on the first column, as follows...</p> <pre><code>Column A Column B a a a b b c c c </code></pre> <p>This Column B will actually need to appear on a different sheet, within the same workbook, so I assume it will need to work with the <code>sheet2!A1</code> style format.</p> <p>I have not had any luck with the Data/Filter menu options as this only seems to work on command. I need column B to update automatically whenever a new value is entered into column A. "</p> <p><strong>The best answer given is:</strong></p> <p>" Basically the formula you need is:</p> <pre><code>B2=INDEX($A$2:$A$20, MATCH(0, COUNTIF($B$1:B1, $A$2:$A$20), 0)) </code></pre> <p>Then press ctrl-shift-enter.</p> <p>Two important things to keep in mind here: The complete list is in cells <code>A2:A20</code>, then this formula has to be pasted in cell <code>B2</code> (Not <code>B1</code> as that will give you circular reference). Secondly this is an array formula, so you need to press ctrl-shift-enter or it will not work correctly. "</p> <p>(This is a useful link: <a href="http://www.get-digital-help.com/2009/03/30/how-to-extract-a-unique-list-and-the-duplicates-in-excel-from-one-column/#unique" rel="nofollow noreferrer">Unique Values</a> )</p> <p><strong>Which gives me:</strong></p> <pre><code> Column A Col B a a a b b c c d c 0 c #N/A c #N/A b #N/A b #N/A a d d </code></pre> <p>But the output is not in a different sheet.</p> <p>I have tried a few variations of: </p> <pre><code>=INDEX(List!A2:A20,MATCH(0, COUNTIF(UniqueList!A2:A20,'List'!A2:A20),0)) </code></pre> <p>Putting $ signs in:</p> <pre><code>=INDEX(List!$A$2:$A$20,MATCH(0, COUNTIF(UniqueList!$A$2:A20,'List'!$A$2:$A$20),0)) </code></pre> <p>Including 'press ctrl-shift-enter'.</p> <p>But I can't figure it out. </p> <p>Please help me take a column from List to UniqueList with only the unique values.</p> <p>Thanks.</p>
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    1. COWhy not copy the list to a new sheet and use Data | Remove Duplicates?
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    2. COThat's what I currently do, but I'd like not to have to do that.
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