asked on

Create list of unique values/strings from one sheet to another

I have 40K rows in sheet1 column C but only ~75 unique values/strings in that column.

I need the unique list to be copied to Sheet2 row 1.

I would prefer not to copy all/sort by unique, rather copy only unique values, ie. look in sheet1 column C, get unique values and copy to sheet2, starting at column A row 2.

Has to be VBA (macro).

Thanks in Advance,

swjtx99

aikimark

you can use the advancedfilter to do this. Click the Unique Values checkbox.

Professor J

Do you want vba or dynamic formula?

swjtx99

ASKER

It needs to be VBA. I can do this already with advancedfilter/unique values and with a dynamic formula but I am trying to automate the process.

Attached is an example File. Sheet1 is an example data set and sheet2 is what I wantExample2.xlsx the VBA to create.

SOLUTION

aikimark

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Professor J

Hello,

here is the fast and short code.

Sub Extractunique()
    Dim a, e
    With Sheets("Sheet1")
        a = .Range("C1", .Range("C" & Rows.Count).End(xlUp)).Value
    End With
    With CreateObject("Scripting.Dictionary")
        .CompareMOde = 1
        For Each e In a
            If Not IsEmpty(e) Then .Item(e) = Empty
        Next
        Sheets("sheet2").Range("A2", Columns("A").SpecialCells(xlCellTypeLastCell)).ClearContents
        Sheets("sheet2").Range("A2").Resize(.Count).Value = Application.Transpose(.keys)
    End With
End Sub

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aikimark

@ProfessorJimJam

With a dictionary object, you should use its .EXISTS() method.

ASKER CERTIFIED SOLUTION

Professor J

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swjtx99

ASKER

Hi,

Thanks to you both. ProfessorJimJam's worked better, however the transpose at the end doesn't seem to work.

Regards,

swjtx99

aikimark

@swjtx99

doesn't seem to work

Which transpose doesn't work?

You should work with the experts until you have a working solution. Should we reopen the question for further dialog?

Professor J

@swjtx99

what do you mean the transpose does not work?

check your original question. your question do not state to transpose the the list.

if you are referring to line 12 of the code Application.Transpose(.keys)

this is not the Transpose you use in built excel function. This Transpose has a different functionality.

try to to remove it and instead just put Sheets("sheet2").Range("A2").Resize(.Count).Value = .keys

then see you get a wrong result and this is the power of Application.Transpose(.keys) that make the code do what you asked for.

if you are interested to learn how to use Dictionary-Class-in-VBA then in Experts Exchange forum, there is a very good article written by Patrick Matthews

check it here
https://www.experts-exchange.com/Software/Office_Productivity/Office_Suites/MS_Office/A_3391-Using-the-Dictionary-Class-in-VBA.html

i believe what you got what you asked for , in this thread. if you have any other question. you may need to open a new question.

regards,

Professor