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Removing Duplicates From A List

Posted on 2014-01-29
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Last Modified: 2014-01-30
I have a list that i need to remove all Duplicates, if I find any,

example
List
1
1
2
3
3
4
5
5

Goal
2
4

I have open office calc and I have Notepadd++

Thank you in advance.
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Question by:U_S_A
6 Comments
 
LVL 23

Accepted Solution

by:
NBVC earned 500 total points
ID: 39819297
Assuming data in is A2 down.. then in B2 add a helper formula:

=COUNTIF($A$2:$A$3;A2)=1

copied down

Then Select A1:B (last row) and go to Data|Filter|Autofilter.

Filter column B by 0 (False)

Select those rows, right click and delete rows.

Then remove the filter and delete column B
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LVL 11

Expert Comment

by:Angelp1ay
ID: 39819298
Just add a count column next to your list in Excel with the formula:
=COUNTIF(A:A,A2)

Open in new window

Column with Counts
Then apply filters and select only 1 in the count column:
FilterResultExample.xlsx
0
 
LVL 2

Expert Comment

by:bearblack
ID: 39819353
Dim Rw As Double, WS As Worksheet

Sub Keep_Unique()

    Set WS = Sheets("Sheet1")
    
    Rw = WS.Cells(Rows.Count, 1).End(xlUp).Row

    WS.Cells(1, 1).Value = "Values"
    WS.Range(WS.Cells(2, 2), WS.Cells(Rw, 2)).FormulaR1C1 "=IF(OR(RC[-1]=R[-1]C[-1],RC[-1]=R[1]C[-1]),1,0)"
    WS.Range(WS.Cells(1, 1), WS.Cells(1, 2)).AutoFilter Field:=2, Criteria1:=1
    WS.Range(WS.Cells(2, 1), WS.Cells(Rw, 2)).SpecialCells(xlCellTypeVisible).EntireRow.Delete
    WS.Range(WS.Cells(1, 1), WS.Cells(Rw, 2)).AutoFilter
    WS.Columns(2).Delete
    
End Sub

Open in new window

End Sub
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LVL 2

Expert Comment

by:bearblack
ID: 39819368
Sub Keep_Unique()

    Set WS = Sheets("Sheet1")
    
    Rw = WS.Cells(Rows.Count, 1).End(xlUp).Row

    WS.Cells(1, 1).Value = "Values"
    WS.Range(WS.Cells(1, 1), WS.Cells(Rw, 1)).Sort Key1:=WS.Cells(1, 1), Order1:=xlAscending, Header:=xlYes
    WS.Range(WS.Cells(2, 2), WS.Cells(Rw, 2)).FormulaR1C1 = "=IF(OR(RC[-1]=R[-1]C[-1],RC[-1]=R[1]C[-1]),1,0)"
    WS.Range(WS.Cells(1, 1), WS.Cells(1, 2)).AutoFilter Field:=2, Criteria1:=1
    WS.Range(WS.Cells(2, 1), WS.Cells(Rw, 2)).SpecialCells(xlCellTypeVisible).EntireRow.Delete
    WS.Range(WS.Cells(1, 1), WS.Cells(Rw, 2)).AutoFilter
    WS.Columns(2).Delete
    
End Sub

Open in new window

Forgot the line to properly sort
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LVL 22

Expert Comment

by:Dreamboat
ID: 39819407
bearblack, does OO really support VBA? Now I have to go look...

I am assuming OO does not have the remove duplicates feature like Excel 2007 has.

Looks like it's got something, which is described here:

http://www.wikihow.com/Remove-Duplicates-in-Open-Office-Calc
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LVL 2

Expert Comment

by:bearblack
ID: 39819453
Sorry -- Missed the OO part thanks for the catch
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