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Removing Duplicate Cells

I can't tell you the number of times I have received raw data from some program or from some person, and the first thing I need to do is remove duplicates from the list. If you find yourself in the same situation, the following macro will be a huge help:

Sub DelDups()
    Dim rngSrc As Range
    Dim NumRows As Integer
    Dim ThisRow As Integer
    Dim ThatRow As Integer
    Dim ThisCol As Integer
    Dim J As Integer, K As Integer

    Application.ScreenUpdating = False
    Set rngSrc = ActiveSheet.Range(ActiveWindow.Selection.Address)

    NumRows = rngSrc.Rows.Count
    ThisRow = rngSrc.Row
    ThatRow = ThisRow + NumRows - 1
    ThisCol = rngSrc.Column

    'Start wiping out duplicates
    For J = ThisRow To (ThatRow - 1)
        If Cells(J, ThisCol) > "" Then
            For K = (J + 1) To ThatRow
                If Cells(J, ThisCol) = Cells(K, ThisCol) Then
                    Cells(K, ThisCol) = ""
                End If
            Next K
        End If
    Next J

    'Remove cells that are empty
    For J = ThatRow To ThisRow Step -1
        If Cells(J, ThisCol) = "" Then
            Cells(J, ThisCol).Delete xlShiftUp
        End If
    Next J
    Application.ScreenUpdating = True
End Sub

The macro works on a selection you make before calling it. Thus, if you need to remove duplicate cells from the range C15:C59, simply select that range and then run the macro. If you select more than a single column in the range (for instance, C15:E59), then only the first column in the range is affected. When the macro is complete, the duplicate cells are removed, as are any blank cells.

ExcelTips is your source for cost-effective Microsoft Excel training. This tip (2109) applies to Microsoft Excel 97, 2000, 2002, and 2003.

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