4 columns compared for uniqueness


I have 4 columns and am trying to compare each column to assure no names are repeated. The actual columns in question are about 30000 entries in-length. I shortened it here for ease of viewing. Could you suggest an approach to compare these four columns? I was having a challenge trying VLOOKUP.

Thank you!
John DarbyPMAsked:
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Martin LissOlder than dirtCommented:
Try this macro.

Sub CheckForDuplicates()

Dim colValues As Collection
Dim lngLastRow As Long
Dim lngRow As Long
Dim lngCol As Long

lngLastRow = Range("C1048576").End(xlUp).Row

For lngRow = 2 To lngLastRow
    Set colValues = New Collection
    For lngCol = 3 To 6
        On Error Resume Next
        colValues.Add Cells(lngRow, lngCol).Value, CStr(Cells(lngRow, lngCol).Value)
        On Error GoTo 0
    If colValues.Count <> 4 Then
        Cells(lngRow, "G").Value = "Has dupliacte(s)"
    End If

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VBA is certainly a good way.  But you can use the Exact() and Trim() formulas too.  Normally Exact() would be fine by itself if there are no extra spaces in the cell names.  See attached.

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John DarbyPMAuthor Commented:
Great options...the EXACT/TRIM was the easiest solution. Thank you, both!
Martin LissOlder than dirtCommented:
I'm glad I was able to help.

In my profile you'll find links to some articles I've written that may interest you
including these two new ones.
Creating your own Excel Formulas and doing the impossible
A Guide to Writing Understandable and Maintainable VBA Code
Marty - MVP 2009 to 2015, Experts-Exchange Top Expert Visual Basic Classic 2012 to 2014
Glad to also be of help.
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