Option Explicit
Sub DeleteDuplicateRows()
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' DeleteDuplicateRows
' This will delete duplicate records, based on the Active Column. That is,
' if the same value is found more than once in the Active Column, all but
' the first (lowest row number) will be deleted.
'
' To run the macro, select the entire column you wish to scan for
' duplicates, and run this procedure.
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Dim r As Long
Dim n As Long
Dim V As Variant
Dim rng As Range
On Error GoTo EndMacro
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
Set rng = Application.Intersect(ActiveSheet.UsedRange, _
ActiveSheet.Columns(ActiveCell.Column))
Application.StatusBar = "Processing Row: " & Format(rng.Row, "#,##0")
n = 0
For r = rng.Rows.Count To 2 Step -1
If r Mod 500 = 0 Then
Application.StatusBar = "Processing Row: " & Format(r, "#,##0")
End If
V = rng.Cells(r, 1).Value
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' Note that COUNTIF works oddly with a Variant that is equal to vbNullString.
' Rather than pass in the variant, you need to pass in vbNullString explicitly.
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If V = vbNullString Then
If Application.WorksheetFunction.CountIf(rng.Columns(1), vbNullString) > 1 Then
rng.Rows(r).EntireRow.Delete
n = n + 1
End If
Else
If Application.WorksheetFunction.CountIf(rng.Columns(1), V) > 1 Then
rng.Rows(r).EntireRow.Delete
n = n + 1
End If
End If
Next r
EndMacro:
Application.StatusBar = False
Application.ScreenUpdating = True
Application.Calculation = xlCalculationAutomatic
MsgBox "Duplicate Rows Deleted: " & CStr(n)
End Sub