Check column if duplicate record exist in VBA-excel - excel

Question

I'm new to VBA Macro in Excel, and would just like to ask if there's any function for checking duplicate records in excel.
This line of code below removes duplicate referring to column A, but I don't want to actually remove it without user's confirmation, what I wanted to do is to ask for user's confirmation if he wants it to be removed or not, like a popup, and then this line would just execute, but I have no idea if there's a function for checking duplicates.
ActiveSheet.Range("$A$1:$D$38").RemoveDuplicates Columns:=1
Thanks in advance for your help.

Answer 1

Please try the following code. I've set script to make duplicate cell empty, but you can insert your own code.
Sub FindDuplicates()
Dim i As Long
Dim j As Long
Dim lDuplicates As Long
Dim rngCheck As Range
Dim rngCell As Range
Dim rngDuplicates() As Range
'(!!!!!) Set your range
Set rngCheck = ActiveSheet.Range("$A$1:$D$38")
'Number of duplicates found
lDuplicates = 0
'Checking each cell in range
For Each rngCell In rngCheck.Cells
Debug.Print rngCell.Address
'Checking only non empty cells
If Not IsEmpty(rngCell.Value) Then
'Resizing and clearing duplicate array
ReDim rngDuplicates(0 To 0)
'Setting counter to start
i = 0
'Starting search method
Set rngDuplicates(i) = rngCheck.Find(What:=rngCell.Value, After:=rngCell, LookIn:=xlValues, _
LookAt:=xlWhole, SearchOrder:=xlByRows, SearchDirection:=xlNext)
'Check if we have at least one duplicate
If rngDuplicates(i).Address <> rngCell.Address Then
'Counting duplicates
lDuplicates = lDuplicates + 1
'If yes, continue filling array
Do While rngDuplicates(i).Address <> rngCell.Address
i = i + 1
ReDim Preserve rngDuplicates(0 To i)
Set rngDuplicates(i) = rngCheck.FindNext(rngDuplicates(i - 1))
Loop
'Ask what to do with each duplicate
'(except last value, which is our start cell)
For j = 0 To UBound(rngDuplicates, 1) - 1
Select Case MsgBox("Original cell: " & rngCell.Address _
& vbCrLf & "Duplicate cell: " & rngDuplicates(j).Address _
& vbCrLf & "Value: " & rngCell.Value _
& vbCrLf & "" _
& vbCrLf & "Remove duplicate?" _
, vbYesNoCancel Or vbExclamation Or vbDefaultButton1, "Duplicate found")
Case vbYes
'(!!!!!!!) insert here any actions you want to do with duplicate
'Currently it's set to empty cell
rngDuplicates(j).Value = ""
Case vbCancel
'If cancel pressed then exit sub
Exit Sub
End Select
Next j
End If
End If
Next rngCell
'Final message
Call MsgBox("Total number of duplicates: " & lDuplicates & ".", vbExclamation Or vbDefaultButton1, Application.Name)
End Sub
P.S. If you need to remove dulpicates only inside one column, you need to adjust rngCheck variable to that particular column.
P.P.S. In my opinion, it's easier to use conditional formatting.