Removing ALL Duplicates Row in VBA - vba

Question

I am looking to find out how I can remove ALL duplicate rows (when duplicates exist in the first column) using a VBA macro.
Currently Excel macros delete all duplicate instances EXCEPT for the first instance, which is totally not what I want. I want absolute removal.

Answer 1

A bit shorter solution done for quick morning training:
Sub quicker_Option()
Dim toDel(), i As Long
Dim RNG As Range, Cell As Long
Set RNG = Range("a1:a19") 'set your range here
For Cell = 1 To RNG.Cells.Count
If Application.CountIf(RNG, RNG(Cell)) > 1 Then
ReDim Preserve toDel(i)
toDel(i) = RNG(Cell).Address
i = i + 1
End If
Next
For i = UBound(toDel) To LBound(toDel) Step -1
Range(toDel(i)).EntireRow.Delete
Next i
End Sub

Answer 2

Store the first instance's cell for later deleting.
Then go deleting duplicates until the end.
Dim F as integer, S as integer 'indices for First and Second cells to be compared
Dim Deleted as boolean 'indicates if second line was deleted
Dim First as Range, Second as Range 'First and second cells to be compared
Dim Start as string 'Indicates the position of the first cell's start
Start = "A1" 'can be as you like
Set First = Sheet1.Range(Start) 'Sets the start cell
F = 0 '
Do While First.Value <> "" 'loop while sheet contains data in the column
S = F + 1 'second cell is at least 1 cell below first cell
Deleted = false 'no second cell was deleted yet
Set Second = First.Offset(S,0) 'second cell is an offset of the first cell
Do While Second.Value <> "" 'loop while second cell is in sheet's range with data
if Second.Value = First.Value then 'if values are duplicade
Second.EntreRow.Delete 'delete second cell
Deleted = true 'stores deleted information
else 'if not, second cell index goes next
S = S + 1;
end if
Set Second = First.Offset(S, 0) 'sets second cell again (if deleted, same position, if not deleted, next position
Loop
if Deleted then 'if deleted, should delete first cell as well
First.EntireRow.Delete
else
F = F + 1 'if no duplicates found, first cell goes next
end if
Set First = Sheet1.Range(Start).Offset(F,0) 'sets first cell again (if deleted, same position, if not, next)
Loop

Answer 3

I am using this code to create an Auto reconciliation of general ledger control accounts where if any cell with equal value but opposite sign is cut to sheet 2; hence left with only reconciliation item.
the code:
sub autoRecs()
dim i as long
Application.ScreenUpdating = False
Application.StatusBar = True
Dim i As Long
Cells(5, 6).Select
Dim x As Long
Dim y As Long
x = ActiveCell.Row
y = x + 1
Do Until Cells(x, 6) = 0
Do Until Cells(y, 6) = 0
Application.StatusBar = "Hey Relax! You can rely on me......"
If Cells(x, 6) = Cells(y, 6) * -1 Then
Cells(x, 6).EntireRow.Cut (Worksheets(2).Cells(x, 6).EntireRow)
Cells(y, 6).EntireRow.Cut (Worksheets(2).Cells(y, 6).EntireRow)
Cells(x, 6).Value = "=today()"
Cells(y, 6).Value = "=today()"
Else
y = y + 1
End If
Loop
x = x + 1
y = x + 1
Loop
Application.StatusBar = False
End Sub
Sub deleteBlankCells()`this is to delete unnecessary cells after run the above macro`
Range(Cells(5, 1), Cells(Rows.Count, 1).End(xlUp)).Select
For i = Selection.Rows.Count To 1 Step -1
Application.StatusBar = "OOH! I'm cleaning all the blanks for you....."
If WorksheetFunction.CountA(Selection.Rows(i)) = 0 Then
Selection.Rows(i).EntireRow.Delete
End If
Next i
Application.StatusBar = False
End Sub

Answer 4

I like to work with arrays within VBA, so here is an example.
Assume the data represents the currentregion around A1, but that is easily changed
Read the source data into an array
Check each item in column one to ensure it is unique (countif of that item = 1)
If unique, add the corresponding row number to a Collection
Use the size of th collection and the number of columns to Dim a results array.
Cycle through the collection, writing the corresponding rows to a results array.
Write the results array to the worksheet.
As written, the results are placed to the right of the source data, but could also replace it, or be placed on a different sheet.
Option Explicit
Sub RemoveDuplicatedRows()
Dim vSrc As Variant, vRes() As Variant
Dim rSrc As Range, rRes As Range
Dim colUniqueRows As Collection
Dim I As Long, J As Long
'assume data starts in A1 and represented by currentregion
Set rSrc = Range("a1").CurrentRegion
vSrc = rSrc
Set rRes = rSrc.Offset(0, UBound(vSrc, 2) + 2)
'get collection of non-duplicated rows
Set colUniqueRows = New Collection
For I = 1 To UBound(vSrc)
If WorksheetFunction.CountIf(rSrc.Columns(1), vSrc(I, 1)) = 1 Then _
colUniqueRows.Add I
Next I
'Make up results array
ReDim vRes(1 To colUniqueRows.Count, 1 To UBound(vSrc, 2))
For I = 1 To UBound(vRes, 1)
For J = 1 To UBound(vSrc, 2)
vRes(I, J) = vSrc(colUniqueRows(I), J)
Next J
Next I
rRes.EntireColumn.Clear
rRes.Resize(UBound(vRes)) = vRes
End Sub