Merge cells when cell value match (different column row value) - excel

Question

I would like to write a Excel vba to merge cells according to their values and a reference cell in another column. Like the picture attached.
I have over 18000 Lines, with many of variation.
All the values within the line are in order rank.
enter image description here
This is the code that I based my VBA
Sub MergeCells()
Application.ScreenUpdating = False
Application.DisplayAlerts = False
Dim rngMerge As Range, cell As Range
Set rngMerge = Range("B2:C10")
MergeAgain:
For Each cell In rngMerge
If cell.Value = cell.Offset(1, 0).Value And IsEmpty(cell) = False Then
Range(cell, cell.Offset(1, 0)).Merge
GoTo MergeAgain
End If
Next
Application.DisplayAlerts = True
Application.ScreenUpdating = True
End Sub

Answer 1

Edit Minor upgrade to allow merged ranges to be extended enabling merge updates.
Merge Vertically Adjacent Cells with Equal Values.
Save in a regular module.
Be sure the constants (Const) come before any other code in the module.
Consider adding a guard to ensure this only runs against the worksheet
it is intended for (see how to after the code).
Run the macro from the Alt-F8 Macro Dialogue.
NB Like most macros, this will wipe the Excel undo buffer.
It cannot be undone with a Ctrl-Z. (The only options are to revert to last saved
or manually edit to the way it was before.)
Copy/Paste
Private Const LastCol = 20
Private Const LastRow = 20
Public Sub Merge_Cells()
Dim r As Range
Dim s As Range
Dim l As Range
Dim c As Long
Dim v As Variant
For c = 1 To LastCol
Set s = Nothing
Set l = Nothing
For Each r In Range(Cells(1, c), Cells(LastRow, c))
v = r.MergeArea(1, 1).Value
If v = vbNullString Then
DoMerge s, l
Set s = Nothing
Set l = Nothing
ElseIf s Is Nothing Then
Set s = r
ElseIf s.Value <> v Then
DoMerge s, l
Set s = r
Set l = Nothing
Else
Set l = r
End If
Next r
DoMerge s, l
Next c
End Sub
Private Sub DoMerge(ByRef s As Range, ByRef l As Range)
If s Is Nothing Then Exit Sub
If l Is Nothing Then Set l = s
Application.DisplayAlerts = False
With Range(s, l)
.HorizontalAlignment = xlCenter
.VerticalAlignment = xlCenter
.Merge
End With
Application.DisplayAlerts = True
End Sub
Consider finding the last column and last row programmatically.
If the merge should start after row 1:
For Each r In Range(Cells(1, c), Cells(LastRow, c))
^
Change the 1 to the correct row number or replace with an added const variable.
To guard other worksheets, use the tab name (recommend renaming the tab first):
For Each r In Worksheets(TabName).Range(Cells(1, c), Cells(LastRow, c))
^^^^^^^^^^^^^^^^^^^^
Make this edit to the same line as the starting row edit.
And add Private Const TabName = "The Merge Tabs Name" ' Spaces ok
to the top of the Module with the other Const (constants).
Or place the name directly in the code: Worksheets("The Merge Tabs Name").

Answer 2

Add this into a module, select your range of data (excluding headers), run the macro and see if it works for you.
Public Sub MergeRange()
Dim rngData As Range, lngRow As Long, lngCol As Long, strTopCell As String
Dim strBottomCell As String, strThisValue As String, strNextValue As String
Dim strThisMergeArea As String, strNextMergeArea As String
Set rngData = Selection
Application.DisplayAlerts = False
Application.ScreenUpdating = False
With rngData
For lngCol = 1 To .Columns.Count
strTopCell = ""
For lngRow = 1 To .Rows.Count
If strTopCell = "" Then strTopCell = .Cells(lngRow, lngCol).Address
strThisValue = .Cells(lngRow, lngCol)
strNextValue = .Cells(lngRow + 1, lngCol)
If lngCol > 1 Then
strThisMergeArea = .Cells(lngRow, lngCol - 1).MergeArea.Address
strNextMergeArea = .Cells(lngRow + 1, lngCol - 1).MergeArea.Address
If strThisMergeArea <> strNextMergeArea Then strNextValue = strThisValue & "."
End If
If strNextValue <> strThisValue Or lngRow = .Rows.Count Then
strBottomCell = .Cells(lngRow, lngCol).Address
With rngData.Worksheet.Range(strTopCell & ":" & strBottomCell)
.HorizontalAlignment = xlCenter
.VerticalAlignment = xlCenter
.MergeCells = True
End With
strTopCell = .Cells(lngRow + 1, lngCol).Address
End If
Next
Next
End With
Application.DisplayAlerts = True
Application.ScreenUpdating = True
End Sub
There's one trick to this which is able to be changed and that is that it will also group based off the prior column. You can see an example of what I'm talking about in cell C19 ...
... it has worked out that the previous column had a grouping that stopped at that point, therefore, the 1 isn't carried through and grouped to the next lot, it stops and is grouped there. I hope that makes sense and I hope it gives you what you need.
Another thing, this code here will attempt to demerge all of your previously merged data.
Public Sub DeMergeRange()
Dim rngData As Range, lngRow As Long, lngCol As Long, objCell As Range
Dim objMergeArea As Range, strMergeRange As String, strFirstCell As String
Dim strLastCell As String, objDestRange As Range
Set rngData = Selection
Application.DisplayAlerts = False
Application.ScreenUpdating = False
With rngData
For lngCol = 1 To .Columns.Count
For lngRow = 1 To .Rows.Count
Set objCell = .Cells(lngRow, lngCol)
If objCell.Areas(1).MergeArea.Cells.Count > 1 Then
strMergeRange = objCell.Areas(1).MergeArea.Address
objCell.MergeCells = False
strFirstCell = Split(strMergeRange, ":")(0)
strLastCell = Split(strMergeRange, ":")(1)
Set objDestRange = .Worksheet.Range(.Worksheet.Range(strFirstCell).Offset(1, 0).Address & ":" & strLastCell)
.Worksheet.Range(strFirstCell).Copy objDestRange
End If
Next
Next
End With
Application.DisplayAlerts = True
Application.ScreenUpdating = True
End Sub
A note, my suggestion is to ensure you have the original source data saved to another workbook/sheet as a backup before running any code over the top of it.
If it stuffs with your data then it will be a right royal pain to undo manually.