VBA Excel to cross-join and clean data with multiple entries per cell separated by comma or line-breaks

CleanData_CrossJoin.vb

Private Function isSaved() As Boolean
    Dim lastSaved As String
    On Error GoTo EHandler
    s = ActiveWorkbook.BuiltinDocumentProperties("last save time")
    isSaved = True
    Exit Function
EHandler:
    isSaved = False
End Function

Private Sub CrossJoinRangesWithoutDupes(colRanges() As Variant, destSheetName As String, srcSheetName As String)
    Dim cn As ADODB.Connection
    Dim sql As String
    Dim sqlRanges() As String, startAddress As String, endAddress As String
    Dim tempSheet As Worksheet
    Dim lastCol As Long, col As Long, endRow As Long
    Dim rs As ADODB.Recordset
    
    lastCol = UBound(colRanges)
    sql = "SELECT DISTINCT * FROM "
    ReDim sqlRanges(1 To lastCol)
   
    Set tempSheet = Sheets.Add
    'copy each column to a tempSheet and create the sql dynamically
    For col = 1 To lastCol
        'add the columnheader
        tempSheet.Cells(1, col) = Sheets(srcSheetName).Cells(1, col).Value
        endRow = UBound(colRanges(col)) + 2
        startAddress = Cells(2, col).Address(False, False)
        endAddress = Cells(endRow, col).Address(False, False)
        tempSheet.Range(startAddress & ":" & endAddress) = WorksheetFunction.Transpose(colRanges(col))
        startAddress = Cells(1, col).Address(False, False)
        sqlRanges(col) = "[" & tempSheet.Name & "$" & startAddress & ":" & endAddress & "]"
    Next col
    sql = sql + Join(sqlRanges, ",")
    Set rs = New ADODB.Recordset
    Set cn = New ADODB.Connection
    With cn
        .ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" & _
              "Data Source=" & ActiveWorkbook.FullName & ";" & _
              "Extended Properties=""Excel 12.0 XML;HDR=Yes"""
        .Open
    End With
    rs.Open sql, cn
    'append to outputSheet
    endRow = Sheets(destSheetName).Cells(Rows.Count, 1).End(xlUp).Row
    If Sheets(destSheetName).Range("A1").Value <> "" Then
            endRow = endRow + 1
        End If
    Sheets(destSheetName).Cells(endRow, 1).CopyFromRecordset rs
    'delete the temp sheet
    Application.DisplayAlerts = False
    tempSheet.Delete
    Application.DisplayAlerts = True
    rs.Close
    cn.Close
End Sub
 
Sub CleanData()
    Dim colRanges() As Variant
    Dim workingRange As Range, currCell As Range, currRow As Range
    Dim currRowIndexIndex As Long, currColIndexIndex As Long, endRow As Long
    Dim endCol As Long
    Dim i As Integer
    Dim activeSheetName As String
    Dim hasMultiple As Boolean
    Dim outputSheet As Worksheet
    Dim objRegex As Object
    If Not isSaved Then
        MsgBox "Please save the WorkBook prior to running this macro", vbExclamation, "WorkBook not saved!"
        Exit Sub
    End If
    Application.ScreenUpdating = False
    'Define the working range
    Set workingRange = Range("A1").CurrentRegion
    activeSheetName = ActiveSheet.Name
    Set outputSheet = Sheets.Add
    outputSheet.Name = "Clean Data"
    For Each currRow In workingRange.Rows
        hasMultiple = False
        ReDim colRanges(1 To currRow.Columns.Count)
        currColIndex = 1
        For Each currCol In currRow.Columns
            'split column by Alt Enter or comma
            colRanges(currColIndex) = Split(currCol, vbLf)
            'if no alt enter check for comma
            If UBound(colRanges(currColIndex)) = 0 And InStr(currCol, ",") Then
                colRanges(currColIndex) = Split(currCol, ",")
            End If
            'check if if the current row contains any columns with multiple entries
            If UBound(colRanges(currColIndex)) > 0 Then
                hasMultiple = True
            End If
            currColIndex = currColIndex + 1
        Next
        'get rid of extra spaces
        For i = 1 To UBound(colRanges)
            For col = 0 To UBound(colRanges(i))
                colRanges(i)(col) = Trim(colRanges(i)(col))
            Next col
        Next i
        If Not hasMultiple Then
            'output row as is
            endRow = outputSheet.Cells(Rows.Count, 1).End(xlUp).Row
            If outputSheet.Range("A1").Value <> "" Then
                endRow = endRow + 1
            End If
            endCol = UBound(colRanges)
            outputSheet.Range(Cells(endRow, 1), Cells(endRow, endCol)) = WorksheetFunction.Transpose(colRanges)
        Else
            'output cross-join (without dupes) of columns
            CrossJoinRangesWithoutDupes colRanges, "Clean Data", activeSheetName
        End If
    Next
End Sub