Recon / Duplicate VBA Freezing when used on 100-200k or more rows.

[Mike_VBA]

Hi Forum,

I have written a piece of code that does reconciliation:

The first part checks between columns:

Sub AutoRecon()
Worksheets("Main_Recon").Select
Dim i As Long, _
LRa As Long, _
LRb As Long, _
rowx As Long
LRa = Range("A" & Rows.Count).End(xlUp).Row
LRb = Range("G" & Rows.Count).End(xlUp).Row
rowx = 2
Application.ScreenUpdating = False


For i = 2 To LRa
If Range("A" & i).Errors.Item(xlNumberAsText).Value = True Then
Range("A" & i).Value = "N" & Range("A" & i).Value
rowx = rowx + 1
End If
Next i


rowx = 2
For i = 2 To LRb
If Range("G" & i).Errors.Item(xlNumberAsText).Value = True Then
Range("G" & i).Value = "N" & Range("G" & i).Value
rowx = rowx + 1
End If
Next i


rowx = 2
For i = 2 To LRa
If IsError(Application.Match(Range("A" & i).Value, Range("G2:G" & LRb), 0)) Then
Range("O" & rowx).Value = Range("A" & i).Value
rowx = rowx + 1
End If
Next i
rowx = 2
For i = 2 To LRb
If IsError(Application.Match(Range("G" & i).Value, Range("A2:A" & LRa), 0)) Then
Range("S" & rowx).Value = Range("G" & i).Value
rowx = rowx + 1
End If
Next i
Application.ScreenUpdating = True
End Sub

The second part checks for duplicates in a Column (A in this example)

Sub CopyDupsToR()Dim x, i&, j&, k, s$
Dim LR As Long
Worksheets("Main_Recon").Activate
LR = Cells(Rows.Count, "A").End(xlUp).Row
Application.ScreenUpdating = False
    x = Sheets("Main_Recon").Range("A1:A" & LR)
With CreateObject("Scripting.Dictionary")
    .CompareMode = 1
    For i = 2 To LR
        s = 1
        For j = 1 To UBound(x, 2)
            s = s & "~" & x(i, j)
       Next j


        If .Exists(s) Then
           .Item(s) = 2 & Mid(.Item(s), 2)
        Else
            .Item(s) = s
         End If
    Next i


    For Each k In .keys
        If Val(.Item(k)) = 1 Then
            .Remove k
        Else
            .Item(k) = Split(Mid(.Item(k), 3), "~")
        End If
    Next k
    If .Count > 0 Then Sheets("RECONCILE").Range("M2").Resize(.Count, UBound(x, 2)).Value = Application.Index(.items, 0, 0)
End With
Application.ScreenUpdating = True
Worksheets("RECONCILE").Range("M1").Value = "Duplicates Left Side"
If Worksheets("RECONCILE").Range("M2") = "" Then
        Worksheets("RECONCILE").Range("M2").Value = "NO RECORDS"
        End If
End Sub

Works absolutely fine on upto 100k Rows, then simply freezes on anything bigger. Is the an optimal way to write this? Should I be using a scripting dictionary for the reconciliation too? Ive been off VBA for a while now and I am pretty rusty! Thanks for reading and helping.

 

[Mike_VBA]

I would also like to mention the recon code checks for values that are long numbers in text and appends "N" to them to bypass the scientific notation issue in excel. After it does this then it checks for same value in the other column (G).

 

[Mike_VBA]

Bump!

 

[Mike_VBA]

Anyone can steer me in the right direction?