VBA to replace index matching.

dougmarkham

Active Member
Joined
Jul 19, 2016
Messages
252
Office Version
  1. 365
Platform
  1. Windows
Hi Folks,

I am looking for a way using VBA to do the following process:

I have two worksheets: Sheet 1 (contains Table 1) and Sheet 2 (contains table 2).

Worksheet 1:

  • Table 1 - Column A contains serial numbers.

Worksheet 2:

  • Table 2 - Column A contains an index of all the serial numbers.
  • Table 2 - Column B contains corresponding alpha numeric codes (one for each serial number).

Goal: I would like to run a macro which compares all the serial numbers in WkSht1 Table 1 - Col A with the index serial numbers in WkSht2 - Table 2 - Col A; once complete, I would like the VBA to copy the corresponding alpha numeric codes from WkSht2 - Col B and paste them over the serial numbers in WkSht1 - Col A.


For example:

Step 1: VBA would search Col A in Table 1, identifying them...

Worksheet 1 - Table 1
[TABLE="width: 500, align: left"]
<tbody>[TR]
[TD]Column A[/TD]
[TD]Column B[/TD]
[/TR]
[TR]
[TD]123457[/TD]
[TD]01/06/2018[/TD]
[/TR]
[TR]
[TD]123459[/TD]
[TD]01/06/2018[/TD]
[/TR]
</tbody>[/TABLE]






Step 2: VBA would match the identified serial numbers with those indexed in Table 2 - Col A:

Worksheet 2 - Table 2
[TABLE="width: 500, align: left"]
<tbody>[TR]
[TD]Column A[/TD]
[TD]Column B[/TD]
[/TR]
[TR]
[TD]123456[/TD]
[TD]ABC1[/TD]
[/TR]
[TR]
[TD]123457[/TD]
[TD]ABC2[/TD]
[/TR]
[TR]
[TD]123458[/TD]
[TD]ABC3[/TD]
[/TR]
[TR]
[TD]123459[/TD]
[TD]ABC4[/TD]
[/TR]
[TR]
[TD]123460[/TD]
[TD]ABC5[/TD]
[/TR]
</tbody>[/TABLE]










Then copy and paste the alpha-numeric codes back into Table 1 Column A (over-writing the serial codes).

Worksheet 1 - Table 1
[TABLE="width: 500"]
<tbody>[TR]
[TD]Column A[/TD]
[TD]Date[/TD]
[/TR]
[TR]
[TD]ABC2[/TD]
[TD]01/06/2018[/TD]
[/TR]
[TR]
[TD]ABC4[/TD]
[TD]01/06/2018[/TD]
[/TR]
</tbody>[/TABLE]


I have some code that matches and replaces data within two tables in the same worksheet; however, I would like some help modifying the code to do as outlined.

Code:
Code:
Sub Match & Replace
Dim rng as Range
Dim rngInspection as Range
 
Set rng = Range("B2:EX") -- Range of the left table
Set rngInspection = Range("O2:P5") -- Range of the right table
 
For Each rowInspection In rngInspection.Rows
 
   Dim part as string, serial as string, inspectionDate as String
   part = rowInspection.Cells(1).Value
   serial = rowInspection.Cells(2).Value
   inspectionDate = rowInspection.Cells(3)
 
   For Each row in rng.rows
       If (row.Cells(1).Value = part And row.Cells(2).Value = serial) Then
            row.Cells(4).Value = inspectionDate
       EndIf
   Next row
 
Next rowInspection



 

Excel Facts

Format cells as date
Select range and press Ctrl+Shift+3 to format cells as date. (Shift 3 is the # sign which sort of looks like a small calendar).
Try this:-
Code:
[COLOR="Navy"]Sub[/COLOR] MG24Jan42
[COLOR="Navy"]Dim[/COLOR] Rng [COLOR="Navy"]As[/COLOR] Range, Dn [COLOR="Navy"]As[/COLOR] Range, n [COLOR="Navy"]As[/COLOR] [COLOR="Navy"]Long[/COLOR]
[COLOR="Navy"]With[/COLOR] Sheets("Sheet1")
    [COLOR="Navy"]Set[/COLOR] Rng = .Range("A2", .Range("A" & Rows.Count).End(xlUp))
[COLOR="Navy"]End[/COLOR] With
[COLOR="Navy"]With[/COLOR] CreateObject("scripting.dictionary")
.CompareMode = vbTextCompare
[COLOR="Navy"]For[/COLOR] [COLOR="Navy"]Each[/COLOR] Dn [COLOR="Navy"]In[/COLOR] Rng: [COLOR="Navy"]Set[/COLOR] .Item(Dn.Value) = Dn: [COLOR="Navy"]Next[/COLOR]
[COLOR="Navy"]With[/COLOR] Sheets("Sheet2")
    [COLOR="Navy"]Set[/COLOR] Rng = .Range("A2", .Range("A" & Rows.Count).End(xlUp))
[COLOR="Navy"]End[/COLOR] With
[COLOR="Navy"]For[/COLOR] [COLOR="Navy"]Each[/COLOR] Dn [COLOR="Navy"]In[/COLOR] Rng
 [COLOR="Navy"]If[/COLOR] .exists(Dn.Value) [COLOR="Navy"]Then[/COLOR]
    .Item(Dn.Value).Value = Dn.Offset(, 1).Value
 [COLOR="Navy"]End[/COLOR] If
[COLOR="Navy"]Next[/COLOR] Dn
[COLOR="Navy"]End[/COLOR] [COLOR="Navy"]With[/COLOR]
[COLOR="Navy"]End[/COLOR] [COLOR="Navy"]Sub[/COLOR]
Regards Mick
 
Upvote 0
That method above is slow. Using a dictionary would be much quicker:

Code:
' Change these as appropriate
Private Const Sheet1Name = "Worksheet 1"
Private Const Sheet2Name = "Worksheet 2"
Private Const FirstRow = 1
Public Sub SerialToAlpha()

Dim myDic As Object
Dim lastRow As Long
Dim thisRow As Long
Dim ws1 As Worksheet
Dim ws2 As Worksheet

' Create the dictionary object
Set myDic = CreateObject("Scripting.Dictionary")

' Get references to the worksheets
Set ws1 = Worksheets(Sheet1Name)
Set ws2 = Worksheets(Sheet2Name)

' Populate the dictionary from the key/values in the second sheet
lastRow = ws2.Cells(ws2.Rows.Count, "A").End(xlUp).Row
For thisRow = FirstRow To lastRow
    If Not myDic.Exists(ws2.Cells(thisRow, "A").Value) Then
        myDic.Add ws2.Cells(thisRow, "A").Value, ws2.Cells(thisRow, "B").Value
    End If
Next thisRow

' Work through the first sheet and replace the values
lastRow = ws1.Cells(ws1.Rows.Count, "A").End(xlUp).Row
For thisRow = FirstRow To lastRow
    If myDic.Exists(ws1.Cells(thisRow, "A").Value) Then
        ws1.Cells(thisRow, "A").Value = myDic.Item(ws1.Cells(thisRow, "A").Value)
    End If
Next thisRow

End Sub

WBD
 
Upvote 0
That method above is slow. Using a dictionary would be much quicker:

Code:
' Change these as appropriate
Private Const Sheet1Name = "Worksheet 1"
Private Const Sheet2Name = "Worksheet 2"
Private Const FirstRow = 1
Public Sub SerialToAlpha()

Dim myDic As Object
Dim lastRow As Long
Dim thisRow As Long
Dim ws1 As Worksheet
Dim ws2 As Worksheet

' Create the dictionary object
Set myDic = CreateObject("Scripting.Dictionary")

' Get references to the worksheets
Set ws1 = Worksheets(Sheet1Name)
Set ws2 = Worksheets(Sheet2Name)

' Populate the dictionary from the key/values in the second sheet
lastRow = ws2.Cells(ws2.Rows.Count, "A").End(xlUp).Row
For thisRow = FirstRow To lastRow
    If Not myDic.Exists(ws2.Cells(thisRow, "A").Value) Then
        myDic.Add ws2.Cells(thisRow, "A").Value, ws2.Cells(thisRow, "B").Value
    End If
Next thisRow

' Work through the first sheet and replace the values
lastRow = ws1.Cells(ws1.Rows.Count, "A").End(xlUp).Row
For thisRow = FirstRow To lastRow
    If myDic.Exists(ws1.Cells(thisRow, "A").Value) Then
        ws1.Cells(thisRow, "A").Value = myDic.Item(ws1.Cells(thisRow, "A").Value)
    End If
Next thisRow

End Sub

WBD

Thanks MickG and WBD, both work perfectly.

WBD: your code using the 'dictionary object' works very quickly. I added:
Application.ScreenUpdating = False
Application.Calculation = xlManual
etc.

It completes almost instantly!

Thank you again.

Kind regards,

Doug.

P.S. my bored more juvenile colleagues especially enjoyed the line: If myDic.Exists...
Apparently they were surprised this line of code did not cause an excel error message.
 
Upvote 0
P.S. my bored more juvenile colleagues especially enjoyed the line: If myDic.Exists...
Apparently they were surprised this line of code did not cause an excel error message.

A colleague of mine once wanted to track the number of seconds it took for an analysis operation to complete. The variable name he chose? analSecs!

WBD
 
Upvote 0

Forum statistics

Threads
1,223,236
Messages
6,170,915
Members
452,366
Latest member
TePunaBloke

We've detected that you are using an adblocker.

We have a great community of people providing Excel help here, but the hosting costs are enormous. You can help keep this site running by allowing ads on MrExcel.com.
Allow Ads at MrExcel

Which adblocker are you using?

Disable AdBlock

Follow these easy steps to disable AdBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the icon in the browser’s toolbar.
2)Click on the "Pause on this site" option.
Go back

Disable AdBlock Plus

Follow these easy steps to disable AdBlock Plus

1)Click on the icon in the browser’s toolbar.
2)Click on the toggle to disable it for "mrexcel.com".
Go back

Disable uBlock Origin

Follow these easy steps to disable uBlock Origin

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back

Disable uBlock

Follow these easy steps to disable uBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back
Back
Top