Application Match Function how to copy paste data - excel

Question

Using Application.Match Function but unable to know how to paste the Col"M" data into Col"P" after the Matching the Col"O" and Col"L".
When run the Current function it gives the count of match.
Any help will be appreciated.
Dim k As Integer
For k = 2 To 9
ws2.Cells(k, 16).Value = Application.Match(ws2.Cells(k, 15).Value, ws2.Range("L2:L9"), 0)
Next k
I have edited the code with the columns and in which column the result is required. But unable to make changes I really appreciate your help that you make this function. I added some comments may it can help.
' Sheet2 Col"C" with ID's
With ws2
Dim lastRow As Long
lastRow = .Range("A" & .Rows.Count).End(xlUp).Row
Dim originalData() As Variant
originalData = .Range("C2:C" & lastRow).Value
End With
' Sheet2 Col"C" with ID's
With ws3
Dim lastRow2 As Long
lastRow2 = .Range("A" & .Rows.Count).End(xlUp).Row
Dim newData() As Variant
newData = .Range("C2:C" & lastRow2).Value
End With
Dim i As Long
For i = LBound(newData, 1) To UBound(newData, 1)
Dim j As Long
For j = LBound(originalData, 1) To UBound(originalData, 2)
If newData(i, 1) = originalData(j, 1) Then
newData(i, 2) = originalData(j, 2)
Exit For
End If
Next
Next
'Sheet2 Col"K" where Sheet3 Col"E" data will be pasted
ws2.Range("K2:K" & lastRow).Value = newData

Answer 1

A scripting dictionary which maps "keys" to "values" is typically the fastest approach when you need to perform a lot of lookups. It's a bit more code to write but should be quick.
Sub DoLookup()
Dim arrKeys, arrValues, wsData As Worksheet, wsDest As Worksheet
Dim map As Object, rngSearch As Range, rngResults As Range, k, v, n As Long
Set wsData = ThisWorkbook.Worksheets("Sheet3") 'sheet with the lookup table
Set wsDest = ThisWorkbook.Worksheets("Sheet2") 'sheet to be populated
arrKeys = wsData.Range("C2:C" & LastRow(wsData, "C")).Value 'keys in the lookup table
arrValues = wsData.Range("G2:G" & LastRow(wsData, "C")).Value 'values in the lookup table
Set map = MapValues(arrKeys, arrValues) 'get a map of Keys->Values
Set rngSearch = wsDest.Range("C2:C" & LastRow(wsDest, "c")) 'keys to look up
Set rngResults = rngSearch.EntireRow.Columns("K") 'results go here
arrKeys = rngSearch.Value 'keys to look up
arrValues = rngResults.Value 'array to populate with results
For n = 1 To UBound(arrKeys) 'loop over keys to look up
v = "" 'or whatever you want to see if no match
k = arrKeys(n, 1)
If map.exists(k) Then v = map(k)
arrValues(n, 1) = v
Next n
rngResults.Value = arrValues 'populate the results array back to the sheet
End Sub
'Return a Scripting Dictionary linking "keys" to "values"
' Note - assumes same-size single-column inputs, and that keys are unique,
' otherwise you just map to the *last* value for any given key
Function MapValues(arrKeys, arrValues)
Dim n, dict As Object, k
Set dict = CreateObject("scripting.dictionary")
For n = 1 To UBound(arrKeys, 1)
k = CStr(arrKeys(n, 1)) 'string keys are faster to add?
If Len(k) > 0 Then dict(k) = arrValues(n, 1)
Next n
Set MapValues = dict
End Function
'utility function
Function LastRow(ws As Worksheet, col As String) As Long
LastRow = ws.Cells(ws.Rows.Count, col).End(xlUp).Row
End Function
In my test workbook this was able to perform 10k lookups against a table of 10k rows in <0.1 sec.

Answer 2

You always should test if the Match succeeded, using IsError.
Then use Cells:
Dim k As Long
For k = 2 To 9
Dim m As Variant
m = Application.Match(ws2.Cells(k, 15).Value, ws2.Range("L2:L9"), 0)
If Not IsError(m) Then
ws2.Cells(k, 16).Value = ws2.Range("M2:M9").Cells(m)
End If
Next