Вы не ответили на мои уточняющие вопросы ...
Я подготовил решение, способное работать очень быстро (с использованием массивов). Создайте резервную копию своей книги, потому что код перепишет соответствующие случаи в столбце M: M.
Sub MatchValue_TestArrays()
Dim designMod As Worksheet, lastRowD As Long, testSet As Worksheet, lastRowT As Long
Dim arrDes As Variant, arrTest As Variant, d As Long, t As Long, boolFound As Boolean
Set designMod = Worksheets("Sheet1")
Set testSet = Worksheets("Sheet2")
lastRowD = designMod.Range("K" & Cells.Rows.Count).End(xlUp).Row
lastRowT = testSet.Range("C" & Cells.Rows.Count).End(xlUp).Row
arrDes = designMod.Range("K4:M" & lastRowD).value 'load the range in array
arrTest = testSet.Range("B2:C" & lastRowT).value
For d = 1 To UBound(arrDes, 1)
For t = 1 To UBound(arrTest, 1)
If arrDes(d, 1) = arrTest(t, 2) Then
arrDes(d, 3) = arrTest(t, 1)'fill the array third column (M:M) with values of B:B testSheet...
Exit For
End If
Next t
Next d
designMod.Range("K4:M" & lastRowD).value = arrDes' Drop the modified array
End Sub
Попробуйте обновленный код, пожалуйста. Теперь он ищет все вхождения и помещает каждое в последовательный столбец:
Sub MatchValue_TestArrays_Extended()
Dim designMod As Worksheet, lastRowD As Long, testSet As Worksheet, lastRowT As Long
Dim arrDes As Variant, arrTest As Variant, d As Long, t As Long, col As Long
Set designMod = Worksheets("Design") ' Worksheets("Sheet1")
Set testSet = Worksheets("TestS") ' Worksheets("Sheet2")
lastRowD = designMod.Range("K" & Cells.Rows.Count).End(xlUp).Row
lastRowT = testSet.Range("C" & Cells.Rows.Count).End(xlUp).Row
arrDes = designMod.Range("K4:AQ" & lastRowD).value
arrTest = testSet.Range("B2:C" & lastRowT).value
For d = 1 To UBound(arrDes, 1)
col = 3 'the column where the occurrence will be put
For t = 1 To UBound(arrTest, 1)
If arrDes(d, 1) = arrTest(t, 2) Then
arrDes(d, col) = arrTest(t, 1): col = col + 1
End If
Next t
Next d
designMod.Range("K4:AQ" & lastRowD).value = arrDes
End Sub