有没有办法比较 excel 中的更改列并删除重复项?

Is there a way to compare to changing columns in excel and delete duplicates?

所以我正在尝试在 excel 中实现条码扫描器。它已经将条形码作为数字输入到单元格中。在另一列中,我有一组条形码。所以当扫码器提供一个条码时,这个条码和其他栏中重复的条码被删除。

我已经尝试过excel比较表功能,但是它既不能删除重复的条码,也不能在条码列中不标记重复项。这意味着:如果代码 123456 在条形码列中出现两次,它将被标记为重复。

假设我有条形码 123,123,124,125。然后,如果我扫描 124,我希望该列仅包含 123,123,125,如果我扫描 123,我希望它包含 123,125。

在 excel 中有没有办法做到这一点,或者我需要特定的软件,如果需要,那么使用哪个?

My problem image

您可以尝试在 sheet 更改事件中导入以下代码,修改并尝试:

Option Explicit

Private Sub Worksheet_Change(ByVal Target As Range)

    Dim BarCode As String
    Dim LastRowA As Long, LastRowC As Long, i As Long, Times As Long
    Dim arr As Variant

    'Let us assume that:
    '1. All bar codes appears in column A
    '2. The Selected bar code are in cell B2
    '3. And the results are in column C

    With ThisWorkbook.Worksheets("Sheet1")

        If Not Intersect(Target, .Range("B2")) Is Nothing And Target.Count = 1 Then '<- Check if there is any change in cell B2

            LastRowC = .Cells(.Rows.Count, "C").End(xlUp).Row

            Application.EnableEvents = False

                If LastRowC > 1 Then

                    .Range("C2:C" & LastRowC).Clear '<- If there are data in the results field clear them

                End If

                BarCode = Target.Value '<- Get the code imported

                LastRowA = .Cells(.Rows.Count, "A").End(xlUp).Row

                arr = .Range("A2:A" & LastRowA) '<- Create an array with all the bar codes

                For i = LBound(arr) To UBound(arr) '<- Loop codes
                    Debug.Print arr(i, 1)
                    If arr(i, 1) = BarCode Then
                        Times = Times + 1
                        If Times > 1 Then
                            LastRowC = .Cells(.Rows.Count, "C").End(xlUp).Row
                            .Range("C" & LastRowC + 1).Value = arr(i, 1)
                        End If
                    Else
                        LastRowC = .Cells(.Rows.Count, "C").End(xlUp).Row
                        .Range("C" & LastRowC + 1).Value = arr(i, 1)
                    End If

            Next i

            Application.EnableEvents = True

        End If

    End With

End Sub

结果: