excel - 用于从 Excel 更新/创建新记录到 Access 的 VBA 代码

Question

我一直在努力到处寻找答案，但我的 VBA 基础技能很低，实际上并不能帮助我弄清楚我要编码的内容。

到目前为止我有这个代码:

Sub ADOFromExcelToAccess()
' exports data from the active worksheet to a table in an Access database
' this procedure must be edited before use
Dim cn As ADODB.Connection, rs As ADODB.Recordset, r As Long
' connect to the Access database
Set cn = New ADODB.Connection
cn.Open "Provider=Microsoft.ACE.OLEDB.12.0; " & _
    "Data Source=\\GSS_Model_2.4.accdb;"
' open a recordset
Set rs = New ADODB.Recordset
rs.Open "Forecast_T", cn, adOpenKeyset, adLockOptimistic, adCmdTable
' all records in a table
For i = 4 To 16
    x = 0
    Do While Len(Range("E" & i).Offset(0, x).Formula) > 0
' repeat until first empty cell in column A
        With rs
            .AddNew ' create a new record
            .Fields("Products") = Range("C" & i).Value
            .Fields("Mapping") = Range("A1").Value
            .Fields("Region") = Range("B2").Value
            .Fields("ARPU") = Range("D" & i).Value
            .Fields("Quarter_F") = Range("E3").Offset(0, x).Value
            .Fields("Year_F") = Range("E2").Offset(0, x).Value
            .Fields("Units_F") = Range("E" & i).Offset(0, x).Value
            .Update
         ' stores the new record
    End With
    x = x + 1
    Loop
Next i
rs.Close
Set rs = Nothing
cn.Close
Set cn = Nothing
End Sub

到目前为止，这段代码正是我想要的。我知道想要添加一个片段，根据 4 个规则检查记录是否存在:Products、Region、Quarter_F 和 Year_F如果与这些匹配，则应更新其他字段(Units_F、ARPU)。如果没有，它应该正确运行代码并创建一个新记录。

非常感谢您的帮助，我被困在这里，不知道如何出去。

谢谢

Answer 1

我有一个 Excel 电子表格，其中包含从单元格 A1 开始的以下数据

product  variety  price
bacon    regular  3.79
bacon    premium  4.89
bacon    deluxe   5.99

我的 Access 数据库中有一个名为“PriceList”的表，其中包含以下数据

product  variety  price
-------  -------  -----
bacon    premium  4.99
bacon    regular  3.99

以下 Excel VBA 将使用“普通”和“高级”的新价格更新现有的 Access 记录，并在表中添加“豪华”的新行:

Public Sub UpdatePriceList()
Dim cn As ADODB.Connection, rs As ADODB.Recordset
Dim sProduct As String, sVariety As String, cPrice As Variant
' connect to the Access database
Set cn = New ADODB.Connection
cn.Open "Provider=Microsoft.ACE.OLEDB.12.0; " & _
    "Data Source=C:\Users\Gord\Desktop\Database1.accdb;"
' open a recordset
Set rs = New ADODB.Recordset
rs.Open "PriceList", cn, adOpenKeyset, adLockOptimistic, adCmdTable

Range("A2").Activate  ' row 1 contains column headings
Do While Not IsEmpty(ActiveCell)
    sProduct = ActiveCell.Value
    sVariety = ActiveCell.Offset(0, 1).Value
    cPrice = ActiveCell.Offset(0, 2).Value

    rs.Filter = "product='" & sProduct & "' AND variety='" & sVariety & "'"
    If rs.EOF Then
        Debug.Print "No existing record - adding new..."
        rs.Filter = ""
        rs.AddNew
        rs("product").Value = sProduct
        rs("variety").Value = sVariety
    Else
        Debug.Print "Existing record found..."
    End If
    rs("price").Value = cPrice
    rs.Update
    Debug.Print "...record update complete."

    ActiveCell.Offset(1, 0).Activate  ' next cell down
Loop
rs.Close
Set rs = Nothing
cn.Close
Set cn = Nothing
End Sub