Question

（1）我有3个表（A-Sched，B-Trans和C-ItemRecep）和一个名为D-TransDetailRecep的Lookup表。下面是关系图。 {{3}}

（2）我通过点击按钮将表格中的值插入到表格字段中，点击按钮实现了下面的DAO：

Public Sub RecpSchedule1（） '仅限咨询 Dim db作为DAO.Database Dim rs As DAO.Recordset，rt As DAO.Recordset，rd As DAO.Recordset，ri As DAO.Recordset Dim lngTransId As Long Dim lngItemRecepId As Long

Set db = CurrentDb
Set rs = db.OpenRecordset("Sched")
Set rt = db.OpenRecordset("Trans")
Set ri = db.OpenRecordset("ItemRecep")
Set rd = db.OpenRecordset("TransDetailRecep")

lngItemRecepId = Nz（DMax（“ID”，“ItemRecep”），0）+ 1'下一个ItemRecep ID lngTransId = Nz（DMax（“ID”，“Trans”），0）+ 1'Next Trans ID

    With rs
        .AddNew
        !SDate = Me.txtSchedDate
        !PatientName = Me.cmbPatientName
        !RegNo = Me.txtRegNo
        !DateOfBirth = Me.txtAge
        !Gender = Me.txtGender
        !PatientClass = Me.PatientClass
        !RecepSchedule = True
        .Update
    End With


    With rt
        .AddNew
        !ID = lngTransId
        !SchedRegNo = Me.txtRegNo
        ![Total_RecepFee] = Nz((Me.txtConsFee + Me.txtIOPFee + ![Total_RecepFee]), 0)

       .Update
    End With

    With ri
        .AddNew
        !ID = lngItemRecepId
        !ItemName = "ConsFee"
        !Price = Me.txtConsFee.Value
        !Dept = "Reception"
        .Update
    End With

    With rd
        .AddNew
        !TransID = lngTransId
        !TransID = DMax("ID", "Trans")
        !ItemRecepID = DMax("ID", "ItemRecep")
        .Update
    End With



    rs.Close
    rt.Close
    ri.Close
    rd.Close

 Set rs = Nothing
 Set rt = Nothing
 Set rd = Nothing
 Set ri = Nothing
 Set db = Nothing

End Sub

Public Sub RecpSchedule2（）

Dim db As DAO.Database
Dim rs As DAO.Recordset, rt As DAO.Recordset, rd As DAO.Recordset, ri As DAO.Recordset
Dim lngTransId As Long
Dim lngItemRecepId As Long


Set db = CurrentDb
Set rt = db.OpenRecordset("Trans")
Set ri = db.OpenRecordset("ItemRecep")
Set rd = db.OpenRecordset("TransDetailRecep")

lngItemRecepId = Nz（DMax（“ID”，“ItemRecep”），0）+ 1'下一个ItemRecep ID lngTransId = Nz（DMax（“ID”，“Trans”），0）+ 1'Next Trans ID

    'With rt
       ' .AddNew
       ' !ID = lngTransId
        '!SchedRegNo = Me.txtRegNo
        '![Total_RecepFee] = Nz((Me.txtIOPFee + ![Total_RecepFee]), 0)
       '.Update
   ' End With

    With ri
        .AddNew
        !ID = lngItemRecepId
        !ItemName = "IOPFee"
        !Price = Me.txtIOPFee.Value
        !Dept = "Reception"
        .Update
    End With

    With rd
        .AddNew
        !TransID = lngTransId
        !TransID = DMax("ID", "Trans")
        !ItemRecepID = DMax("ID", "ItemRecep")
        .Update
    End With



    rt.Close
    ri.Close
    rd.Close

 Set rt = Nothing
 Set rd = Nothing
 Set ri = Nothing
 Set db = Nothing

End Sub

{{3}} （3）我的挑战：Total_RecepFee的字段应显示500，其中Price为500，并显示1200，其中Price为1200.（我现在的情况是两者都显示值的总和）

Answer 1

问题在于：

rd!TransID = rt!ID
rd!ItemRecepID = ri!ID

尚未运行rt.Update和ri.Update方法来保存记录集。但即便如此，.AddNew也会创建一条新记录，因此rt!ID和ri!ID都是空的。

您可以先尝试保存rt和ri个记录集，然后通过DMax函数检索Max（ID）（因为这将是最后添加的ID）。但是，如果多个用户有权同时添加数据，这可能会有风险（实际上风险很大）。

我建议为什么不删除自动编号ID并手动处理它？</ p>

Dim lngId as Long
    lngId = DMax("ID", "Trans") + 1
    'You can now feed it to both tables

尝试下面的更新代码。我自己无法测试它。

Public Sub RecpSchedule1()

    Dim db As DAO.Database
    Dim rs As DAO.Recordset, rt As DAO.Recordset, rd As DAO.Recordset, ri As DAO.Recordset

    Set db = CurrentDb
    Set rs = db.OpenRecordset("Sched")
    Set rt = db.OpenRecordset("Trans")
    Set ri = db.OpenRecordset("ItemRecep")
    Set rd = db.OpenRecordset("TransDetailRecep")

        With rs
            .AddNew
            !SDate = Me.txtSchedDate
            !PatientName = Me.cmbPatientName
            !RegNo = Me.txtRegNo
            .Update
        End With

        With rt
            .AddNew
            !SchedRegNo = Me.txtRegNo
            !TDate = Me.txtSchedDate
            .Update
        End With

        With ri
            .AddNew
            !ItemName = "ConsFee"
            !Price = Me.txtConsFee.Value
            !Dept = "Reception"
            .Update
        End With

        With rd
            .AddNew
            !TransID = DMax("ID", "Trans")
            !ItemRecepID = DMax("ID", "ItemRecep")
            .Update
        End With

        rs.Close
        rt.Close
        ri.Close
        rd.Close

     Set rs = Nothing
     Set rt = Nothing
     Set rd = Nothing
     Set ri = Nothing
     Set db = Nothing
End Sub



Public Sub RecpSchedule2()

    Dim db As DAO.Database
    Dim rs As DAO.Recordset, rt As DAO.Recordset, rd As DAO.Recordset, ri As DAO.Recordset

    Set db = CurrentDb
    Set rt = db.OpenRecordset("Trans")
    Set ri = db.OpenRecordset("ItemRecep")
    Set rd = db.OpenRecordset("TransDetailRecep")

        With ri
            .AddNew
            !ItemName = "IOP"
            !Price = Me.txtIOPFee.Value
            !Dept = "Reception"
            .Update
        End With

        With rd
            .AddNew
            !TransID = DMax("ID", "Trans")
            !ItemRecepID = DMax("ID", "ItemRecep")
            .Update
        End With

        rt.Close
        ri.Close
        rd.Close

     Set rt = Nothing
     Set rd = Nothing
     Set ri = Nothing
     Set db = Nothing
End Sub

<强>更新

为了手动处理ID，您需要在输入数据时确定表 Trans 和 ItemRecep 的下一个ID。

Dim lngTransId as Long
    lngTransId = Nz(DMax("ID", "Trans"),0) + 1 'Next Trans ID

Dim lngItemRecepId as Long
    lngItemRecepId = Nz(DMax("ID", "ItemRecep"),0) + 1 'Next ItemRecep ID

With rt
    .AddNew
    !ID = lngTransId 
    !SchedRegNo = Me.txtRegNo
    !TDate = Me.txtSchedDate
    .Update
End With

With ri
    .AddNew
    !ID = lngItemRecepId 
    !ItemName = "ConsFee"
    !Price = Me.txtConsFee.Value
    !Dept = "Reception"
    .Update
End With

With rd
    .AddNew
    !TransID = lngTransId 
    !ItemRecepID = lngItemRecepId 
    .Update
End With

如何使用MS Access中的DAO将具有相同ID的多个记录插入到表中

1 个答案: