如何通过查询MAx列并添加1将excel数据导出到MS Access

Question

嗨，我正在制作一个Excel表单，其中我的数据库是一个访问权限。

首先我在Excel中对数据进行编码，然后使用命令按钮发布这些数据。

命令按钮中的代码。。首先从Access获取最大数字，并使用该数字完成Excel中要导出到Access的数据。问题是，如果我使用2个及以上的用户同时发布，它会将所有数据合并为一个具有相同编号的数据。我想要的是锁定期初数据，直到发布，因为我需要获得列的最大编号，然后先加1，然后导入一整套数据，包括作为控制编号的最大编号。

我尝试使用Do While adStateOpen<>1和Do While IsRecordBusy=True，然后等待并循环，并将记录集设置为零，而不是关闭两次。但它不会起作用——它会用相同的控制号合并数据。

下面是我的代码

Option Explicit
Sub ImportJEData()
Dim cnn As ADODB.Connection 'dim the ADO collection class
Dim rst As ADODB.Recordset 'dim the ADO recordset class
Dim dbPath
Dim x As Long, i As Long
Dim nextrow As Long
Dim Var
Dim LockType
Dim SQL
Dim IsRecordBusy

'add error handling
On Error GoTo errHandler:
'Variables for file path and last row of data
dbPath = Sheets("Update Version").Range("b1").Value
Set Var = Sheets("JE FORM").Range("F14")
nextrow = Sheets("LEDGERTEMPFORM").Cells(Rows.Count - 5, 1).End(xlUp).Row
'Initialise the collection class variable
Set cnn = New ADODB.Connection
'Create the ADODB recordset object. for Max Number
Set rst = New ADODB.Recordset 'assign memory to the recordset
LockType = adLockPessimistic
'Do While adStateOpen <> 1
Do While IsRecordBusy = True
Application.Wait (Now + TimeValue("0:00:01") / 1000)
Loop
SQL = "SELECT distinct Max(DVNumber),Max(ChckID) FROM DV "
rst.Open SQL, cnn
Sheets("Max").Range("A2").CopyFromRecordset rst
Set rst = Nothing
Set rst = New ADODB.Recordset 'assign memory to the recordset
rst.Open Source:="DV", ActiveConnection:=cnn, _
CursorType:=adOpenDynamic, LockType:=adLockPessimistic, _
Options:=adCmdTable
On Error Resume Next
'you now have the recordset object
'add the values to it
For x = 7 To nextrow
rst.AddNew
For i = 1 To 37
rst(Sheets("LEDGERTEMPFORM").Cells(6, i).Value) = Sheets("LEDGERTEMPFORM").Cells(x, i).Value
Next i
rst.Update
Next x
'close the recordset
rst.Close
' Close the connection
cnn.Close
'clear memory
Set rst = Nothing
Set cnn = Nothing

'Update the sheet

Application.ScreenUpdating = True
'Clear the data
On Error GoTo 0
Exit Sub
errHandler:
'clear memory
Set rst = Nothing
Set cnn = Nothing
MsgBox "Error " & Err.Number & " (" & Err.Description & ") in procedure Export_Data"
End Sub

Answer 1

我终于完成了这段代码。我刚刚在访问中添加了另一个表，其中这样的表是唯一的——使用sql来获取max+1，并将其插入回，如果因为重复而发生错误，则循环它。这是下面的代码

Do
On Error Resume Next 'reset Err.obj.
'Get the Max ID +1
Set rst = Nothing
Set rst = New ADODB.Recordset 'assign memory to the recordset
SQL = "SELECT Max(ApNumber)+1 FROM PayVoucherID "
rst.Open SQL, cnn
'Check if the recordset is empty.
'Copy Recordset to the Temporary Cell
Sheets("MAX").Range("A2").CopyFromRecordset rst
'Insert the Data to Database And Check If no Errors
Sql2 = "INSERT INTO PayVoucherID(ApNumber)Values('" & Sheets("MAX").Range("A2") & "') "
cnn.Execute Sql2
Loop Until (Err.Number = 0)

希望这对ExcelFront用户有所帮助。