将多个Excel文件导入一个Access表时如何添加文件名 [英] How to add file name when importing multiple Excel files to one Access table

问题描述

我正在使用Access VBA将多个Excel文件导入到我的Access数据库中.这将是一个每月过程，其中包含20-50个文件和10-60K个记录.我需要包含一个应用程序名称"，该名称未包含在电子表格文件本身中，而是包含在其文件名中.与其手动将应用程序名称添加到Excel文件中，我不希望通过我的VBA代码添加它.

I am using Access VBA to import multiple Excel files into my Access database. This will be a monthly process with 20-50 files and 10-60K records. I need to include an "Application name" that isn't included within the spreadsheet file itself, but is in its file name. Rather than manually adding the application name to the Excel file I'd like to have it added via my VBA code.

我不擅长Access，并且通过搜索有关如何完成的内容将其中的大部分内容拼凑而成.这是可行的"，但是当我在较大的批次上运行时，会收到错误消息运行时错误'3035':系统资源已超出".当我删除添加文件名(循环记录)的部分时，它运行良好.我认为这是因为这些步骤的效率不高吗?我们将提供任何帮助.

I'm not proficient with Access and have pieced most of this together from searches on how to complete. This "works" but when I run it on larger batches I receive an error "Run-time error '3035': System resource exceeded.' When I remove the section that adds the file name (loop records) it runs fine. I think it's because the steps aren't ordered efficiently? Any help would be appreciated.

 Public Function Import_System_Access_Reports()

 Dim strFolder As String
 Dim db As DAO.Database
 Dim tdf As DAO.TableDef
 Dim fld As DAO.Field
 Dim rstTable As DAO.Recordset
 Dim strFile As String
 Dim strTable As String
 Dim lngPos As Long
 Dim strExtension As String
 Dim lngFileType As Long
 Dim strSQL As String
 Dim strFullFileName As String

 With Application.FileDialog(4) ' msoFileDialogFolderPicker
     If .Show Then
         strFolder = .SelectedItems(1)
     Else
         MsgBox "No folder specified!", vbCritical
         Exit Function
     End If
 End With
 If Right(strFolder, 1) <> "\" Then
     strFolder = strFolder & "\"
 End If
 strFile = Dir(strFolder & "*.xls*")
 Do While strFile <> ""

     lngPos = InStrRev(strFile, ".")
     strTable = "RawData"
     'MsgBox "table is:" & strTable
     strExtension = Mid(strFile, lngPos + 1)
     Select Case strExtension
         Case "xls"
             lngFileType = acSpreadsheetTypeExcel9
         Case "xlsx", "xlsm"
             lngFileType = acSpreadsheetTypeExcel12Xml
         Case "xlsb"
             lngFileType = acSpreadsheetTypeExcel12
     End Select
    DoCmd.TransferSpreadsheet _
         TransferType:=acImport, _
         SpreadsheetType:=lngFileType, _
         TableName:=strTable, _
         FileName:=strFolder & strFile, _
         HasFieldNames:=True ' or False if no headers

'Add and populate the new field
 'set the full file name
 strFullFileName = strFolder & strFile

'Initialize
 Set db = CurrentDb()
 Set tdf = db.TableDefs(strTable)

 'Add the field to the table.
 'tdf.Fields.Append tdf.CreateField("FileName", dbText, 255)

 'Create Recordset
 Set rstTable = db.OpenRecordset(strTable)
 rstTable.MoveFirst

 'Loop records
 Do Until rstTable.EOF
 If (IsNull(rstTable("FileName")) Or rstTable("FileName") = "") Then
     rstTable.Edit
     rstTable("FileName") = strFile
     rstTable.Update
     End If
     rstTable.MoveNext
 Loop

     strFile = Dir

 'Move to the next file
 Loop
     'Clean up
     Set fld = Nothing
     Set tdf = Nothing
     Set db = Nothing
     'rstTable.Close
     Set rstTable = Nothing

End Function

推荐答案

如果您取消了Recordset，则代码将更简单并且运行时性能应该会更好.您可以在每个TransferSpreadsheet

The code is simpler and run-time performance should be much better if you eliminate the Recordset. You can execute an UPDATE after each TransferSpreadsheet

Dim strFolder As String
Dim db As DAO.Database
Dim qdf As DAO.QueryDef
Dim strFile As String
Dim strTable As String
Dim strExtension As String
Dim lngFileType As Long
Dim strSQL As String
Dim strFullFileName As String
Dim varPieces As Variant

' --------------------------------------------------------
'* I left out the part where the user selects strFolder *'
' --------------------------------------------------------

strTable = "RawData" '<- this could be a constant instead of a variable
Set db = CurrentDb()
' make the UPDATE a parameter query ...
strSQL = "UPDATE [" & strTable & "] SET FileName=[pFileName]" & vbCrLf & _
    "WHERE FileName Is Null OR FileName='';"
Set qdf = db.CreateQueryDef(vbNullString, strSQL)

strFile = Dir(strFolder & "*.xls*")
Do While Len(strFile) > 0
    varPieces = Split(strFile, ".")
    strExtension = varPieces(UBound(varPieces))
    Select Case strExtension
    Case "xls"
        lngFileType = acSpreadsheetTypeExcel9
    Case "xlsx", "xlsm"
        lngFileType = acSpreadsheetTypeExcel12Xml
    Case "xlsb"
        lngFileType = acSpreadsheetTypeExcel12
    End Select
    strFullFileName = strFolder & strFile
    DoCmd.TransferSpreadsheet _
            TransferType:=acImport, _
            SpreadsheetType:=lngFileType, _
            TableName:=strTable, _
            FileName:=strFullFileName, _
            HasFieldNames:=True ' or False if no headers

    ' supply the parameter value for the UPDATE and execute it ...        
    qdf.Parameters("pFileName").Value = strFile
    qdf.Execute dbFailOnError

    'Move to the next file
    strFile = Dir
Loop

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