将 powerpivot 数据导出到 csv

Question

我有一个 Excel 工作簿，其中包含 Excel 数据模型中的 powerpivot 数据。我没有用于将数据导入 powerpivot 的文件。我的目标是将数据从 powerpivot 导出到 csv，以便我可以在其他一些软件中使用它。

我在 powerpivot 中找不到任何直接导出选项，并且由于数据大于 110 万行，因此无法将其推送到 Excel 中。

我发现这个 VBA 似乎适用于较小的文件，但对于较大的文件，我会收到超时错误。

Option Explicit

Public Sub ExportToCsv()

    Dim wbTarget As Workbook
    Dim ws As Worksheet
    Dim rs As Object
    Dim sQuery As String

    'Suppress alerts and screen updates
    With Application
        .ScreenUpdating = False
        .DisplayAlerts = False
    End With

    'Bind to active workbook
    Set wbTarget = ActiveWorkbook

    Err.Clear

    On Error GoTo ErrHandler

    'Make sure the model is loaded
    wbTarget.Model.Initialize

    'Send query to the model
    sQuery = "EVALUATE 'combine 2010 - Q2 2015'"
    Set rs = CreateObject("ADODB.Recordset")
    rs.Open sQuery, wbTarget.Model.DataModelConnection.ModelConnection.ADOConnection
    Dim CSVData As String
    CSVData = RecordsetToCSV(rs, True)

    'Write to file
    Open "D:\tempMyFileName.csv" For Binary Access Write As #1
        Put #1, , CSVData
    Close #1

    rs.Close
    Set rs = Nothing

ExitPoint:
    With Application
        .ScreenUpdating = True
        .DisplayAlerts = True
    End With
    Set rs = Nothing
    Exit Sub

ErrHandler:
    MsgBox "An error occured - " & Err.Description, vbOKOnly
    Resume ExitPoint
End Sub



Public Function RecordsetToCSV(rsData As ADODB.Recordset, _
        Optional ShowColumnNames As Boolean = True, _
        Optional NULLStr As String = "") As String
    'Function returns a string to be saved as .CSV file
    'Option: save column titles

    Dim K As Long, RetStr As String

    If ShowColumnNames Then
        For K = 0 To rsData.Fields.Count - 1
            RetStr = RetStr & ",""" & rsData.Fields(K).Name & """"
        Next K

        RetStr = Mid(RetStr, 2) & vbNewLine
    End If

    RetStr = RetStr & """" & rsData.GetString(adClipString, -1, """,""", """" & vbNewLine & """", NULLStr)
    RetStr = Left(RetStr, Len(RetStr) - 3)

    RecordsetToCSV = RetStr
End Function

Answer 1

通过一次执行 1k 行并使用FileSystemObject，这似乎可以在没有导出文件大小限制的情况下工作。您需要添加 Microsoft ActiveX 数据对象库和 Microsoft 脚本运行时作为参考。

Option Explicit

Public FSO As New FileSystemObject

Public Sub ExportToCsv()

    Dim wbTarget As Workbook
    Dim ws As Worksheet
    Dim rs As Object
    Dim sQuery As String

    'Suppress alerts and screen updates
    With Application
        .ScreenUpdating = False
        .DisplayAlerts = False
    End With

    'Bind to active workbook
    Set wbTarget = ActiveWorkbook

    Err.Clear

    On Error GoTo ErrHandler

    'Make sure the model is loaded
    wbTarget.Model.Initialize

    'Send query to the model
    sQuery = "EVALUATE <Query>"
    Set rs = CreateObject("ADODB.Recordset")
    rs.Open sQuery, wbTarget.Model.DataModelConnection.ModelConnection.ADOConnection
    Dim CSVData As String
    Call WriteRecordsetToCSV(rs, "<ExportPath>", True)

    rs.Close
    Set rs = Nothing

ExitPoint:
    With Application
        .ScreenUpdating = True
        .DisplayAlerts = True
    End With
    Set rs = Nothing
    Exit Sub

ErrHandler:
    MsgBox "An error occured - " & Err.Description, vbOKOnly
    Resume ExitPoint
End Sub



Public Sub WriteRecordsetToCSV(rsData As ADODB.Recordset, _
        FileName As String, _
        Optional ShowColumnNames As Boolean = True, _
        Optional NULLStr As String = "")
    'Function returns a string to be saved as .CSV file
    'Option: save column titles

    Dim TxtStr As TextStream
    Dim K As Long, CSVData As String

    'Open file
    Set TxtStr = FSO.CreateTextFile(FileName, True, True)

    If ShowColumnNames Then
        For K = 0 To rsData.Fields.Count - 1
            CSVData = CSVData & ",""" & rsData.Fields(K).Name & """"
        Next K

        CSVData = Mid(CSVData, 2) & vbNewLine
        TxtStr.Write CSVData
    End If

    Do While rsData.EOF = False
        CSVData = """" & rsData.GetString(adClipString, 1000, """,""", """" & vbNewLine & """", NULLStr)
        CSVData = Left(CSVData, Len(CSVData) - IIf(rsData.EOF, 3, 2))
        TxtStr.Write CSVData
    Loop

    TxtStr.Close

End Sub