MS Access Tabellenstrukturen exportieren

Ich muss mich gelegentlich mit MS Access beschäftigen und habe eine Möglichkeit gesucht, Tabellenstrukturen zu exportieren. Basierend auf Code von Allen Browne (http://allenbrowne.com/func-06.html) habe ich um seine TableInfo() Funktion eine Exportfunktion geschrieben.

Option Compare Database
 
' based on http://allenbrowne.com/func-06.html
' modified for the export of the information by Uwe Ziegenhagen
 
Sub exportTableInformation()
On Error GoTo TableInfoErr
   ' Purpose:   Display the field names, types, sizes and descriptions for a table.
   ' Argument:  Name of a table in the current database.
   Dim db As DAO.Database
   Dim tdf As DAO.TableDef
   Dim fld As DAO.Field
 
   Set db = CurrentDb()
 
    ' ask user for path of the output file
    ' https://support.office.com/de-de/article/InputBox-Funktion-Eingabefeld-17821927-28b7-4350-b7f1-4786575314d9
    Dim Message, Title, Default, MyValue
    Message = "File will be overwritten..."   ' Set prompt.
    Title = "Enter file of output file"     ' Set title.
    Default = "c:\somefile.csv"               ' Set default.
    ' Display message, title, and default value.
    outputfilePath = InputBox(Message, Title, Default)
 
    n = FreeFile()
    Open outputfilePath For Output As #n
    Print #n, "SOURCE;TABLE;FIELDNAME;FIELDTYPE;SIZE;DESCRIPTION"
   Set db = CurrentDb()
 
    Debug.Print
 
    For Each tdf In db.TableDefs
        ' ignore system and temporary tables
        If Not (tdf.Name Like "MSys*" Or tdf.Name Like "~*") Then
            For Each fld In tdf.Fields
                Debug.Print db.Name & ";" & tdf.Name & ";" & fld.Name & ";" & FieldTypeName(fld) & ";" & fld.Size & ";" & GetDescrip(fld)
                Print #n, db.Name & ";" & tdf.Name & ";" & fld.Name & ";" & FieldTypeName(fld) & ";" & fld.Size & ";" & GetDescrip(fld)
            Next
        End If
    Next
 
    Set tdf = Nothing
    Set db = Nothing
 
    Close #n
 
TableInfoExit:
   Set db = Nothing
   Exit Sub
 
TableInfoErr:
   Select Case Err
   Case 3265&  'Table name invalid
      MsgBox strTableName & " table doesn't exist"
   Case Else
      Debug.Print "TableInfo() Error " & Err & ": " & Error
   End Select
   Resume TableInfoExit
End Sub
 
Function GetDescrip(obj As Object) As String
' http://allenbrowne.com/func-06.html
    On Error Resume Next
 
    GetDescrip = obj.Properties("Description")
 
End Function
 
 
 
Function FieldTypeName(fld As DAO.Field) As String
    'http://allenbrowne.com/func-06.html
    'Purpose: Converts the numeric results of DAO Field.Type to text.
    Dim strReturn As String    'Name to return
 
    Select Case CLng(fld.Type) 'fld.Type is Integer, but constants are Long.
        Case dbBoolean: strReturn = "Yes/No"            ' 1
        Case dbByte: strReturn = "Byte"                 ' 2
        Case dbInteger: strReturn = "Integer"           ' 3
        Case dbLong                                     ' 4
            If (fld.Attributes And dbAutoIncrField) = 0& Then
                strReturn = "Long Integer"
            Else
                strReturn = "AutoNumber"
            End If
        Case dbCurrency: strReturn = "Currency"         ' 5
        Case dbSingle: strReturn = "Single"             ' 6
        Case dbDouble: strReturn = "Double"             ' 7
        Case dbDate: strReturn = "Date/Time"            ' 8
        Case dbBinary: strReturn = "Binary"             ' 9 (no interface)
        Case dbText                                     '10
            If (fld.Attributes And dbFixedField) = 0& Then
                strReturn = "Text"
            Else
                strReturn = "Text (fixed width)"        '(no interface)
            End If
        Case dbLongBinary: strReturn = "OLE Object"     '11
        Case dbMemo                                     '12
            If (fld.Attributes And dbHyperlinkField) = 0& Then
                strReturn = "Memo"
            Else
                strReturn = "Hyperlink"
            End If
        Case dbGUID: strReturn = "GUID"                 '15
 
        'Attached tables only: cannot create these in JET.
        Case dbBigInt: strReturn = "Big Integer"        '16
        Case dbVarBinary: strReturn = "VarBinary"       '17
        Case dbChar: strReturn = "Char"                 '18
        Case dbNumeric: strReturn = "Numeric"           '19
        Case dbDecimal: strReturn = "Decimal"           '20
        Case dbFloat: strReturn = "Float"               '21
        Case dbTime: strReturn = "Time"                 '22
        Case dbTimeStamp: strReturn = "Time Stamp"      '23
 
        'Constants for complex types don't work prior to Access 2007 and later.
        Case 101&: strReturn = "Attachment"         'dbAttachment
        Case 102&: strReturn = "Complex Byte"       'dbComplexByte
        Case 103&: strReturn = "Complex Integer"    'dbComplexInteger
        Case 104&: strReturn = "Complex Long"       'dbComplexLong
        Case 105&: strReturn = "Complex Single"     'dbComplexSingle
        Case 106&: strReturn = "Complex Double"     'dbComplexDouble
        Case 107&: strReturn = "Complex GUID"       'dbComplexGUID
        Case 108&: strReturn = "Complex Decimal"    'dbComplexDecimal
        Case 109&: strReturn = "Complex Text"       'dbComplexText
        Case Else: strReturn = "Field type " & fld.Type & " unknown"
    End Select
 
 
    FieldTypeName = strReturn
 
End Function

Uwe

Uwe Ziegenhagen mag LaTeX und Python, auch gern in Kombination. Hat Dir dieser Beitrag geholfen und möchtest Du Dich dafür bedanken? Dann unterstütze doch vielleicht die Dingfabrik Köln e.V. mit einem kleinen Beitrag. Details zur Bezahlung findest Du unter Spenden für die Dingfabrik.

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