小编典典

通过Microsoft Access创建表DDL

sql

有什么简单的方法可以从Microsoft Access(2007)中检索表创建DDL,还是我必须自己使用VBA对其进行编码以读取表结构?

我大约有30个表要移植到Oracle,如果可以从Access定义中创建表,它将使工作变得更轻松。


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2021-03-17

共1个答案

小编典典

感谢您的其他建议。在等待的过程中,我编写了一些VBA代码来做到这一点。这不是完美的,但是为我完成了工作。

Option Compare Database
Public Function TableCreateDDL(TableDef As TableDef) As String

         Dim fldDef As Field
         Dim FieldIndex As Integer
         Dim fldName As String, fldDataInfo As String
         Dim DDL As String
         Dim TableName As String

         TableName = TableDef.Name
         TableName = Replace(TableName, " ", "_")
         DDL = "create table " & TableName & "(" & vbCrLf
         With TableDef
            For FieldIndex = 0 To .Fields.Count - 1
               Set fldDef = .Fields(FieldIndex)
               With fldDef
                  fldName = .Name
                  fldName = Replace(fldName, " ", "_")
                  Select Case .Type
                     Case dbBoolean
                        fldDataInfo = "nvarchar2"
                     Case dbByte
                        fldDataInfo = "number"
                     Case dbInteger
                        fldDataInfo = "number"
                     Case dbLong
                        fldDataInfo = "number"
                     Case dbCurrency
                        fldDataInfo = "number"
                     Case dbSingle
                        fldDataInfo = "number"
                     Case dbDouble
                        fldDataInfo = "number"
                     Case dbDate
                        fldDataInfo = "date"
                     Case dbText
                        fldDataInfo = "nvarchar2(" & Format$(.Size) & ")"
                     Case dbLongBinary
                        fldDataInfo = "****"
                     Case dbMemo
                        fldDataInfo = "****"
                     Case dbGUID
                        fldDataInfo = "nvarchar2(16)"
                  End Select
               End With
               If FieldIndex > 0 Then
               DDL = DDL & ", " & vbCrLf
               End If
               DDL = DDL & "  " & fldName & " " & fldDataInfo
               Next FieldIndex
         End With
         DDL = DDL & ");"
         TableCreateDDL = DDL
End Function


Sub ExportAllTableCreateDDL()

    Dim lTbl As Long
    Dim dBase As Database
    Dim Handle As Integer

    Set dBase = CurrentDb

    Handle = FreeFile

    Open "c:\export\TableCreateDDL.txt" For Output Access Write As #Handle

    For lTbl = 0 To dBase.TableDefs.Count - 1
         'If the table name is a temporary or system table then ignore it
        If Left(dBase.TableDefs(lTbl).Name, 1) = "~" Or _
        Left(dBase.TableDefs(lTbl).Name, 4) = "MSYS" Then
             '~ indicates a temporary table
             'MSYS indicates a system level table
        Else
          Print #Handle, TableCreateDDL(dBase.TableDefs(lTbl))
        End If
    Next lTbl
    Close Handle
    Set dBase = Nothing
End Sub

我从未声称自己是VB程序员。

2021-03-17