dao/ms-access中违反唯一索引约束的名称是什么 [英] What is the name of the violating unique index constraint in dao / ms-access

问题描述

我正在尝试使用DAO(在MS-Access中)将记录插入表中，并且这样做，我收到错误3022(表明违反了唯一索引).该错误是正确的，因为实际上尝试插入的记录具有在表中已经找到的值.

I am trying to insert a record into a table with DAO (within MS-Access) and doing so, I receive an Error 3022 (which indicates that a unique index is violated). The error is correct since in fact the tried-to-insert record has a value which is already found in the table.

现在，我想找出违反的唯一索引的名称.有人知道我怎么得到这个线索吗?

Now, I'd like to find out the name of the violated unique index. Does someone have a clue how I'd get this?

感谢任何指针 雷内(René)

Thanks for any pointer René

推荐答案

以下是一些注意事项:

Sub WithADO()
''Reference: Microsoft ADO Ext x.x For DLL and Security
Dim catTables As ADOX.Catalog
Dim cn As ADODB.Connection
Dim ndx As Object

Set catTables = CreateObject("ADOX.Catalog")

Set cn = CreateObject("ADODB.Connection")
dbfile = "C:\Docs\LTD.mdb"

    cn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
              "Data Source=" & dbfile & ";"

Set catTables.ActiveConnection = cn

For Each ndx In catTables.Tables("Table1").Indexes
    strlist = ndx.Name & " " & ndx.Properties("Primary Key") & vbCrLf & strlist
Next
MsgBox strlist

Set catTables = Nothing

End Sub

Sub WithDAO()
''Reference: Microsoft DAO x.x Object Library
Dim db As DAO.Database
Dim tdf As TableDef
Dim ndx As Object

Set db = CurrentDb
Set tdf = db.TableDefs("Table1")

For Each ndx In tdf.Indexes

    If ndx.Primary = True Then
        MsgBox ndx.Name
    End If
Next
End Sub

您还可以使用架构.

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