Clustered 属性示例 (VB)

此示例演示索引的 Clustered 属性。 请注意，Microsoft Jet 数据库不支持聚集索引，因此此示例将为 Northwind 数据库中所有索引的 Clustered 属性返回 False。

' BeginClusteredVB  
Sub Main()  
    On Error GoTo ClusteredXError  
  
    Dim cnn As New ADODB.Connection  
    Dim cat As New ADOX.Catalog  
    Dim tblLoop As ADOX.Table  
    Dim idxLoop As ADOX.Index  
    Dim strCnn As String  
  
    strCnn = "Provider='SQLOLEDB';Data Source='MySqlServer';Initial Catalog='pubs';" & _  
        "Integrated Security='SSPI';"  
    ' Connect to the catalog.  
    cnn.Open strCnn  
    cat.ActiveConnection = cnn  
  
    ' Enumerate the tables.  
    For Each tblLoop In cat.Tables  
        'Enumerate the indexes.  
        For Each idxLoop In tblLoop.Indexes  
            Debug.Print tblLoop.Name & " " & _  
                idxLoop.Name & " " & idxLoop.Clustered  
        Next idxLoop  
    Next tblLoop  
  
    'Clean up.  
    cnn.Close  
    Set cat = Nothing  
    Set cnn = Nothing  
    Exit Sub  
  
ClusteredXError:  
  
    Set cat = Nothing  
  
    If Not cnn Is Nothing Then  
        If cnn.State = adStateOpen Then cnn.Close  
    End If  
    Set cnn = Nothing  
  
    If Err <> 0 Then  
        MsgBox Err.Source & "-->" & Err.Description, , "Error"  
    End If  
End Sub  
' EndClusteredVB  

另请参阅

目录对象 (ADOX)
Clustered 属性 (ADOX)
索引对象 (ADOX)
表对象 (ADOX)