如何通过VBscript检查MS Access中是否存在表

Question

我有一个 vbscript 试图在 MS Access DB 中创建表，但我想让它像如果表存在，那么它将直接继续输入数据而无需创建表。

我可以做些什么来检查表的存在是否被创建？

我的代码如下，如果表已经存在，它不会继续插入数据。

'Constants
'Const adOpenStatic = 3
Const adOpenDynamic = 2
Const adLockOptimistic = 3
Const adCmdTable = &H0002

Set objConn = CreateObject("ADODB.Connection")
Set objRecordSet = CreateObject("ADODB.Recordset")

'Connect Primary DB
connStr = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & "C:\AIS_Workfolder\Reference\DB\" & "AIS_DataDB.mdb"

'Open Connection
objConn.open connStr

'Create table
objConn.Execute "CREATE TABLE " & "test_table" & "(" & _
  "[ID] COUNTER ," & _
  "[Field1] TEXT(255) ," & _
  "[Field2] TEXT(255) ," & _
  "[Field3] TEXT(255) ," & _



objRecordSet.Open "test_table", objConn, adOpenDynamic, adLockOptimistic, adCmdTable

    objRecordSet.AddNew
      objRecordSet("Field1").value = "testing123"
      objRecordSet("Field2").value = "testing123"
      objRecordSet("Field3").value = "testing123"

Answer 1

或者像这个：

Function TableExists(strTableName)
    Dim RStmp
    TableExists = true
    on error resume next
    RStmp=Conn.Execute("SELECT * FROM ["&strtablename&"]")
    If Err.Number <> 0 Then TableExists=false
    on error goto 0
End Function

Answer 2

使用这样的函数：

If TableExists("test_table") Then
  ' Take action here
Else    
  ' Create table here
End If    

Function TableExists(TabletoFind)
    TableExists = False
    Set adoxConn = CreateObject("ADOX.Catalog")
    Set objConn = Server.CreateObject("ADODB.Connection")
    objConn.Open(ConnStr)
    adoxConn.ActiveConnection = objConn
    IsThere = False
    For Each Table in adoxConn.Tables
        If LCase(Table.Name) = LCase(TabletoFind) Then
            IsThere = True
            Exit For
        End If
    Next
    objConn.Close
    Set objConn = Nothing
    Set adoxConn = Nothing
    If IsThere Then TableExists = True
End Function