Проверьте, существует ли таблица доступа

Несколько лет назад я тестировал различные методы, чтобы узнать, существует ли таблица. Вот код для всех из них, как я реализовал, включая мою простую процедуру тестирования.

Public Function TableExists(strTableName As String, Optional ysnRefresh As Boolean, Optional db As DAO.Database) As Boolean
' Originally Based on Tony Toews function in TempTables.MDB, http://www.granite.ab.ca/access/temptables.htm
' Based on testing, when passed an existing database variable, this is the fastest
On Error GoTo errHandler
  Dim tdf As DAO.TableDef

  If db Is Nothing Then Set db = CurrentDb()
  If ysnRefresh Then db.TableDefs.Refresh
  Set tdf = db(strTableName)
  TableExists = True

exitRoutine:
  Set tdf = Nothing
  Exit Function

errHandler:
  Select Case Err.Number
    Case 3265
      TableExists = False
    Case Else
      MsgBox Err.Number & ": " & Err.Description, vbCritical, "Error in mdlBackup.TableExists()"
  End Select
  Resume exitRoutine
End Function

Public Function TableExists2(strTableName As String, Optional ysnRefresh As Boolean, Optional db As DAO.Database) As Boolean
On Error GoTo errHandler
  Dim bolCleanupDB As Boolean
  Dim tdf As DAO.TableDef

  If db Is Nothing Then
     Set db = CurrentDb()
     bolCleanupDB = True
  End If
  If ysnRefresh Then db.TableDefs.Refresh
  For Each tdf In db.TableDefs
    If tdf.name = strTableName Then
       TableExists2 = True
       Exit For
    End If
  Next tdf

exitRoutine:
  Set tdf = Nothing
  If bolCleanupDB Then
     Set db = Nothing
  End If
  Exit Function

errHandler:
  MsgBox Err.Number & ": " & Err.Description, vbCritical, "Error in mdlBackup.TableExists1()"
  Resume exitRoutine
End Function

Public Function TableExists3(strTableName As String, _
     Optional db As DAO.Database) As Boolean
' Based on testing, when NOT passed an existing database variable, this is the fastest
On Error GoTo errHandler
  Dim strSQL As String
  Dim rs As DAO.Recordset

  If db Is Nothing Then Set db = CurrentDb()
  strSQL = "SELECT MSysObjects.Name FROM MSysObjects "
  strSQL = strSQL & "WHERE MSysObjects.Name=" & Chr(34) & strTableName & Chr(34)
  strSQL = strSQL & " AND MSysObjects.Type=6;"
  Set rs = db.OpenRecordset(strSQL)
  TableExists3 = (rs.RecordCount <> 0)

exitRoutine:
  If Not (rs Is Nothing) Then
     rs.Close
     Set rs = Nothing
  End If
  Exit Function

errHandler:
  MsgBox Err.Number & ": " & Err.Description, vbCritical, _
     "Error in TableExists1()"
  Resume exitRoutine
End Function

Public Sub TestTableExists(strTableName As String, intLoopCount As Integer)
  Dim dteStart As Date
  Dim i As Integer
  Dim bolResults As Boolean

  dteStart = Now()
  For i = 0 To intLoopCount
    bolResults = TableExists(strTableName, , CurrentDB())
  Next i
  Debug.Print "TableExists (" & intLoopCount & "): " & Format(Now() - dteStart, "nn:ss")

  dteStart = Now()
  For i = 0 To intLoopCount
    bolResults = TableExists2(strTableName, , CurrentDB())
  Next i
  Debug.Print "TableExists2 (" & intLoopCount & "): " & Format(Now() - dteStart, "nn:ss")

  dteStart = Now()
  For i = 0 To intLoopCount
    bolResults = TableExists3(strTableName, CurrentDB())
  Next i
  Debug.Print "TableExists3 (" & intLoopCount & "): " & Format(Now() - dteStart, "nn:ss")
End Sub

Вот еще одно решение , будет немного быстрее, чем цикл по всем таблицам.

Public Function doesTableExist(strTableName As String) As Boolean
    Dim db As DAO.Database
    Dim td As DAO.TableDef
    Set db = CurrentDb
    On Error Resume Next
    Set td = db.TableDefs(strTableName)
    doesTableExist = (Err.Number = 0)
    Err.Clear
End Function