帮助事例读取Access库内表记录为什么总是先读取第二条记录？
模仿帮助事例进行测试，发现总是先读第二条表记录，是什么原因，应该如何处理？原事例如下：
'查询没有排序
Dim queryString As String = "Select * From 表名"
Public Sub ReadData(ByVal connectionString As String)
Dim queryString As String = _
"SELECT OrderID, CustomerID FROM Orders"

Using connection As New OracleConnection(connectionString)
Dim command As New OracleCommand(queryString, connection)
connection.Open()

Dim reader As OracleDataReader
reader = command.ExecuteReader()

' Always call Read before accessing data.
While reader.Read()
Console.WriteLine(reader.GetInt32(0) & ", " & reader.GetString(1))
End While

' Always call Close when done reading.
reader.Close()
End Using
End Sub


[解决办法]
从数据库读取到缓存后,数据是随机排序的,所以取哪一条语句先也是随机的,只有你排序才会按你的规则获取数据