语法错误 (操作符丢失) 在查询表达式
/// <summary>
  /// 产品分页展示
  /// </summary>
  /// <param name="pagesize">每页显示多少条</param>
  /// <param name="pageindex">当前第几页</param>
  /// <returns></returns>
  public List<prod_news> ProductFenYe(int begin, int end)
  {
  try
  {
  string sqlStr = "select*from(select row_number()over(order by infotime desc)as RowIndex,*from prod_news)as a where RowIndex between "+begin+" and "+end;
  OleDbCommand cmd = new OleDbCommand(sqlStr, con);  
  OleDbParameter par1 = new OleDbParameter("@begin",OleDbType.Integer);
  OleDbParameter par2 = new OleDbParameter("@end",OleDbType.Integer);
  par1.Value = begin;
  par2.Value = end;
  cmd.Parameters.Add(par1);
  cmd.Parameters.Add(par2);
  List<prod_news> list = new List<prod_news>();
  con.Open();
  OleDbDataReader reader = cmd.ExecuteReader();
  while (reader.Read())
  {
  prod_news prod_news = new prod_news();
  prod_news.ID = Convert.ToInt32(reader["ID"]);
  prod_news.title = reader["title"].ToString();
  prod_news.content = reader["content"].ToString();
  prod_news.ClassName = reader["ClassName"].ToString();
  prod_news.img = reader["img"].ToString();
  prod_news.okay2 = Convert.ToInt32(reader["okay2"]);
  prod_news.okay = Convert.ToInt32(reader["okay"]);
  prod_news.infotime = Convert.ToDateTime(reader["infotime"]);
  prod_news.hits = Convert.ToInt32(reader["hits"]);
  prod_news.ok = Convert.ToBoolean(reader["ok"]);
  list.Add(prod_news);
  }
  return list;
  }
  catch (Exception ec)
  {

  throw ec;
   
  }


连接的是ACCESS数据库 老提示语法错误 (操作符丢失) 在查询表达式 'row_number()over(order by infotime desc)' 中。 如果是SQL server就没事啊 谁帮解决 谢谢

------解决方案--------------------
把你的sql发到sqlserver专区里面去，可能效果会更好一点。