如何从数据库中显示随机10条记录？

Question

如何从数据库中随机显示10个问题？如何检查数据库的答案是否正确？

        db.command(true, "SELECT * FROM question WHERE Age_group='" +category + "'");
        foreach (DataRow item in db.result.Rows)
        {
            question_list.Add (Convert.ToInt32(item["id"]));
        }

        for (int i = 0; i < max_question; i++)
        {
            int index = ran.Next(question_list.Count);
            question_choose.Add(question_list[index]);
            question_list.Remove(question_list[index]);
        }

Answer 1

select top 10 * from table order by newid()

另见"order by newid()" - how does it work?