Question

我正在尝试将数据从“ bareme”表复制到“ affiche”表，然后我将从表“ affiche”中检索数据

    public class db
{
    MySqlConnection DefaultConnection = new MySqlConnection(ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString);


    public DataSet enter()
    {
        MySqlCommand com = new MySqlCommand("INSERT INTO affiche (nivJauge,qte_cons) select * from bareme", DefaultConnection);
        MySqlDataAdapter da = new MySqlDataAdapter(com);
        DataSet ds = new DataSet();
        da.Fill(ds); //the ERROR appears here
        return ds;
    }

}

database_Access_Layer.db dblayer = new database_Access_Layer.db();
    public ActionResult affiche()
    {
        return View();
    }

    public JsonResult get_data()
    {
        DataSet ds = dblayer.enter();
        List<jauge> listjauge = new List<jauge>();
        foreach (DataRow dr in ds.Tables[0].Rows)
        {
            listjauge.Add(new jauge
            {
                nivJauge = Convert.ToDouble(dr["nivJauge"]),
                qte_cons = Convert.ToDouble(dr["qte_cons"]),
            });
        }
        return Json(listjauge, JsonRequestBehavior.AllowGet);
    }




   <script>
    $(function () {
        $.get("get_data", {}, function (data) {
            var row;
            $.each(data, function (i, v1) {
                row += "<tr><td>" + v1.nivJauge+ "</td><td>" + v1.qte_cons+ "</td></tr>"
            });
            $("#tbldata").append(row);
    })
    })
</script>

在调试时，此问题出现在“ da.Fill（ds）”行中

错误：MySql.Data.MySqlClient.MySqlException：'字段列表中的未知列'qte_cons'''

Answer 1

嗨，您的问题出在


    INSERT INTO affiche (nivJauge,qte_cons) select * from bareme

将列名称用于select语句。应该是这样的


    INSERT INTO affiche (nivJauge,qte_cons) select first_column_name, second_column_name from bareme

asp.net json将数据从表复制到另一个表

1 个答案: