Question

In my project I wanna automatically delete accounts that are kept inactive for more that 45days. For testing purpose I took 2 minutes and wrote the following code. But its not working. Can anybody tell me how to perform “Record deletion” if kept inactive for 2 minutes.

My code follows.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.Odbc;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" + "SERVER=localhost;" + "DATABASE=inactive;" + "UID=root;" + "PASSWORD=*********;" + "OPTION=3";
        OdbcConnection MyConnection = new OdbcConnection(MyConString);
        try
        {
            MyConnection.Open();
            OdbcCommand cmd = new OdbcCommand("DELETE name FROM email WHERE date < DATE_SUB(NOW(), INTERVAL 2 MIN)", MyConnection);
            MyConnection.Close();
            Label1.Text = "Done";
        }
        catch (Exception ex)
        {
            Label1.Text = ex.ToString();
        }

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" + "SERVER=localhost;" + "DATABASE=inactive;" + "UID=root;" + "PASSWORD=*********;" + "OPTION=3";
            OdbcConnection MyConnection = new OdbcConnection(MyConString);
            try
            {
                MyConnection.Open();
                OdbcCommand cmd = new OdbcCommand("Select name from email where email=?", MyConnection);
                cmd.Parameters.Add("@email", OdbcType.VarChar, 255).Value = TextBox1.Text;
                OdbcDataReader dr = cmd.ExecuteReader();
                if (dr.HasRows == false)
                {
                    throw new Exception();
                }

                if (dr.Read())
                {
                   Response.Write(dr[0].ToString());
                }
            }
            catch
            {

            }
    }
}

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Updated:

First I created a database named inactive and created a table email. The below screenshot says the record.

Later I used the following code..

protected void Page_Load(object sender, EventArgs e)
{
    string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" + "SERVER=localhost;" + "DATABASE=inactive;" + "UID=root;" + "PASSWORD=******;" + "OPTION=3";
    OdbcConnection MyConnection = new OdbcConnection(MyConString);
    try
    {
        MyConnection.Open();
        OdbcCommand cmd = new OdbcCommand("DELETE FROM email WHERE `date` < DATE_SUB(NOW(), INTERVAL 2 MINUTE)", MyConnection);
        MyConnection.Close();


    }
    catch (Exception ex)
    {
        Label1.Text = ex.ToString();
    }
    }

Answer 1

Your DELETE syntax seems to be wrong, drop the field name “name”, ie

DELETE FROM email WHERE `date` < DATE_SUB(NOW(), INTERVAL 2 MINUTE)

(the delete command deletes whole row, not a single field)