db.Database.CreateQuery C# (CSharp) Method

        public MySqlCommand CreateQuery()
        {
            return _con.CreateCommand();
        }

 protected override void HandleRequest()
 {
     using (var db = new Database())
     {
         if (Account == null) BadLogin();
         else
         {
             var cmd = db.CreateQuery();
             cmd.CommandText = "SELECT fame FROM stats WHERE accId=@accId;";
             cmd.Parameters.AddWithValue("@accId", Account.AccountId);
             if ((int)cmd.ExecuteScalar() < 5000) WriteErrorLine("Not enough fame");
             else
             {
                 cmd = db.CreateQuery();
                 cmd.CommandText = "UPDATE stats set fame = MIN(fame - 5000, 0) WHERE accId=@accId;";
                 cmd.Parameters.AddWithValue("@accId", Account.AccountId);
                 if (cmd.ExecuteNonQuery() > 0)
                 {
                     cmd = db.CreateQuery();
                     cmd.CommandText = "UPDATE accounts SET maxCharSlot = maxCharSlot + 1 WHERE id=@accId;";
                     cmd.Parameters.AddWithValue("@accId", Account.AccountId);
                     if (cmd.ExecuteNonQuery() > 0) Success();
                     else WriteErrorLine("Internal Error");
                 }
                 else WriteErrorLine("Internal Error");
             }
         }
     }
 }