C operation database added business data value content case school table

The source code local folder is

 D:\LH.Demo\Asp.net\LHQl0.1

Resources are available for a small fee ：

The name is

LHQl0.1

Connect to the database directly from the command line , operation

2 The generation was successful , But a warning came out

2.1 Template entity class source code

using System;
using System.Collections.Generic;

#nullable disable

namespace ConsoleSQLTemplate0._1.Models2
{
    public partial class Demo4Student
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public DateTime Birthday { get; set; }
        public int ChineseScores { get; set; }
        public int MathScores { get; set; }
    }
}

3  The generated database table has no primary key .

Rewrite a table with a primary key , To test , Or modify the join primary key ？