using Microsoft.Data.Sqlite;
using System;

namespace TestDB
{
    class Program
    {
        static void Main(string[] args)
        {
            using (var connection = new SqliteConnection("Data Source=FutureMail.db"))
            {
                connection.Open();
                
                var command = connection.CreateCommand();
                command.CommandText = "PRAGMA table_info(Users)";
                
                using (var reader = command.ExecuteReader())
                {
                    Console.WriteLine("Users表结构:");
                    while (reader.Read())
                    {
                        Console.WriteLine($"列名: {reader[1]}, 类型: {reader[2]}, 是否非空: {reader[3]}, 默认值: {reader[4]}, 主键: {reader[5]}");
                    }
                }
            }
        }
    }
}