SqlSugar/Src/Asp.NetCore2/DorisTest/Program.cs

using DorisTest;
using SqlSugar;
using System;
using System.ComponentModel;

namespace OrmTest
{

    public class Program
    {
        static void Main(string[] args)
        { 
            var db = DbHelper.GetNewDb(); 

            db.CodeFirst.InitTables<LogEntity>();

       
            db.CodeFirst.InitTables<Student112>();//drop colum
            db.CodeFirst.InitTables<Student11>();//add column
            db.DbMaintenance.TruncateTable<Student112>();//truncate data

            db.Insertable(new Student11() { Id = 1, Age = 1, Name = "a",DateTime=DateTime.Now })
                .ExecuteCommand();

            db.Insertable(new Student11() { Id = 2, Age = 1, Name = "a", DateTime = DateTime.Now })
                .ExecuteCommand();
            var list=db.Queryable<Student11>().ToList();
            var rows1 = db.Updateable(list.FirstOrDefault()).ExecuteCommand();
            //var rows2 = db.Updateable(list).ExecuteCommand();
            db.Deleteable(list).ExecuteCommand();
        }
    }
    [SugarTable("Student1101")]
    public class Student112
    {
        [SqlSugar.SugarColumn(IsPrimaryKey = true)]
        public int Id { get; set; } // 学生ID (Student ID)
        public string Name { get; set; } // 学生姓名 (Student Name)
        public int Age { get; set; } // 学生年龄 (Student Ag 
    }
    [SugarTable("Student1101")]
    public class Student11
    {
        [SqlSugar.SugarColumn(IsPrimaryKey = true )]
        public int Id { get; set; } // 学生ID (Student ID)
        public string Name { get; set; } // 学生姓名 (Student Name)
        public int Age { get; set; } // 学生年龄 (Student Age)
        [SugarColumn(IsNullable =true)]
        public DateTime DateTime { get; set; }
    }

    /// <summary>
    /// Helper class for database operations
    /// 数据库操作的辅助类
    /// </summary>
    public class DbHelper
    {
        /// <summary>
        /// Database connection string
        /// 数据库连接字符串
        /// </summary>
        public readonly static string Connection = "server=39.170.74.1;port=9031;Database=test;Uid=root;Pwd=lq!1211q!;Pooling=false;";

        /// <summary>
        /// Get a new SqlSugarClient instance with specific configurations
        /// 获取具有特定配置的新 SqlSugarClient 实例
        /// </summary>
        /// <returns>SqlSugarClient instance</returns>
        public static SqlSugarClient GetNewDb()
        {
            var db = new SqlSugarClient(new ConnectionConfig()
            {
                IsAutoCloseConnection = true,
                DbType = DbType.Doris,
                ConnectionString = Connection,
                LanguageType = LanguageType.Default//Set language

            },
            it => {
                // Logging SQL statements and parameters before execution
                // 在执行前记录 SQL 语句和参数
                it.Aop.OnLogExecuting = (sql, para) =>
                {
                    Console.WriteLine(UtilMethods.GetNativeSql(sql, para));
                };
                it.Aop.OnError = ex =>
                {
                };
            });
            return db;
        }
    }
}