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[開源].NET CORE與MySql更配, MySqlSugar ORM框架 3.x，mysqlsugarorm

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[開源].NET CORE與MySql更配, MySqlSugar ORM框架 3.x，mysqlsugarorm

MySqlSugar 3.X API

作為支持.NET CORE 為數不多的ORM之一，除了具有優越的性能外，還擁有強大的功能，不只是滿足你的增,刪,查和改。實質上擁有更多你想像不到的功能,當你需要實現某個功能時會發現有這個功能太棒了。

所有版本

ASP.NET 4.0+ MSSQL https://github.com/sunkaixuan/SqlSugar

ASP.NET CORE MSSQL https://github.com/sunkaixuan/ASP_NET_CORE_ORM_SqlSugar

ASP.NET 4.0+ MYSQL https://github.com/sunkaixuan/MySqlSugar

ASP.NET CORE MYSQL https://github.com/sunkaixuan/ASP_NET_CORE_ORM_MySqlSugar

ASP.NET 4.0+ Sqlite https://github.com/sunkaixuan/SqliteSugar

ASP.NET 4.0+ ORACLE https://github.com/sunkaixuan/OracleSugar

優點

SqlSugar 是一款小巧，並且功能齊全的ORM，並不需要像Dapper一樣依賴第三方擴展

SqlSugar 語法易用簡單，有漂亮的拉姆達語法，也支持Dapper SQL和ADO.NET（存儲過程等）的所有功能

SqlSugar 性能達到原生水准，遠超 Dapper和EF CORE。

SqlSugar 支持.NET CORE , 多個數據庫

SqlSugar 體積小巧只有150K是EF的30分之1 ，NUGET直接可以下載

連接數據庫

1.簡單用法

using(var db = new SqlSugarClient(ConnectionString)){

    //use object
    var list=db.Queryable<T>().ToList();

}

2.打包用法，推薦

/// <summary>
/// SqlSugar
/// </summary>
public class SugarDao
{
    private SugarDao()
    {

    }
    public static string ConnectionString
    {
        get
        {
            string reval = "server=.;uid=sa;pwd=sasa;database=SqlSugarTest"; 
            return reval;
        }
    }
    public static SqlSugarClient GetInstance()
    {
        var db = new SqlSugarClient(ConnectionString);
        db.IsEnableLogEvent = true;//Enable log events
        db.LogEventStarting = (sql, par) => { Console.WriteLine(sql + " " + par+"\r\n"); };
        return db;
    }
}

使用打包對象

using (var db = SugarDao.GetInstance())
{
    var list=db.Queryable<T>().ToList();
}

3.高級玩法，基於IOC和指揮官模式的DEMO

https://github.com/sunkaixuan/ASPNETMVCCRUDDEMO

查詢

1. Queryable 拉姆達查詢

                //查詢所有
                var student = db.Queryable<Student>().ToList();
                var studentDynamic = db.Queryable<Student>().ToDynamic();
                var studentJson = db.Queryable<Student>().ToJson();


                //查詢單條
                var single = db.Queryable<Student>().Single(c => c.id == 1);
                //查詢單條根據主鍵
                var singleByPk = db.Queryable<Student>().InSingle(1);
                //查詢單條沒有記錄返回空對象
                var singleOrDefault = db.Queryable<Student>().SingleOrDefault(c => c.id == 11111111);
                //查詢單條沒有記錄返回空對象
                var single2 = db.Queryable<Student>().Where(c => c.id == 1).SingleOrDefault();

                //查詢第一條
                var first = db.Queryable<Student>().Where(c => c.id == 1).First();
                var first2 = db.Queryable<Student>().Where(c => c.id == 1).FirstOrDefault();

                //取11-20條
                var page1 = db.Queryable<Student>().Where(c => c.id > 10).OrderBy(it => it.id).Skip(10).Take(10).ToList();

                //取11-20條  等於 Skip(pageIndex-1)*pageSize).Take(pageSize) 等於  between (pageIndex-1)*pageSize and  pageIndex*pageSize
                var page2 = db.Queryable<Student>().Where(c => c.id > 10).OrderBy(it => it.id).ToPageList(2, 10);

                //查詢條數
                var count = db.Queryable<Student>().Where(c => c.id > 10).Count();

                //從第2條開始以後取所有
                var skip = db.Queryable<Student>().Where(c => c.id > 10).OrderBy(it => it.id).Skip(2).ToList();

                //取前2條
                var take = db.Queryable<Student>().Where(c => c.id > 10).OrderBy(it => it.id).Take(2).ToList();

                //Not like 
                string conval = "a";
                var notLike = db.Queryable<Student>().Where(c => !c.name.Contains(conval.ToString())).ToList();

                //Like
                conval = "三";
                var like = db.Queryable<Student>().Where(c => c.name.Contains(conval)).ToList();

                //支持字符串Where 讓你解決，更復雜的查詢
                var student12 = db.Queryable<Student>().Where(c => "a" == "a").Where("id>@id", new { id = 1 }).ToList();
                var student13 = db.Queryable<Student>().Where(c => "a" == "a").Where("id>100 and id in( select 1)").ToList();


                //存在記錄反回true，則否返回false
                bool isAny100 = db.Queryable<Student>().Any(c => c.id == 100);
                bool isAny1 = db.Queryable<Student>().Any(c => c.id == 1);


                //獲取最大Id
                object maxId = db.Queryable<Student>().Max(it => it.id);
                int maxId1 = db.Queryable<Student>().Max(it => it.id).ObjToInt();//拉姆達
                int maxId2 = db.Queryable<Student>().Max<int>("id"); //字符串寫法

                //獲取最小
                int minId1 = db.Queryable<Student>().Where(c => c.id > 0).Min(it => it.id).ObjToInt();//拉姆達
                int minId2 = db.Queryable<Student>().Where(c => c.id > 0).Min<int>("id");//字符串寫法


                //order By 
                var orderList = db.Queryable<Student>().OrderBy("id desc,name asc").ToList();//字符串支持多個排序
                //可以多個order by表達示
                var order2List = db.Queryable<Student>().OrderBy(it => it.name).OrderBy(it => it.id, OrderByType.desc).ToList(); // order by name as ,order by id desc

                //In
                var intArray = new[] { "5", "2", "3" };
                var intList = intArray.ToList();
                var listnew = db.Queryable<Student>().Where(it => intArray.Contains(it.name)).ToList();
                var list0 = db.Queryable<Student>().In(it => it.id, 1, 2, 3).ToList();
                var list1 = db.Queryable<Student>().In(it => it.id, intArray).ToList();
                var list2 = db.Queryable<Student>().In("id", intArray).ToList();
                var list3 = db.Queryable<Student>().In(it => it.id, intList).ToList();
                var list4 = db.Queryable<Student>().In("id", intList).ToList();
                var list6 = db.Queryable<Student>().In(intList).ToList();//不設置字段默認主鍵

                //分組查詢
                var list7 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy(it => it.sex).Select("sex,count(*) Count").ToDynamic();
                var list8 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy(it => it.sex).GroupBy(it => it.id).Select("id,sex,count(*) Count").ToDynamic();
                List<StudentGroup> list9 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy(it => it.sex).Select<StudentGroup>("Sex,count(*) Count").ToList();
                List<StudentGroup> list10 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy("sex").Select<StudentGroup>("Sex,count(*) Count").ToList();
                //SELECT Sex,Count=count(*)  FROM Student  WHERE 1=1  AND  (id < 20)    GROUP BY Sex --生成結果



                //2表關聯查詢
                var jList = db.Queryable<Student>()
                .JoinTable<School>((s1, s2) => s1.sch_id == s2.id) //默認left join
                .Where<School>((s1, s2) => s1.id == 1)
                .Select("s1.*,s2.name as schName")
                .ToDynamic();

                /*等於同於
                 SELECT s1.*,s2.name as schName 
                 FROM [Student]  s1 
                 LEFT JOIN [School]  s2 ON  s1.sch_id  = s2.id 
                 WHERE  s1.id  = 1 */

                //2表關聯查詢並分頁
                var jList2 = db.Queryable<Student>()
                .JoinTable<School>((s1, s2) => s1.sch_id == s2.id) //默認left join
                    //如果要用inner join這麼寫
                    //.JoinTable<School>((s1, s2) => s1.sch_id == s2.id ,JoinType.INNER)
                .Where<School>((s1, s2) => s1.id > 1)
                .OrderBy(s1 => s1.name)
                .Skip(10)
                .Take(20)
                .Select("s1.*,s2.name as schName")
                .ToDynamic();

                //3表查詢並分頁
                var jList3 = db.Queryable<Student>()
               .JoinTable<School>((s1, s2) => s1.sch_id == s2.id) // left join  School s2  on s1.id=s2.id
               .JoinTable<School>((s1, s3) => s1.sch_id == s3.id) // left join  School s3  on s1.id=s3.id
               .Where<School>((s1, s2) => s1.id > 1)  // where s1.id>1
               .Where(s1 => s1.id > 0)
               .OrderBy<School>((s1, s2) => s1.id) //order by s1.id 多個order可以  .oderBy().orderby 疊加 
               .Skip(10)
               .Take(20)
               .Select("s1.*,s2.name as schName,s3.name as schName2")//select目前只支持這種寫法
               .ToDynamic();


                //上面的方式都是與第一張表join，第三張表想與第二張表join寫法如下
                List<V_Student> jList4 =
                 db.Queryable<Student>()
                 .JoinTable<School>((s1, s2) => s1.sch_id == s2.id) // left join  School s2  on s1.id=s2.id
                 .JoinTable<School, Area>((s1, s2, a1) => a1.id == s2.AreaId)// left join  Area a1  on a1.id=s2.AreaId  第三張表與第二張表關聯
                 .JoinTable<Area, School>((s1, a1, s3) => a1.id == s3.AreaId)// left join  School s3  on a1.id=s3.AreaId  第四第表第三張表關聯
                 .JoinTable<School>((s1, s4) => s1.sch_id == s4.id) // left join  School s2  on s1.id=s4.id
                 .Select<School, Area, V_Student>((s1, s2, a1) => new V_Student { id = s1.id, name = s1.name, SchoolName = s2.name, AreaName = a1.name }).ToList();

                //等同於
                //SELECT id = s1.id, name = s1.name, SchoolName = s2.name, AreaName = a1.name  
                //FROM [Student]   s1 
                //LEFT JOIN School  s2 ON  ( s1.sch_id  = s2.id )    
                //LEFT JOIN Area  a1 ON  ( a1.id  = s2.AreaId )     //第三張表與第二張表關聯
                //LEFT JOIN School  s3 ON  ( a1.id  = s3.AreaId )   //第四張表與第三張表關聯
                //LEFT JOIN School  s4 ON  ( s1.sch_id  = s4.id )    
                //WHERE 1=1    


                //Join子查詢語句加分頁的寫法
                var childQuery = db.Queryable<Area>().Where("id=@id").Select(it => new { id = it.id }).ToSql();//創建子查詢SQL
                string childTableName =SqlSugarTool.PackagingSQL(childQuery.Key);//將SQL語句用()包成表
                var queryable = db.Queryable<Student>()
                 .JoinTable<School>((s1, s2) => s1.sch_id == s2.id)  //LEFT JOIN School  s2 ON  ( s1.sch_id  = s2.id )  
                 .JoinTable(childTableName, "a1", "a1.id=s2.areaid", new { id = 1 }, JoinType.INNER) //INNER JOIN (SELECT *  FROM [Area]   WHERE 1=1  AND id=@id   ) a1 ON a1.id=s2.areaid
                 .OrderBy(s1 => s1.id);

                var list = queryable.Select<School, Area, V_Student>((s1, s2, a1) => new V_Student { id = s1.id, name = s1.name, SchoolName = s2.name, AreaName = a1.name })
                    .ToPageList(0, 200);
                var count2 = queryable.Count();


                //拼接例子
                var queryable2 = db.Queryable<Student>().Where(it => true);
                if (maxId.ObjToInt() == 1)
                {
                    queryable2.Where(it => it.id == 1);
                }
                else
                {
                    queryable2.Where(it => it.id == 2);
                }
                var listJoin = queryable2.ToList();


                //queryable和SqlSugarClient解耦
                var par = new Queryable<Student>().Where(it => it.id == 1);//聲名沒有connection對象的Queryable
                par.DB = db;
                var listPar = par.ToList();


                //查看生成的sql和參數
                var id = 1;
                var sqlAndPars = db.Queryable<Student>().Where(it => it.id == id).OrderBy(it => it.id).ToSql();



                //拉姆達支持的函數操作
                var par1 = "2015-1-1"; var par2 = "   我 有空格A, ";
                var r1 = db.Queryable<Student>().Where(it => it.name == par1.ObjToString()).ToList(); //ObjToString會將null轉轉成""
                var r2 = db.Queryable<InsertTest>().Where(it => it.d1 == par1.ObjToDate()).ToList();
                var r3 = db.Queryable<InsertTest>().Where(it => it.id == 1.ObjToInt()).ToList();//ObjToInt會將null轉轉成0
                var r4 = db.Queryable<InsertTest>().Where(it => it.id == 2.ObjToDecimal()).ToList();
                var r5 = db.Queryable<InsertTest>().Where(it => it.id == 3.ObjToMoney()).ToList();
                var r6 = db.Queryable<InsertTest>().Where(it => it.v1 == par2.Trim()).ToList();
                var convert1 = db.Queryable<Student>().Where(c => c.name == "a".ToString()).ToList();
                var convert2 = db.Queryable<Student>().Where(c => c.id == Convert.ToInt32("1")).ToList();
                var convert3 = db.Queryable<Student>().Where(c => c.name == par2.ToLower()).ToList();
                var convert4 = db.Queryable<Student>().Where(c => c.name == par2.ToUpper()).ToList();
                var convert5= db.Queryable<Student>().Where(c => DateTime.Now > Convert.ToDateTime("2015-1-1")).ToList();
                var c1 = db.Queryable<Student>().Where(c => c.name.Contains("a")).ToList();
                var c2 = db.Queryable<Student>().Where(c => c.name.StartsWith("a")).ToList();
                var c3 = db.Queryable<Student>().Where(c => c.name.EndsWith("a")).ToList();
                var c4 = db.Queryable<Student>().Where(c => !string.IsNullOrEmpty(c.name)).ToList();
                var c5 = db.Queryable<Student>().Where(c => c.name.Equals("小傑")).ToList();
                var c6 = db.Queryable<Student>().Where(c => c.name.Length > 4).ToList();
                var time = db.Queryable<InsertTest>().Where(c => c.d1>DateTime.Now.AddDays(1)).ToList();
                var time2 = db.Queryable<InsertTest>().Where(c => c.d1 > DateTime.Now.AddYears(1)).ToList();
                var time3 = db.Queryable<InsertTest>().Where(c => c.d1 > DateTime.Now.AddMonths(1)).ToList();

2. SqlQuery 原生SQL查詢

                //轉成list
                List<Student> list1 = db.SqlQuery<Student>("select * from Student");
                //轉成list帶參
                List<Student> list2 = db.SqlQuery<Student>("select * from Student where id=@id", new { id = 1 });
                //轉成dynamic
                dynamic list3 = db.SqlQueryDynamic("select * from student");
                //轉成json
                string list4 = db.SqlQueryJson("select * from student");
                //返回int
                var list5 = db.SqlQuery<int>("select id from Student limit 0,1").SingleOrDefault();
                //反回鍵值
                Dictionary<string, string> list6 = db.SqlQuery<KeyValuePair<string, string>>("select id,name from Student").ToDictionary(it => it.Key, it => it.Value);
                //反回List<string[]>
                var list7 = db.SqlQuery<string[]>("select  id,name from Student limit 0,1").SingleOrDefault();
                //存儲過程
                //var spResult = db.SqlQuery<School>("exec sp_school @p1,@p2", new { p1 = 1, p2 = 2 });

                //存儲過程加Output 
                //var pars = SqlSugarTool.GetParameters(new { p1 = 1,p2=0 }); //將匿名對象轉成SqlParameter
                //db.IsClearParameters = false;//禁止清除參數
                //pars[1].Direction = ParameterDirection.Output; //將p2設為 output
                //var spResult2 = db.SqlQuery<School>("exec sp_school @p1,@p2 output", pars);
                //db.IsClearParameters = true;//啟用清除參數
                //var outPutValue = pars[1].Value;//獲取output @p2的值


                ////存儲過程優化操作
                //var pars2 = SqlSugarTool.GetParameters(new { p1 = 1, p2 = 0 }); //將匿名對象轉成SqlParameter
                //db.CommandType = CommandType.StoredProcedure;//指定為存儲過程可比上面少寫EXEC和參數
                //var spResult3 = db.SqlQuery<School>("sp_school", pars2);
                //db.CommandType = CommandType.Text;//還原回默認


                //獲取第一行第一列的值
                string v1 = db.GetString("select '張三' as name");
                int v2 = db.GetInt("select 1 as name");
                double v3 = db.GetDouble("select 1 as name");
                decimal v4 = db.GetDecimal("select 1 as name");

3.Sqlable 高級SQL拼接器

//多表查詢 List<School> dataList = db.Sqlable() .From("school", "s") .Join("student", "st", "st.id", "s.id", JoinType.INNER) .Join("student", "st2", "st2.id", "st.id", JoinType.LEFT) .Where("s.id>100 and s.id<@id") .Where("1=1")//可以多個WHERE .OrderBy("id") .SelectToList<School/*新的Model我這裡沒有所以寫的School*/>("st.*", new { id = 1 }); //多表分頁 List<School> dataPageList = db.Sqlable() .From("school", "s") .Join("student", "st", "st.id", "s.id", JoinType.INNER) .Join("student", "st2", "st2.id", "st.id", JoinType.LEFT) .Where("s.id>100 and s.id<100") .SelectToPageList<School>("st.*", "s.id", 1, 10); //多表分頁WHERE加子查詢 List<School> dataPageList2 = db.Sqlable() .From("school", "s") .Join("student", "st", "st.id", "s.id", JoinType.INNER) .Join("student", "st2", "st2.id", "st.id", JoinType.LEFT) .Where("s.id>100 and s.id<100 and s.id in (select 1 )" /*這裡面寫子查詢都可以*/) .SelectToPageList<School>("st.*", "s.id", 1, 10); //--------轉成List Dynmaic 或者 Json-----// //不分頁 var list1 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", JoinType.INNER).SelectToDynamic("*", new { id = 1 }); var list2 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", JoinType.INNER).SelectToJson("*", new { id = 1 }); var list3 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", JoinType.INNER).SelectToDataTable("*", new { id = 1 }); //分頁 var list4 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", JoinType.INNER).SelectToPageDynamic("s.*", "l.id", 1, 10, new { id = 1 }); var list5 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", JoinType.INNER).SelectToPageTable("s.*", "l.id", 1, 10, new { id = 1 }); var list6 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", JoinType.INNER).SelectToPageDynamic("s.*", "l.id", 1, 10, new { id = 1 }); //--------拼接-----// Sqlable sable = db.Sqlable().From<Student>("s").Join<School>("l", "s.sch_id", "l.id", JoinType.INNER); string name = "a"; int id = 1; if (!string.IsNullOrEmpty(name)) { sable = sable.Where("s.name=@name"); } if (!string.IsNullOrEmpty(name)) { sable = sable.Where("s.id=@id or s.id=100"); } if (id > 0) { sable = sable.Where("l.id in(1)");//where加子查詢 } var pars = new { id = id, name = name }; int pageCount = sable.Count(pars); var list7 = sable.SelectToPageList<Student>("s.*", "l.id desc", 1, 20, pars); View Code

插入

支持了高性能批量插入，讓你事辦功倍

 db.Insert(GetInsertItem()); //插入一條記錄 (有主鍵也好，沒主鍵也好，有自增列也好都可以插進去)


                db.InsertRange(GetInsertList()); //批量插入 支持（別名表等功能）


                db.SqlBulkCopy(GetInsertList()); //批量插入 適合海量數據插入



                //設置不插入列
                db.DisableInsertColumns = new string[] { "sex" };//sex列將不會插入值
                Student s = new Student()
                {
                    name = "張" + new Random().Next(1, int.MaxValue),
                    sex = "gril"
                };

                var id = db.Insert(s); //插入

                //查詢剛插入的sex是否有值
                var sex = db.Queryable<Student>().Single(it => it.id == id.ObjToInt()).sex;//無值
                var name = db.Queryable<Student>().Single(it => it.id == id.ObjToInt()).name;//有值


                //SqlBulkCopy同樣支持不挺入列設置
                db.SqlBulkCopy(GetInsertList());

更新

                //指定列更新
                db.Update<School>(new { name = "藍翔14" }, it => it.id == 14); //只更新name列
                db.Update<School, int>(new { name = "藍翔11 23 12", areaId = 2 }, 11, 23, 12);
                db.Update<School, string>(new { name = "藍翔2" }, new string[] { "11", "21" });
                db.Update<School>(new { name = "藍翔2" }, it => it.id == 100);
                var array=new int[]{1,2,3};
                db.Update<School>(new { name = "藍翔2" }, it => array.Contains(it.id));// id in 1,2,3


                //支持字典更新，適合動態權限
                var dic = new Dictionary<string, string>();
                dic.Add("name", "第十三條");
                dic.Add("areaId", "1");
                db.Update<School, int>(dic, 13);


                //整個實體更新
                db.Update(new School { id = 16, name = "藍翔16", AreaId = 1 });
                db.Update<School>(new School { id = 12, name = "藍翔12", AreaId = 2 }, it => it.id == 18);
                db.Update<School>(new School() { id = 11, name = "青鳥11" });

                //設置不更新列
                db.DisableUpdateColumns = new string[] { "CreateTime" };//設置CreateTime不更新

                TestUpdateColumns updObj = new TestUpdateColumns()
                {
                    VGUID = Guid.Parse("542b5a27-6984-47c7-a8ee-359e483c8470"),
                    Name = "xx",
                    Name2 = "xx2",
                    IdentityField = 0,
                    CreateTime = null
                };

                //CreateTime將不會被更新
                db.Update(updObj);
                //以前實現這種更新需要用指定列的方式實現，現在就簡單多了。



                //批量更新   數據量小時建議使用
                var updateResult = db.UpdateRange(GetUpdateList());

                //批量更新  數據量大時建議使用
                var updateResult2 = db.SqlBulkReplace(GetUpdateList2());

刪除

                //刪除根據主鍵
                db.Delete<School, int>(10);

                //刪除根據表達示
                db.Delete<School>(it => it.id > 100);//支持it=>array.contains(it.id)
 
                //主鍵批量刪除
                db.Delete<School, string>(new string[] { "100", "101", "102" });

                //非主鍵批量刪除
                db.Delete<School, string>(it => it.name, new string[] { "" });
                db.Delete<School, int>(it => it.id, new int[] { 20, 22 });


                //根據實體賦值實體一定要有主鍵，並且要有值。
                db.Delete(new School() { id = 200 });

                //根據字符串刪除
                db.Delete<School>("id=@id", new { id = 100 });

                //假刪除
                //db.FalseDelete<school>("is_del", 100);
                //等同於 update school set is_del=1 where id in(100)
                //db.FalseDelete<school>("is_del", it=>it.id==100);

1、枚舉支持

var stuList = db.Queryable<Student>().ToList(); db.Insert<Student>(new Student() { sch_id = SchoolEnum.北大青鳥 }); db.Update<Student>(new Student() { sch_id = SchoolEnum.it清華, id = 11 }); var stuList2 = db.Queryable<Student>().Where(it => it.sch_id == SchoolEnum.全智).ToList(); View Code

2、實體生成加T4

View Code

使用T4

詳細教程：

http://www.cnblogs.com/sunkaixuan/p/5751503.html

3、ADO.NET

                var r1 = db.GetDataTable("select * from student");
                var r2 = db.GetSingle<Student>("select  * from student LIMIT 0,1");
                var r3 = db.GetScalar("select  count(1) from student");
                var r4 = db.GetReader("select  count(1) from student");
                r4.Dispose();
                var r5 = db.GetString("select   name from student LIMIT 0,1");
                var r6 = db.ExecuteCommand("select 1");


                //參數支持
                var p1 = db.GetDataTable("select * from student where id=@id", new {id=1 });
                var p2 = db.GetDataTable("select * from student where id=@id", new Dictionary<string, object>() { { "id", "1" } });//目前只支持 Dictionary<string, object>和Dictionary<string, string>
                var p3 = db.GetDataTable("select * from student where id=@id", new MySqlParameter("@id",1) );

4、日志記錄功能

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NewTest.Dao;
using Models;
using System.Data.SqlClient;
using MySqlSugar;

namespace NewTest.Demos
{
    //日志記錄功能
    public class Log : IDemos
    {
       
        public void Init()
        {
            Console.WriteLine("啟動Log.Init");
            using (var db = SugarDemoDao.GetInstance())
            {

                var a1 = db.Queryable<Student>().Where(it => it.id == 1).ToList();
                var a2 = db.Queryable<Student>().OrderBy(it => it.id).ToList();
            }
        }

        public class SugarConfigs
        {
            public static Action<string, string> LogEventStarting = (sql, pars) =>
            {
                Console.WriteLine("starting:" + sql + " " + pars);
                
                using (var db = SugarDemoDao.GetInstance())
                {
                    //日志記錄件事件裡面用到數據庫操作 IsEnableLogEvent一定要為false否則將引起死循環，並且要新開一個數據實例 像我這樣寫就沒問題。
                    db.IsEnableLogEvent = false;
                    db.ExecuteCommand("select 1");
                }
            };
            public static Action<string, string> LogEventCompleted = (sql, pars) =>
            {
                Console.WriteLine("completed:" + sql + " " + pars);
            };
        }

        /// <summary>
        /// SqlSugar
        /// </summary>
        public class SugarDemoDao
        {

            public static SqlSugarClient GetInstance()
            {
                var db = new SqlSugarClient(SugarDao.ConnectionString);
                db.IsEnableLogEvent = true;//啟用日志事件
                db.LogEventStarting = SugarConfigs.LogEventStarting;
                db.LogEventCompleted = SugarConfigs.LogEventCompleted;
                return db;
            }
        }
    }
}

5、別名表功能

using System; using System.Collections.Generic; using System.Linq; using System.Text; using NewTest.Dao; using Models; using System.Data.SqlClient; using MySqlSugar; namespace NewTest.Demos { //別名表的功能 public class MappingTable : IDemos { public void Init() { Console.WriteLine("啟動MappingTable.Init"); //單個設置 using (var db = SugarDao.GetInstance()) { var list = db.Queryable<V_Student>("Student").ToList();//查詢的是 select * from student 而我的實體名稱為V_Student } //全局設置 using (var db = SugarFactory.GetInstance()) { var list = db.Queryable<V_Student>().ToList();//查詢的是 select * from student 而我的實體名稱為V_Student } } /// <summary> /// 全局配置類 /// </summary> public class SugarConfigs { //key類名 value表名 public static List<KeyValue> MpList = new List<KeyValue>(){ new KeyValue(){ Key="FormAttr", Value="Flow_FormAttr"}, new KeyValue(){ Key="Student3", Value="Student"}, new KeyValue(){ Key="V_Student", Value="Student"} }; } /// <summary> /// SqlSugar實例工廠 /// </summary> public class SugarFactory { //禁止實例化 private SugarFactory() { } public static SqlSugarClient GetInstance() { string connection = SugarDao.ConnectionString; //這裡可以動態根據cookies或session實現多庫切換 var db = new SqlSugarClient(connection); db.SetMappingTables(SugarConfigs.MpList);//設置關聯表 (引用地址賦值，每次賦值都只是存儲一個內存地址) //批量設置別名表 //db.ClassGenerating.ForeachTables(db, tableName => //{ // db.AddMappingTable(new KeyValue() { Key = tableName.Replace("bbs.",""), Value = tableName }); //key實體名，value表名 //}); return db; } } } } View Code

6、別名列功能

using System; using System.Collections.Generic; using System.Linq; using System.Text; using NewTest.Dao; using System.Data.SqlClient; using MySqlSugar; namespace NewTest.Demos { //別名列的功能 public class MappingColumns : IDemos { public void Init() { Console.WriteLine("啟動MappingColumns.Init"); //全局設置 using (var db = SugarFactory.GetInstance()) { var list = db.Queryable<Student>().Where(it=>it.classId==1).ToList(); } } public class Student { //id public int classId { get; set; } //name public string className { get; set; } //sch_id public int classSchoolId { get; set; } public int isOk { get; set; } } /// <summary> /// 全局配置別名列（不區分表） /// </summary> public class SugarConfigs { //key實體字段名 value表字段名，KEY唯一否則異常 public static List<KeyValue> MpList = new List<KeyValue>(){ new KeyValue(){ Key="classId", Value="id"}, new KeyValue(){ Key="className", Value="name"}, new KeyValue(){ Key="classSchoolId", Value="sch_id"} }; } /// <summary> /// SqlSugar實例工廠 /// </summary> public class SugarFactory { //禁止實例化 private SugarFactory() { } public static SqlSugarClient GetInstance() { string connection = SugarDao.ConnectionString; //這裡可以動態根據cookies或session實現多庫切換 var db = new SqlSugarClient(connection); //注意：只有啟動屬性映射才可以使用SetMappingColumns db.IsEnableAttributeMapping = true; db.SetMappingColumns(SugarConfigs.MpList);//設置關聯列 (引用地址賦值，每次賦值都只是存儲一個內存地址) return db; } } } } View Code

7、通過屬性來設置別名表和別名列

using System; using System.Collections.Generic; using System.Linq; using System.Text; using NewTest.Dao; using Models; using System.Data.SqlClient; using MySqlSugar; namespace NewTest.Demos { //通過屬性的方法設置別名表和別名字段（主鍵和自添列都無需設置 SQLSUGAR會幫你自動處理） //注意:【屬性映射和 (SetMappingTables、SetMappingColumns)方式映射 2種選其中一，不清楚底層緩存機質不建議同時使用】 public class AttributesMapping : IDemos { public void Init() { Console.WriteLine("啟動AttributesMapping.Init"); using (var db = DBManager.GetInstance()) { //查詢 var list = db.Queryable<TestStudent>() .Where(it => it.className.Contains("小")).OrderBy(it => it.classSchoolId).Select<V_Student>(it => new V_Student() { id = it.classId, name = it.className }).ToList(); var list2 = db.Queryable<TestStudent>() .JoinTable<TestSchool>((s1, s2) => s1.classSchoolId == s2.classId) .OrderBy<TestSchool>((s1, s2) => s1.classId) .Select<TestStudent, TestSchool, V_Student>((s1, s2) => new V_Student() { id = s1.classId, name = s1.className, SchoolName = s2.className }).ToList(); //添加 TestStudent s = new TestStudent(); s.className = "屬性名"; s.classSchoolId = 1; var id = db.Insert(s); s.classId = id.ObjToInt(); db.SqlBulkCopy(new List<TestStudent>() { s }); //更新 db.Update(s); db.Update<TestStudent, int>(s, 100); db.Update<TestStudent>(s, it => it.classId == 100); db.SqlBulkReplace(new List<TestStudent>() { s }); //刪除 db.Delete<TestStudent>(it => it.classId == 100); //根據實體賦值實體一定要有主鍵，並且要有值。 db.Delete(new TestStudent() { classId = 200 }); } } /// <summary> /// 屬性只作為初始化映射，SetMappingTables和SetMappingColumns可以覆蓋 /// </summary> [SugarMapping(TableName = "Student")] public class TestStudent { [SugarMapping(ColumnName = "id")] public int classId { get; set; } [SugarMapping(ColumnName = "name")] public string className { get; set; } [SugarMapping(ColumnName = "sch_id")] public int classSchoolId { get; set; } public int isOk { get; set; } /// <summary> /// 數據庫並沒有這一列 /// </summary> public string errorField { get; set; } } [SugarMapping(TableName = "School")] public class TestSchool { [SugarMapping(ColumnName = "id")] public int classId { get; set; } [SugarMapping(ColumnName = "name")] public string className { get; set; } public int AreaId = 1; } } public class DBManager { public static SqlSugarClient GetInstance() { var db = new SqlSugarClient(SugarDao.ConnectionString); db.IsEnableAttributeMapping = true;//啟用屬性映射 db.IsIgnoreErrorColumns = true;//忽略非數據庫列 db.IsEnableLogEvent = true;//啟用日志事件 db.LogEventStarting = (sql, par) => { Console.WriteLine(sql + " " + par + "\r\n"); }; return db; } } } View Code

8、行列過濾 (行過濾器可以設置多個，以逗號隔開)

using System; using System.Collections.Generic; using System.Linq; using System.Text; using NewTest.Dao; using Models; using System.Data.SqlClient; using MySqlSugar; namespace NewTest.Demos { //行過濾加列過濾 //權限管理的最佳設計 public class Filter2 : IDemos { public void Init() { Console.WriteLine("啟動Filter2.Init"); using (SqlSugarClient db = SugarDaoFilter.GetInstance())//開啟數據庫連接 { //設置走哪個過濾器 db.CurrentFilterKey = "role1"; //queryable var list = db.Queryable<Student>().ToJson(); //where id=1 , 可以查看id和name //設置走哪個過濾器 db.CurrentFilterKey = "role2"; //queryable var list2 = db.Queryable<Student>().ToJson(); //where id=2 , 可以查看name } } /// <summary> /// 擴展SqlSugarClient /// </summary> public class SugarDaoFilter { //禁止實例化 private SugarDaoFilter() { } /// <summary> /// 頁面所需要的過濾行 /// </summary> private static Dictionary<string, Func<KeyValueObj>> _filterRos = new Dictionary<string, Func<KeyValueObj>>() { { "role1",()=>{ return new KeyValueObj(){ Key=" id=@id" , Value=new{ id=1}}; } }, { "role2",()=>{ return new KeyValueObj() { Key = " id=@id", Value = new { id = 2 } }; } }, }; /// <summary> /// 頁面所需要的過濾列 /// </summary> private static Dictionary<string, List<string>> _filterColumns = new Dictionary<string, List<string>>() { { "role1",new List<string>(){"id","name"} }, { "role2",new List<string>(){"name"} }, }; public static SqlSugarClient GetInstance() { string connection = SugarDao.ConnectionString; //這裡可以動態根據cookies或session實現多庫切換 var db = new SqlSugarClient(connection); //支持sqlable和queryable db.SetFilterFilterParas(_filterRos); //列過濾只支持queryable db.SetFilterFilterParas(_filterColumns); db.IsEnableLogEvent = true;//啟用日志事件 db.LogEventStarting = (sql, par) => { Console.WriteLine(sql + " " + par + "\r\n"); }; return db; } } } } View Code

9、自動排除非數據庫列

using System; using System.Collections.Generic; using System.Linq; using System.Text; using NewTest.Dao; using Models; using System.Data.SqlClient; using MySqlSugar; namespace NewTest.Demos { //排除錯誤列 public class IgnoreErrorColumns : IDemos { public void Init() { Console.WriteLine("啟動IgnoreErrorColumns.Init"); using (var db = SugarDao.GetInstance()) { db.IsIgnoreErrorColumns = true; //Student表並沒有 AreaName var id= db.Insert<STUDENT>(new STUDENT() { name = "張三", AreaName = "北大" }); db.Update<STUDENT>(new STUDENT() { id=id.ObjToInt() ,name = "張三2", AreaName = "北大" }); } } public class STUDENT { /// <summary> /// Desc:- /// Default:- /// Nullable:False /// </summary> public int id { get; set; } /// <summary> /// Desc:- /// Default:- /// Nullable:True /// </summary> public string name { get; set; } /// <summary> /// Desc:學校ID /// Default:- /// Nullable:True /// </summary> public int? sch_id { get; set; } /// <summary> /// Desc:- /// Default:- /// Nullable:True /// </summary> public string sex { get; set; } /// <summary> /// Desc:- /// Default:- /// Nullable:True /// </summary> public Boolean? isOk { get; set; } public string SchoolName { get; set; } public string AreaName { get; set; } public string SubjectName { get; set; } } } } View Code

10、事務

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NewTest.Dao;
using Models;
using System.Data.SqlClient;
using MySqlSugar;

namespace NewTest.Demos
{
    //事務
    public class Tran : IDemos
    {

        public void Init()
        {
            Console.WriteLine("啟動Tran.Init");
            using (SqlSugarClient db = SugarDao.GetInstance())//開啟數據庫連接
            {
                db.IsNoLock = true;//啟用無鎖查詢
                db.CommandTimeOut = 30000;//設置超時時間
                try
                {
                    db.BeginTran();//開啟事務
                    //db.BeginTran(IsolationLevel.ReadCommitted);+3重載可以設置事世隔離級別

                    db.CommitTran();//提交事務
                }
                catch (Exception)
                {
                    db.RollbackTran();//回滾事務
                    throw;
                }
            }
        }
    }
}

11、流水號功能

using System; using System.Collections.Generic; using System.Linq; using System.Text; using NewTest.Dao; using Models; using System.Data.SqlClient; using MySqlSugar; namespace NewTest.Demos { //流水號的功能 public class SerialNumber : IDemos { public void Init() { Console.WriteLine("啟動SerialNumber.Init"); using (SqlSugarClient db = SugarFactory.GetInstance())//開啟數據庫連接 { var dientityValue = db.Insert<Student>(new Student() { }); var name = db.Queryable<Student>().Single(it => it.id == dientityValue.ObjToInt()).name; Console.WriteLine(name); var dientityValue2 = db.Insert<School>(new School() { }); var name2 = db.Queryable<School>().Single(it => it.id == dientityValue2.ObjToInt()).name; Console.WriteLine(name2); ; } } /// <summary> /// 全局配置類 /// </summary> public class SugarConfigs { public static List<PubModel.SerialNumber> NumList = new List<PubModel.SerialNumber>(){ new PubModel.SerialNumber(){TableName="Student", FieldName="name", GetNumFunc=()=>{ //GetNumFunc在沒有事中使用 return "stud-"+DateTime.Now.ToString("yyyy-MM-dd"); }}, new PubModel.SerialNumber(){TableName="School", FieldName="name", GetNumFuncWithDb=db=>{ //事務中請使用GetNumFuncWithDb保證同一個DB對象,不然會出現死鎖 return "ch-"+DateTime.Now.ToString("syyyy-MM-dd"); }} }; } /// <summary> /// SqlSugar實例工廠 /// </summary> public class SugarFactory { //禁止實例化 private SugarFactory() { } public static SqlSugarClient GetInstance() { string connection = SugarDao.ConnectionString; //這裡可以動態根據cookies或session實現多庫切換 var db = new SqlSugarClient(connection); db.SetSerialNumber(SugarConfigs.NumList);//設置流水號 return db; } } } } View Code