mysql 3.X API地址： http://www.cnblogs.com/sunkaixuan/p/5987308.html

MySqlSugar 1.5 API

一、介简

SqlSugar ORM框架一直在升级当中，昨天将EMIT架构进行了重构，让类型转换更加智能，EMIT转换后的性能和原生ADO同水准(以前只是接近)，为了提高性能、稳定、有问必答、有需求必改、坚持更新。例如数据库类型为BIT我们在程序里面可以使用 INT接收也可以用BOOL接收，不影响一丝性能，这些都是SQLSUGAR以前没有的功能。

经过一天的努力，MySql版本所有的例子都已经测试通过：

MySql .NET 4.0+

https://github.com/sunkaixuan/MySqlSugar

MySql .NET CORE

下周更新

MSQL .NET 4.0+下载地址：

https://github.com/sunkaixuan/SqlSugar

MSSQL .NET Core版本

https://github.com/sunkaixuan/ASP_NET_CORE_ORM_SqlSugar

优点：

1、优越的性能，查询使用 reflection.emit 创建IL语言+委托绑定然后对该对象进行 cache ,datareader直接赋值给cache对象,高性能拉姆达解析，查询速度达到原生最高性能的写法水准

2、大量语法糖，拉姆达表达示筛选，新颖的多表查询，方便的分页等

3、支持事务

4、内置实体类生成函数，无需使用第三方代码生成器

5、简单好用、例子齐全有问必答。

组成：

sqlSugar是由sqlSugarClient提供统一调用模式，sqlSugarClient是由5个部分组成

1、自身函数

2、实体生成

3、单表查询

4、多表查询

5、基类函数

MySql教程

和MSSQL版本基本一样但是个别例子也会有些细节上的区别

一、查询

1、拉姆达查询（以后会支持多表JOIN）

语法简洁和EF相似，但有区别的SqlSugar更适合字符串操作，例如Where("Id>@id",new{id=1})

   //针对单表或者视图查询var dt=  db.GetDataTable("select * from Student");//查询所有var student = db.Queryable<Student>().ToList();var studentDynamic = db.Queryable<Student>().ToDynamic();var studentJson = db.Queryable<Student>().ToJson();//查询单条var single = db.Queryable<Student>().Single(c => c.id == 1);//查询单条没有记录返回空对象var single2 = db.Queryable<Student>().Where(c => c.id == 1).SingleOrDefault();//查询第一条var first = db.Queryable<Student>().Where(c => c.id == 1).First();var first2 = db.Queryable<Student>().Where(c => c.id == 1).FirstOrDefault();//取10-20条var page1 = db.Queryable<Student>().Where(c => c.id > 2).OrderBy(it=>it.id).Skip(2).Take(3).ToList();//上一句的简化写法，同样取10-20条var page2 = db.Queryable<Student>().Where(c => c.id > 1).OrderBy(it => it.id).ToPageList(2, 3);//查询条数var count = db.Queryable<Student>().Where(c => c.id > 10).Count();//从第2条开始以后取所有var skip = db.Queryable<Student>().Where(c => c.id > 10).OrderBy(it => it.id).Skip(2).ToList();//取前2条var take = db.Queryable<Student>().Where(c => c.id > 10).OrderBy(it => it.id).Take(2).ToList();// Not like string conval = "三";var notLike = db.Queryable<Student>().Where(c => !c.name.Contains(conval.ToString())).ToList();//Likeconval = "三";var like = db.Queryable<Student>().Where(c => c.name.Contains(conval)).ToList();// 可以在拉姆达使用 ToString和 Convert,比EF出色的地方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 => DateTime.Now > Convert.ToDateTime("2015-1-1")).ToList();var convert4 = db.Queryable<Student>().Where(c => DateTime.Now > DateTime.Now).ToList();//支持字符串Where 让你解决，更复杂的查询var student12 = db.Queryable<Student>().Where(c => "a" == "a").Where("id>100").ToList();var student13 = db.Queryable<Student>().Where(c => "a" == "a").Where("id>100 and id in( select 1)").ToList();//存在记录反回true，则否返回falsebool isAny100 = db.Queryable<Student>().Any(c => c.id == 100);bool isAny1 = db.Queryable<Student>().Any(c => c.id == 1);int maxId = db.Queryable<Student>().Max<Student, int>("id");int minId = db.Queryable<Student>().Where(c => c.id > 0).Min<Student, int>("id");//order By var orderList = db.Queryable<Student>().OrderBy("id desc,name asc").ToList();//字符串支持多个排序//可以多个order by表达示var order2List = db.Queryable<Student>().OrderBy(it => it.name).OrderBy(it => it.id, OrderByType.desc).ToList(); // order by name as ,order by id desc//Invar intArray = new[] { "5", "2", "3" };var intList = intArray.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();//分组查询var list7 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy(it => it.sex).Select("sex,count(*) as Count").ToDynamic();var list8 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy(it => it.sex).GroupBy(it => it.id).Select("id,sex, count(*) as Count").ToDynamic();List<SexTotal> list9 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy(it => it.sex).Select<Student, SexTotal>("Sex, count(*) as Count").ToList();List<SexTotal> list10 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy("sex").Select<Student, SexTotal>("Sex, count(*) as Count").ToList();//SELECT Sex,Count=count(*)  FROM Student  WHERE 1=1  AND  (id < 20)    GROUP BY Sex --生成结果

2、sqlable 接近SQL的一个路线。

放弃了传统的EF写法，让他更接近SQL，可以取代传统的SQL拼接，让格式更好控。

 using (var db = SugarDao.GetInstance()){//---------Sqlable,创建多表查询---------////多表查询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")//可以多个WHERE.OrderBy("id").SelectToList<School/*新的Model我这里没有所以写的School*/>("st.*", new { id = 1 });//多表分页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);//多表分页WHERE加子查询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 )" /*这里面写子查询都可以*/).SelectToPageList<School>("st.*", "s.id", 1, 10);//--------转成List Dynmaic 或者 Json-----////不分页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 });//分页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");}var pars = new { id = id, name = name };int pageCount = sable.Count(pars);var list7 = sable.SelectToPageList<Student>("s.*","l.id desc",1,20, pars);}

3、对原生SQL查询

 using (var db = SugarDao.GetInstance()){//转成listList<Student> list1 = db.SqlQuery<Student>("select * from Student");//转成list带参List<Student> list2 = db.SqlQuery<Student>("select * from Student where id=@id", new { id = 1 });//转成dynamicdynamic list3 = db.SqlQueryDynamic("select * from student");//转成jsonstring list4 = db.SqlQueryJson("select * from student");//返回intvar list5 = db.SqlQuery<int>("select  id from Student limit 0,1").First();//反回键值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  name from Student").First();//存储过程//var spResult = db.SqlQuery<School>("exec sp_school @p1,@p2", new { p1=1,p2=2 });}

4、容器的转换

   using (SqlSugarClient db = SugarDao.GetInstance()){var list2= db.Queryable<Student>().Where(c => c.id < 10).Select(c => new classNew { newid = c.id, newname = c.name, xx_name = c.name }).ToList();//不支持匿名类转换,也不建议使用var list3 = db.Queryable<Student>().Where(c => c.id < 10).Select(c => new   { newid = c.id, newname = c.name, xx_name = c.name }).ToDynamic();//匿名类转换}

View Code

二、更新

可以指定列更新，也可对实体整个更新，也可以排除不更新字段非常的方便好用

 int id = 1;using (var db = SugarDao.GetInstance()){//指定列更新db.Update<School>(new { name = "蓝翔2" }, it => it.id == id);db.Update<School, int>(new { name = "蓝翔2" }, 1, 3, 12);db.Update<School, string>(new { name = "蓝翔2" }, new string[] { "1", "2" });//整个实体更新db.Update(new School { id = id, name = "蓝翔2" });db.Update<School>(new School { id = id, name = "蓝翔2" }, it => it.id == id);//设置不更新列db.DisableUpdateColumns = new string[] { "CreateTime" };//设置CreateTime不更新
TestUpdateColumns updObj = new TestUpdateColumns(){VGUID = Guid.Parse("6DF396EB-D1C8-48A5-8BE1-D58D685646A7"),Name = "xx",Name2 = "xx2",IdentityField = 0,CreateTime = null};//CreateTime将不会被更新
                db.Update(updObj);//以前实现这种更新需要用指定列的方式实现，现在就简单多了。
               }

更新

三、删除

 using (var db = SugarDao.GetInstance()){//真删除db.Delete<Student, int>(10);//注意主键必需为实体类的第一个属性db.Delete<School>(it => it.id > 100);db.Delete<School, string>(new string[] { "100", "101", "102" });//假删除//db.FalseDelete<school>("is_del", 100);//等同于 update school set is_del=0 where id in(100)//db.FalseDelete<school>("is_del", it=>it.id==100);}

删除

四、插入

Student s = new Student(){name = "张" + new Random().Next(1, int.MaxValue)};db.Insert(s); //插入一条记录 (有主键也好，没主键也好，有自增列也好都可以插进去)
List<Student> list = new List<Student>(){new Student(){name="张"+new Random().Next(1,int.MaxValue)},new Student(){name="张"+new Random().Next(1,int.MaxValue)}};db.InsertRange(list); //批量插入

插入

五、枚举支持

 using (SqlSugarClient db = SugarDao.GetInstance()){var stuList= db.Queryable<Student>().ToList();db.Insert<Student>(new Student() { sch_id = SchoolEnum.蓝翔2 });db.Update<Student>(new Student() {  sch_id=SchoolEnum.蓝翔2 , id=1} );var stuList2 = db.Queryable<Student>().Where(it=>it.sch_id==SchoolEnum.蓝翔1).ToList();}

枚举

六、实体生成

 using (var db = SugarDao.GetInstance()){//根据当前数据库生成所有表的实体类文件 （参数：SqlSugarClient ，文件目录，命名空间）db.ClassGenerating.CreateClassFiles(db,"e:\\mysqlModel","Models");//根据表名生成实体类文件//db.ClassGenerating.CreateClassFilesByTableNames(db, Server.MapPath("~/Models"), "Models" , "student","school");//根据表名生成class字符串var str = db.ClassGenerating.TableNameToClass(db, "Student");//根据SQL语句生成class字符串var str2 = db.ClassGenerating.SqlToClass(db, "select   * from Student", "student");}

实体生成

除了上面代码还有T4生成看DEMO不懂可以随时问我

七、全局过滤器

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using MySqlSugar;
using Models;namespace WebTest.Demo
{/// <summary>/// 过滤器/// </summary>public partial class Filter : System.Web.UI.Page{protected void Page_Load(object sender, EventArgs e){using (SqlSugarClient db = SugarDaoFilter.GetInstance())//开启数据库连接
            {//设置走哪个过滤器db.CurrentFilterKey = "role";//queryablevar list = db.Queryable<Student>().ToList(); //通过全局过滤器对需要权限验证的数据进行过滤//相当于db.Queryable<Student>().Where("id=@id",new{id=1})//sqlablevar list2 = db.Sqlable().From<Student>("s").SelectToList<Student>("*");//同上//sqlQueryvar list3 = db.SqlQuery<Student>("select * from Student where 1=1");//同上
            }}}/// <summary>/// 扩展SqlSugarClient/// </summary>public class SugarDaoFilter{//禁止实例化private SugarDaoFilter(){}/// <summary>/// 页面所需要的过滤函数/// </summary>private static Dictionary<string, Func<KeyValueObj>> _filterParas = new Dictionary<string, Func<KeyValueObj>>(){{ "role",()=>{return new KeyValueObj(){ Key=" id=@id" , Value=new{ id=1}};}},{ "org",()=>{ return new KeyValueObj(){ Key=" orgId=@orgId" , Value=new{ orgId=1}};}},};public static SqlSugarClient GetInstance(){string connection = System.Configuration.ConfigurationManager.ConnectionStrings[@"sqlConn"].ToString(); //这里可以动态根据cookies或session实现多库切换var reval = new SqlSugarClient(connection);reval.SetFilterFilterParas(_filterParas);return reval;}}
}

过滤器

八、别名表

 using (SqlSugarClient db = SugarDao.GetInstance()){//-----单个-------//
                var list = db.Queryable<V_Student>("Student").ToList();//查询的是 select * from student 而我的实体名称为V_Student//-----全局多个设置-------////设置 Mapping Table 如果没这方面需求可以传NULLList<KeyValue> mappingTableList = new List<KeyValue>(){new KeyValue(){ Key="FormAttr", Value="Flow_FormAttr"},new KeyValue(){ Key="Student3", Value="Student"}};db.SetMappingTables(mappingTableList);}

别名表

九、事务

using (SqlSugarClient db = SugarDao.GetInstance())//开启数据库连接
            {db.IsNoLock = true;//启用无锁查询db.CommandTimeOut = 30000;//设置超时时间try{db.BeginTran();//开启事务//db.BeginTran(IsolationLevel.ReadCommitted);+3重载可以设置事世隔离级别
db.CommitTran();//提交事务
                }catch (Exception){db.RollbackTran();//回滚事务throw;}}

十、保留了ADO功能

 using (SqlSugarClient db = SugarDao.GetInstance())//开启数据库连接
            {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");}