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(); //Like conval = "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false bool 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 //In var 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list List<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dynamic dynamic list3 = db.SqlQueryDynamic("select * from student"); //转成json string list4 = db.SqlQueryJson("select * from student"); //返回int var 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 }
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。 }
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); }
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
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(); }
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"); }
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"; //queryable var 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}) //sqlable var list2 = db.Sqlable().From<Student>("s").SelectToList<Student>("*"); //同上 //sqlQuery var 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; } } }
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NULL List<KeyValue> mappingTableList = new List<KeyValue>(){ new KeyValue(){ Key="FormAttr", Value="Flow_FormAttr"}, new KeyValue(){ Key="Student3", Value="Student"} }; db.SetMappingTables(mappingTableList); }
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"); }