经过四天的努力终于将SqlSugar ORM 成功支持ORACLE数据库
1、高性能，达到原生最高水准，比SqlHelper性能要高，比Dapper快30% 比EF快50%
2、支持多种数据库 ，sql版本更新最快，其它会定期更新，可以在多种数据库用一种编程方式
3、支持.net Core
4、支持多库并行计算
5、带有实体生成函数和T4模版生成实体
6、无需任何配置 ，还你一个干净的model
2、功能介绍/Product function introduction
查询/Search
1、Queryable用于拉姆达操作数据库
2、SqlQuery用于执行SQL和存储过程
3、Sqlable一种更新近SQL的写法
1、Queryable 用于拉姆达表达式操作（支持Join多表） / Select single table or view
//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 singleOrDefault = db.Queryable<STUDENT>().SingleOrDefault(c => c.ID == 11111111); //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 > 10).OrderBy(it => it.ID).Skip(10).Take(20).ToList(); //上一句的简化写法，同样取10-20条 var page2 = db.Queryable<STUDENT>().Where(c => c.ID > 10).OrderBy(it => it.ID).ToPageList(2, 10); //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 = "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 让你解决，更复杂的查询 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 ").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); //获取最大Id object maxId = db.Queryable<STUDENT>().Max(it => it.ID); int maxId1 = db.Queryable<STUDENT>().Max(it => it.ID).ObjToInt();//拉姆达 int maxId2 = db.Queryable<STUDENT>().Max<STUDENT, int>("id"); //字符串写法 //获取最小 int minId1 = db.Queryable<STUDENT>().Where(c => c.ID > 0).Min(it => it.ID).ObjToInt();//拉姆达 int minId2 = db.Queryable<STUDENT>().Where(c => c.ID > 0).Min<STUDENT, int>("id");//字符串写法 //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(*) 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<SexTotal> list9 = db.Queryable<STUDENT>().Where(c => c.ID < 20).GroupBy(it => it.SEX).Select<STUDENT, SexTotal>("SEX,count(*) COUNT").ToList(); List<SexTotal> list10 = db.Queryable<STUDENT>().Where(c => c.ID < 20).GroupBy("sex").Select<STUDENT, SexTotal>("SEX,count(*) COUNT").ToList(); //SELECT Sex,Count=count(*) FROM Student WHERE 1=1 AND (id < 20) GROUP BY Sex --生成结果 //2表关联查询 var jList = db.Queryable<STUDENT>() .JoinTable<STUDENT, SCHOOL>((s1, s2) => s1.SCH_ID == s2.ID) //默认left join .Where<STUDENT, SCHOOL>((s1, s2) => s1.ID == 1) .Select("s1.*,s2.name as schName") .ToDynamic(); /*等于同于 SELECT s1.*,s2.name as schName FROM [Student] s1 LEFT JOIN [School] s2 ON s1.sch_id = s2.id WHERE s1.id = 1 */ //2表关联查询并分页 var jList2 = db.Queryable<STUDENT>() .JoinTable<STUDENT, SCHOOL>((s1, s2) => s1.SCH_ID == s2.ID) //默认left join //如果要用inner join这么写 //.JoinTable<Student, School>((s1, s2) => s1.sch_id == s2.id ,JoinType.INNER) .Where<STUDENT, SCHOOL>((s1, s2) => s1.ID > 1) .OrderBy<STUDENT, SCHOOL>((s1, s2) => s1.NAME) .Skip(10) .Take(20) .Select("s1.*,s2.name as schName") .ToDynamic(); //3表查询并分页 var jList3 = db.Queryable<STUDENT>() .JoinTable<STUDENT, SCHOOL>((s1, s2) => s1.SCH_ID == s2.ID) // left join School s2 on s1.id=s2.id .JoinTable<STUDENT, SCHOOL>((s1, s3) => s1.SCH_ID == s3.ID) // left join School s3 on s1.id=s3.id .Where<STUDENT, SCHOOL>((s1, s2) => s1.ID > 1) // where s1.id>1 .Where<STUDENT>(s1 => s1.ID > 0) .OrderBy<STUDENT, SCHOOL>((s1, s2) => s1.ID) //order by s1.id 多个order可以 .oderBy().orderby 叠加 .Skip(10) .Take(20) .Select("s1.*,s2.name as schName,s3.name as schName2")//select目前只支持这种写法 .ToDynamic(); //上面的方式都是与第一张表join，第三张表想与第二张表join写法如下 List<classNew> jList4 = db.Queryable<STUDENT>() .JoinTable<STUDENT, SCHOOL>((s1, s2) => s1.SCH_ID == s2.ID) // left join School s2 on s1.id=s2.id .JoinTable<STUDENT, SCHOOL, AREA>((s1, s2, a1) => a1.ID == s2.AREAID)// left join Area a1 on a1.id=s2.AreaId .Select<STUDENT, SCHOOL, AREA, classNew>((s1, s2, a1) => new classNew { NEWID = s1.ID, STUDENTNAME = s1.NAME, SCHOOLNAME = s2.NAME, AREANAME = a1.NAME }).ToList(); //最多支持5表查询,太过复杂的建议用Sqlable或者SqlQuery,我们的Queryable只适合轻量级的查询 //拼接 var queryable = db.Queryable<STUDENT>().Where(it => true); if (maxId.ObjToInt() == 1) { queryable.Where(it => it.ID == 1); } else { queryable.Where(it => it.ID == 2); } var listJoin = queryable.ToList(); //queryable和SqlSugarClient解耦 var par = new Queryable<STUDENT>().Where(it => it.ID == 1);//声名没有connection对象的Queryable par.DB = db; var listPar = par.ToList(); //查看生成的sql和参数 var id=1; var sqlAndPars = db.Queryable<STUDENT>().Where(it => it.ID == id).OrderBy(it => it.ID).ToSql(); //函数的支持(字段暂不支持函数,只有参数支持) 目前只支持这么多 var par1 = "2015-1-1"; var par2 = " 我 有空格, "; var r1 = db.Queryable<STUDENT>().Where(it => it.NAME == par1.ObjToString()).ToSql(); //ObjToString会将null转转成"" var r2 = db.Queryable<INSERTTEST>().Where(it => it.D1 == par1.ObjToDate()).ToSql(); var r3 = db.Queryable<INSERTTEST>().Where(it => it.ID == 1.ObjToInt()).ToSql();//ObjToInt会将null转转成0 var r4 = db.Queryable<INSERTTEST>().Where(it => it.ID == 2.ObjToDecimal()).ToSql(); var r5 = db.Queryable<INSERTTEST>().Where(it => it.ID == 3.ObjToMoney()).ToSql(); var r6 = db.Queryable<INSERTTEST>().Where(it => it.V1 == par2.Trim()).ToSql(); 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(); 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();
2、SqlQuery 用于执行原生SQL和存储过程 / Execution of native SQL
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 where rownum=1").SingleOrDefault(); //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 id,name from Student where rownum=1").SingleOrDefault(); //存储过程 //var spResult = db.SqlQuery<SCHOOL>(@"begin exec sp_school (:p1,:p2); end;", new { p1 = 1, p2 = 2 }); //获取第一行第一列的值 string v1 = db.GetString("select '张三' as name from dual"); int v2 = db.GetInt("select 1 as name from dual"); double v3 = db.GetDouble("select 1 as name from dual"); decimal v4 = db.GetDecimal("select 1 as name from dual"); //.... }
3、Sqlable 更贴近SQL的一种编程方式，适用于复杂查询 / Complex query
//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("s.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 as id from dual )" /*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"); } if (id > 0) { sable = sable.Where("l.id in (select id from school where rownum<10)");//where加子查询 } var pars = new { id = id, name = name }; int pageCount = sable.Count(pars); var list7 = sable.SelectToPageList<STUDENT>("s.*", "l.id desc", 1, 20, pars);