经过四天的努力终于将SqlSugar ORM 成功支持ORACLE数据库 优点: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 ...
经过四天的努力终于将SqlSugar ORM 成功支持ORACLE数据库
优点:
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 get='_blank'>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();
原标题:OracleSugar ORM框架的诞生,代码开源
关键词:oracle
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