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:/ ...
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 性能達到原生水準,遠超 Dapper和EF CORE。
SqlSugar 支持.NET CORE , 多個資料庫
SqlSugar 體積小巧只有150K是EF的30分之1 ,NUGET直接可以下載
連接資料庫
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(); //支持字元串Where 讓你解決,更複雜的查詢 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"); //字元串寫法 //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");//字元串寫法 //order By var orderList = db.Queryable<Student>().OrderBy("id desc,name asc").ToList();//字元串支持多個排序 //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();//不設置欄位預設主鍵 //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) //預設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) //預設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;//還原回預設 //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(別名錶等功能) 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,適合動態許可權 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 }); //根據字元串刪除 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);
更多功能
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、日誌記錄功能
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 { //日誌記錄功能 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()) { //日誌記錄件事件裡面用到資料庫操作 IsEnableLogEvent一定要為false否則將引起死迴圈,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;//啟用日誌事件 db.LogEventStarting = SugarConfigs.LogEventStarting; db.LogEventCompleted = SugarConfigs.LogEventCompleted; return db; } } } }
5、別名錶功能
using System; using System.Collections.Generic;