SqlSugar 4.X API

In addition to EF, the most powerful ORM

Support：MySql、SqlServer、Sqlite、Oracle

Contactinfomation

Email:610262374@qq.com QQ Group:225982985

Nuget

.net Install：

Install-Package sqlSugar 

.net core Install：

Install-Package sqlSugarCore

Here's the history version

https://github.com/sunkaixuan/SqlSugar/tree/master

Let's look at a DEMO first

//Create DbContext 
public class DbContext
{
    public DbContext()
    {
        db = new SqlSugarClient(new ConnectionConfig()
        {
            ConnectionString = Config.ConnectionString,
            DbType = DbType.Oracle,
            IsAutoCloseConnection = true
        });
    }
    public SqlSugarClient Db;
    public SimpleClient<Student> StudentDb { get { return new SimpleClient<Student>(Db); } }
    public SimpleClient<School> SchoolDb { get { return new SimpleClient<School>(Db); } }
}
public class Business : DbContext
{
    //use DbContext
    public void GetAll()
    {

        //use Db get student list
        List<Student> list= Db.Queryable<Student>().ToList();

        //use  StudentDb get student list
        List<Student> list2=StudentDb.GetList();
        //StudentDb.GetById
        //StudentDb.Delete
        //StudentDb.Update
        //StudentDb.Insert
        //StudentDb.GetPageList
        //....
        //SchoolDb.GetById
        //....

    }
}

SimpleClient encapsulates common operations

Transaction or multi table operation use SqlSugarClient

Detailed usage introduction

1. Query

1.1 Create Connection

If you have system table permissions, use SystemTableConfig,else use AttributeConfig

SqlSugarClient db = new SqlSugarClient(new ConnectionConfig() { ConnectionString = Config.ConnectionString, DbType = DbType.SqlServer });

1.2 Introduction

var getAll = db.Queryable<Student>().ToList();
var getAllNoLock = db.Queryable<Student>().With(SqlWith.NoLock).ToList();
var getByPrimaryKey = db.Queryable<Student>().InSingle(2);
var getByWhere = db.Queryable<Student>().Where(it => it.Id == 1 || it.Name == "a").ToList();
var getByFuns = db.Queryable<Student>().Where(it => SqlFunc.IsNullOrEmpty(it.Name)).ToList();
var sum = db.Queryable<Student>().Sum(it=>it.Id);
var isAny = db.Queryable<Student>().Where(it=>it.Id==-1).Any();
var isAny2 = db.Queryable<Student>().Any(it => it.Id == -1);
var getListByRename = db.Queryable<School>().AS("Student").ToList();
var group = db.Queryable<Student>().GroupBy(it => it.Id)
.Having(it => SqlFunc.AggregateCount(it.Id) > 10)
.Select(it =>new { id = SqlFunc.AggregateCount(it.Id) }).ToList();

1.3 Page

var pageIndex = 1;
var pageSize = 2;
var totalCount = 0;
//page
var page = db.Queryable<Student>().ToPageList(pageIndex, pageSize, ref totalCount);

//page join
var pageJoin = db.Queryable<Student, School>((st, sc) => new object[] {
JoinType.Left,st.SchoolId==sc.Id
}).ToPageList(pageIndex, pageSize, ref totalCount);

//top 5
var top5 = db.Queryable<Student>().Take(5).ToList();

//skip5
var skip5 = db.Queryable<Student>().Skip(5).ToList();

1.4 Join

easy join

//2 join
var list5 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id).Select((st,sc)=>new {st.Name,st.Id,schoolName=sc.Name}).ToList();

//3 join 
var list6 = db.Queryable<Student, School,School>((st, sc,sc2) => st.SchoolId == sc.Id&&sc.Id==sc2.Id)
    .Select((st, sc,sc2) => new { st.Name, st.Id, schoolName = sc.Name,schoolName2=sc2.Name }).ToList();

//3 join page
var list7= db.Queryable<Student, School, School>((st, sc, sc2) => st.SchoolId == sc.Id && sc.Id == sc2.Id)
.Select((st, sc, sc2) => new { st.Name, st.Id, schoolName = sc.Name, schoolName2 = sc2.Name }).ToPageList(1,2);

left join

//join  2
var list = db.Queryable<Student, School>((st, sc) => new object[] {
JoinType.Left,st.SchoolId==sc.Id
})
.Where(st=>st.Name=="jack").ToList();

//join  3
var list2 = db.Queryable<Student, School,Student>((st, sc,st2) => new object[] {
JoinType.Left,st.SchoolId==sc.Id,
JoinType.Left,st.SchoolId==st2.Id
})
.Where((st, sc, st2)=> st2.Id==1||sc.Id==1||st.Id==1).ToList();

//join return List<ViewModelStudent>
var list3 = db.Queryable<Student, School>((st, sc) => new object[] {
JoinType.Left,st.SchoolId==sc.Id
}).Select((st,sc)=>new ViewModelStudent { Name= st.Name,SchoolId=sc.Id }).ToList();

//join Order By (order by st.id desc,sc.id desc)
var list4 = db.Queryable<Student, School>((st, sc) => new object[] {
JoinType.Left,st.SchoolId==sc.Id
})
.OrderBy(st=>st.Id,OrderByType.Desc)
.OrderBy((st,sc)=>sc.Id,OrderByType.Desc)
.Select((st, sc) => new ViewModelStudent { Name = st.Name, SchoolId = sc.Id }).ToList();

subquery

var getAll = db.Queryable<Student, School>((st, sc) => new object[] {
 JoinType.Left,st.Id==sc.Id})
.Where(st => st.Id == SqlFunc.Subqueryable<School>().Where(s => s.Id == st.Id).Select(s => s.Id))
.ToList();
      
//sql
SELECT `st`.`ID`,`st`.`SchoolId`,`st`.`Name`,`st`.`CreateTime` 
     FROM `STudent` st Left JOIN `School` sc ON ( `st`.`ID` = `sc`.`Id` )  
      WHERE ( `st`.`ID` =(SELECT `Id` FROM `School` WHERE ( `Id` = `st`.`ID` ) limit 0,1))

1.5 SqlFunctions

var t1 = db.Queryable<Student>().Where(it => SqlFunc.ToLower(it.Name) == SqlFunc.ToLower("JACK")).ToList();
//SELECT [Id],[SchoolId],[Name],[CreateTime] FROM [Student]  WHERE ((LOWER([Name])) = (LOWER(@MethodConst0)) )

/***More Functions***/
//SqlFunc.IsNullOrEmpty(object thisValue)
//SqlFunc.ToLower(object thisValue) 
//SqlFunc.string ToUpper(object thisValue) 
//SqlFunc.string Trim(object thisValue) 
//SqlFunc.bool Contains(string thisValue, string parameterValue) 
//SqlFunc.ContainsArray(object[] thisValue, string parameterValue) 
//SqlFunc.StartsWith(object thisValue, string parameterValue) 
//SqlFunc.EndsWith(object thisValue, string parameterValue)
//SqlFunc.Equals(object thisValue, object parameterValue) 
//SqlFunc.DateIsSame(DateTime date1, DateTime date2)
//SqlFunc.DateIsSame(DateTime date1, DateTime date2, DateType dataType) 
//SqlFunc.DateAdd(DateTime date, int addValue, DateType millisecond) 
//SqlFunc.DateAdd(DateTime date, int addValue) 
//SqlFunc.DateValue(DateTime date, DateType dataType) 
//SqlFunc.Between(object value, object start, object end) 
//SqlFunc.ToInt32(object value) 
//SqlFunc.ToInt64(object value)
//SqlFunc.ToDate(object value) 
//SqlFunc.ToString(object value) 
//SqlFunc.ToDecimal(object value) 
//SqlFunc.ToGuid(object value) 
//SqlFunc.ToDouble(object value) 
//SqlFunc.ToBool(object value) 
//SqlFunc.Substring(object value, int index, int length)
//SqlFunc.Replace(object value, string oldChar, string newChar)
//SqlFunc.Length(object value) { throw new NotImplementedException(); }
//SqlFunc.AggregateSum(object thisValue) 
//SqlFunc.AggregateAvg<TResult>(TResult thisValue)
//SqlFunc.AggregateMin(object thisValue) 
//SqlFunc.AggregateMax(object thisValue) 
//SqlFunc.AggregateCount(object thisValue) 

1.6 Select

var s1 = db.Queryable<Student>().Select(it => new ViewModelStudent2 { Name = it.Name, Student = it }).ToList();
var s2 = db.Queryable<Student>().Select(it => new { id = it.Id, w = new { x = it } }).ToList();
var s3 = db.Queryable<Student>().Select(it => new { newid = it.Id }).ToList();
var s4 = db.Queryable<Student>().Select(it => new { newid = it.Id, obj = it }).ToList();
var s5 = db.Queryable<Student>().Select(it => new ViewModelStudent2 { Student = it, Name = it.Name }).ToList();

1.7 Join Sql

var join3 = db.Queryable("Student", "st")
                .AddJoinInfo("School", "sh", "sh.id=st.schoolid")
                .Where("st.id>@id")
                .AddParameters(new { id = 1 })
                .Select("st.*").ToList();
 //SELECT st.* FROM [Student] st Left JOIN School sh ON sh.id=st.schoolid   WHERE st.id>@id 

1.8 ADO.NET

var db = GetInstance();
var t1= db.Ado.SqlQuery<string>("select 'a'");
var t2 = db.Ado.GetInt("select 1");
var t3 = db.Ado.GetDataTable("select 1 as id");
//more
//db.Ado.GetXXX...

1.9 Where

var list = db.Queryable<Student, School>((st, sc) => new object[] {
JoinType.Left,st.SchoolId==sc.Id
})
.Where((st,sc)=> sc.Id == 1)
.Where((st,sc) => st.Id == 1)
.Where((st, sc) => st.Id == 1 && sc.Id == 2).ToList();

//SELECT [st].[Id],[st].[SchoolId],[st].[Name],[st].[CreateTime] FROM [Student] st 
//Left JOIN School sc ON ( [st].[SchoolId] = [sc].[Id] )   
//WHERE ( [sc].[Id] = @Id0 )  AND ( [st].[Id] = @Id1 )  AND (( [st].[Id] = @Id2 ) AND ( [sc].[Id] = @Id3 ))

//Where If
string name = null;
string name2 = "sunkaixuan";
var list2 = db.Queryable<Student>()
.WhereIF(!string.IsNullOrEmpty(name), it => it.Name == name)
.WhereIF(!string.IsNullOrEmpty(name2), it => it.Name == name2).ToList();

2. Insert

var insertObj = new Student() { Name = "jack", CreateTime = Convert.ToDateTime("2010-1-1") ,SchoolId=1};

//Insert reutrn Insert Count
var t2 = db.Insertable(insertObj).ExecuteCommand();

//Insert reutrn Identity Value
var t3 = db.Insertable(insertObj).ExecuteReutrnIdentity();


//Only  insert  Name 
var t4 = db.Insertable(insertObj).InsertColumns(it => new { it.Name,it.SchoolId }).ExecuteReutrnIdentity();


//Ignore TestId
var t5 = db.Insertable(insertObj).IgnoreColumns(it => new { it.Name, it.TestId }).ExecuteReutrnIdentity();


//Ignore   TestId
var t6 = db.Insertable(insertObj).IgnoreColumns(it => it == "Name" || it == "TestId").ExecuteReutrnIdentity();


//Use Lock
var t8 = db.Insertable(insertObj).With(SqlWith.UpdLock).ExecuteCommand();


var insertObj2 = new Student() { Name = null, CreateTime = Convert.ToDateTime("2010-1-1") };
var t9 = db.Insertable(insertObj2).Where(true/* Is insert null */, true/*off identity*/).ExecuteCommand();

//Insert List<T>
var insertObjs = new List<Student>();
for (int i = 0; i < 1000; i++)
{
insertObjs.Add(new Student() { Name = "name" + i });
}
var s9 = db.Insertable(insertObjs.ToArray()).InsertColumns(it => new { it.Name }).ExecuteCommand();

3. Delete

var t1 = db.Deleteable<Student>().Where(new Student() { Id = 1 }).ExecuteCommand();

//use lock
var t2 = db.Deleteable<Student>().With(SqlWith.RowLock).ExecuteCommand();


//by primary key
var t3 = db.Deleteable<Student>().In(1).ExecuteCommand();

//by primary key array
var t4 = db.Deleteable<Student>().In(new int[] { 1, 2 }).ExecuteCommand();

//by expression
var t5 = db.Deleteable<Student>().Where(it => it.Id == 1).ExecuteCommand();

4. Update

//update reutrn Update Count
var t1= db.Updateable(updateObj).ExecuteCommand();

//Only  update  Name 
var t3 = db.Updateable(updateObj).UpdateColumns(it => new { it.Name }).ExecuteCommand();


//Ignore  Name and TestId
var t4 = db.Updateable(updateObj).IgnoreColumns(it => new { it.Name, it.TestId }).ExecuteCommand();

//Ignore  Name and TestId
var t5 = db.Updateable(updateObj).IgnoreColumns(it => it == "Name" || it == "TestId").With(SqlWith.UpdLock).ExecuteCommand();


//Use Lock
var t6 = db.Updateable(updateObj).With(SqlWith.UpdLock).ExecuteCommand();

//update List<T>
var t7 = db.Updateable(updateObjs).ExecuteCommand();

//Re Set Value
var t8 = db.Updateable(updateObj)
.ReSetValue(it => it.Name == (it.Name + 1)).ExecuteCommand();

//Where By Expression
var t9 = db.Updateable(updateObj).Where(it => it.Id == 1).ExecuteCommand();

//Update By Expression  Where By Expression
var t10 = db.Updateable<Student>()
.UpdateColumns(it => new Student() { Name="a",CreateTime=DateTime.Now })
.Where(it => it.Id == 11).ExecuteCommand();

5. Table structure is different from entity

Priority level：

AS>Add>Attribute

5.1 Add

db.MappingTables.Add()
db.MappingColumns.Add()
db.IgnoreColumns.Add()

5.2 AS

db.Queryable<T>().As("tableName").ToList();

5.3 Attribute

[SugarColumn(IsIgnore=true)]
public int TestId { get; set; }

6. Use Tran

var result = db.Ado.UseTran(() =>
{
        
  var beginCount = db.Queryable<Student>().ToList();
  db.Ado.ExecuteCommand("delete student");
  var endCount = db.Queryable<Student>().Count();
  throw new Exception("error haha");
})

7. Use Store Procedure

 
var dt2 = db.Ado.UseStoredProcedure().GetDataTable("sp_school",new{p1=1,p2=null});
 
//output
var p11 = new SugarParameter("@p1", "1");
var p22 = new SugarParameter("@p2", null, true);//isOutput=true
var dt2 = db.Ado.UseStoredProcedure().GetDataTable("sp_school",p11,p22);

8. DbFirst

var db = GetInstance();
    //Create all class
    db.DbFirst.CreateClassFile("c:\\Demo\\1");

    //Create student calsss
    db.DbFirst.Where("Student").CreateClassFile("c:\\Demo\\2");
    //Where(array)

    //Mapping name
    db.MappingTables.Add("ClassStudent", "Student");
    db.MappingColumns.Add("NewId", "Id", "ClassStudent");
    db.DbFirst.Where("Student").CreateClassFile("c:\\Demo\\3");

    //Remove mapping
    db.MappingTables.Clear();

    //Create class with default value
    db.DbFirst.IsCreateDefaultValue().CreateClassFile("c:\\Demo\\4", "Demo.Models");


    //Mapping and Attribute
    db.MappingTables.Add("ClassStudent", "Student");
    db.MappingColumns.Add("NewId", "Id", "ClassStudent");
    db.DbFirst.IsCreateAttribute().Where("Student").CreateClassFile("c:\\Demo\\5");


    //Remove mapping
    db.MappingTables.Clear();
    db.MappingColumns.Clear();

    //Custom format,Change old to new
    db.DbFirst.
        SettingClassTemplate(old =>
        {
            return old;
        })
       .SettingNamespaceTemplate(old =>
       {
           return old;
       })
       .SettingPropertyDescriptionTemplate(old =>
       {
           return @"           /// <summary>
   /// Desc_New:{PropertyDescription}
   /// Default_New:{DefaultValue}
   /// Nullable_New:{IsNullable}
   /// </summary>";
       })
        .SettingPropertyTemplate(old =>
        {
            return old;
        })
        .SettingConstructorTemplate(old =>
        {
            return old;
        })
    .CreateClassFile("c:\\Demo\\6");
}

8.Code First

db.CodeFirst.BackupTable().InitTables(typeof(CodeTable),typeof(CodeTable2)); //change entity backupTable
db.CodeFirst.InitTables(typeof(CodeTable),typeof(CodeTable2));

9. AOP LOG

db.Aop.OnLogExecuted = (sql, pars) => //SQL执行完事件
{
 
};
db.Aop.OnLogExecuting = (sql, pars) => //SQL执行前事件
{
 
};
db.Aop.OnError = (exp) =>//执行SQL 错误事件
{
                 
};
db.Aop.OnExecutingChangeSql = (sql, pars) => //SQL执行前 可以修改SQL
{
    return new KeyValuePair<string, SugarParameter[]>(sql,pars);
};

More http://www.codeisbug.com/Doc/8