In addition to EF, the most powerful ORM
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Install-Package sqlSugar (MySql、SqlServer、Sqlite、Oracle)
Install-Package sqlSugarCore (MySql、SqlServer、sqlite、Oracle)
https://github.com/sunkaixuan/SqlSugar/tree/master
If you have system table permissions, use SystemTableConfig,else use AttributeConfig
SqlSugarClient db = new SqlSugarClient(new ConnectionConfig() { ConnectionString = Config.ConnectionString, DbType = DbType.SqlServer });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();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();//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);//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();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))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) 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();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 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...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();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();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();//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();AS>Add>Attribute
db.MappingTables.Add()
db.MappingColumns.Add()
db.IgnoreColumns.Add()db.Queryable<T>().As("tableName").ToList();[SugarColumn(IsIgnore=true)]
public int TestId { get; set; }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");
})
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);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");
}db.CodeFirst.BackupTable().InitTables(typeof(CodeTable),typeof(CodeTable2)); //change entity backupTable
db.CodeFirst.InitTables(typeof(CodeTable),typeof(CodeTable2));
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);
};