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@ -20,11 +20,18 @@ https://github.com/sunkaixuan/SqlSugar/wiki/AttributeCofnig
### 1.2 Introduction
```c
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 => NBORM.IsNullOrEmpty(it.Name)).ToList();
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 => NBORM.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 => NBORM.AggregateCount(it.Id) > 10)
.Select(it =>new { id = NBORM.AggregateCount(it.Id) }).ToList();
```
### 1.3 Page
@ -52,26 +59,28 @@ var skip5 = db.Queryable<Student>().Skip(5).ToList();
//join 2
var list = db.Queryable<Student, School>((st, sc) => new object[] {
JoinType.Left,st.SchoolId==sc.Id
}).ToList();
})
.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
}).ToList();
})
.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<Student,School,ViewModelStudent>((st,sc)=>new ViewModelStudent { Name= st.Name,SchoolId=sc.Id }).ToList();
}).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<School>(sc=>sc.Id,OrderByType.Desc)
.Select<Student, School, ViewModelStudent>((st, sc) => new ViewModelStudent { Name = st.Name, SchoolId = sc.Id }).ToList();
.OrderBy((st,sc)=>sc.Id,OrderByType.Desc)
.Select((st, sc) => new ViewModelStudent { Name = st.Name, SchoolId = sc.Id }).ToList();
```
### 1.5 SqlFunctions
@ -141,6 +150,28 @@ var t3 = db.Ado.GetDataTable("select 1 as id");
//more
//db.Ado.GetXXX...
```
### 1.9 Where
```c
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
```c