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Update README.md

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sunkaixuan 2017-09-17 11:12:02 +08:00 committed by GitHub
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@ -103,6 +103,20 @@ JoinType.Left,st.SchoolId==sc.Id
.Select((st, sc) => new ViewModelStudent { Name = st.Name, SchoolId = sc.Id }).ToList();
```
### subquery
```c
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
```c
var t1 = db.Queryable<Student>().Where(it => SqlFunc.ToLower(it.Name) == SqlFunc.ToLower("JACK")).ToList();