如何在实体框架中执行原始sql查询？

我正在使用带有实体框架5的asp.net mvc 3.我有我的.edmx文件&能够使用 linq或SP与我的数据库进行交互,但我想运行一些原始的sql语句.我正在尝试这样的事情：

Using(var ctx=new HREntities())
{
  ctx.Database.ExecutesqlCommand("insert into Employees values {0},{1}",model.EMPLOYEEID,model.EMPLOYEENAME);
  ctx.SaveChanges();
}

是否有可能以这种方式执行SQL查询？谢谢.

解决方法

您可以执行以下类型的查询：

>返回特定类型实体的实体类型的SQL查询.

using (var ctx = new SchoolDBEntities())
 {

     var studentList = ctx.Students.sqlQuery("Select * from Student").ToList<Student>();

}

>返回基本数据类型的非实体类型的SQL查询.

using (var ctx = new  SchoolDBEntities())
{

var studentName = ctx.Students.sqlQuery("Select studentid,studentname 
    from Student where studentname='New Student1'").ToList();
}


 //Error
 using (var ctx = new SchoolDBEntities())
 {                
     //this will throw an exception
     var studentName = ctx.Students.sqlQuery("Select studentid as id,studentname as name 
        from Student where studentname='New Student1'").ToList();
 }

 //sql query for non-entity types:
  using (var ctx = new SchoolDBEntities())
  {
       //Get student name of string type
      string studentName = ctx.Database.sqlQuery<string>("Select studentname 
    from Student where studentid=1").FirstOrDefault<string>();
  }

>对数据库的原始sql命令.

using (var ctx = new SchoolDBEntities())
      {

           //Update command
           int noOfRowUpdated = ctx.Database.ExecutesqlCommand("Update student 
        set studentname ='changed student by command' where studentid=1");
          //Insert command
         int noOfRowInserted = ctx.Database.ExecutesqlCommand("insert into student(studentname) 
        values('New Student')");
         //Delete command
         int noOfRowDeleted = ctx.Database.ExecutesqlCommand("delete from student 
        where studentid=1");

       }

你也可以参考this