Convert SQL to LINQ to Entities WHERE IN clause

Question

How can I convert this sql statetment to LINQ to Entities?

SQL Statement:

Select * from Departments where DepartmentID  in (Select DepartmentID from Empl         


        

Answer 1

(from d in db.Departments
 join e in db.Employees
     on d.DepartmentID equals e.DepartmentID
 where e.FirstName.Contains("FirstName") ||
       e.LastName.Contains("LastName")
 select t).Distinct()