How to use 'In' SQL keyword in Entity Framework?

Question

This is my SQL command

SELECT KEY,NAME
from  COMPANY c 
WHERE     KEY IN (select KEY from USER_COMPANY  where UserId = @UserId)
order by NAME asc
         


        

Answer 1

Note that this SQL query has the exact same meaning:

SELECT c.KEY, c.NAME
FROM COMPANY c
JOIN (SELECT DISTINCT KEY FROM USER_COMPANY where UserId = @UserId) u
ON U.KEY = C.KEY
ORDER BY c.NAME asc

So you should be able to just do:

var userCompany = (from u in db.USER_COMPANY
                   where u.UserId == UserId 
                   select(u.KEY)).Distinct();

var result = from c in db.COMPANY
             join u in userCompany
             on c.KEY = u.KEY
             select new {c.KEY, c.NAME};