Как использовать или преобразовать сценарий T-SQL в функцию в веб-приложении MVC 3?

Я попытался создать этот sql-скрипт из t-sql в Linq в sql, но он не возвращает одни и те же данные оба раза.

Входными данными должны быть @qid, которое является целым числом, и @userid, которое также является целым числом. Результатом является последний ответ каждого пользователя на основе DateCreated.

Действительный код приведен ниже:

DECLARE @userid int;
DECLARE @qid int;
DECLARE @userteamid int;
DECLARE @questionidList TABLE
( QuestionId int);
DECLARE @teamhistory TABLE
( Id int,
  Userid int,
  DateCreated datetime2,
  UserName nvarchar(35)
);

SET @userid=3
SET @qid=2
SET @userteamid = (SELECT TeamId
                   FROM UserProfile
                   WHERE UserId=@userid);

INSERT INTO 
     @questionidList 
SELECT Questions.QuestionId
FROM Questions
INNER JOIN TeamQuestionRosters ON Questions.QuestionId=TeamQuestionRosters.QuestionId
WHERE TeamId=@userteamid
       AND Questions.QuestionId=@qid;


INSERT INTO 
@teamhistory (Id, UserName, Userid, DateCreated)
SELECT
d.ResponseId AS Id, f.UserName AS UserName, f.UserId AS Userid, c.DateCreated AS DateCreated
FROM  Responses as c
INNER JOIN ResponseDetails AS d ON c.ResponseId=d.ResponseId
INNER JOIN UserProfile as f on c.UserProfileId=f.UserId
WHERE c.QuestionId IN (SELECT QuestionId FROM @questionidList)



SELECT b.Id, b.DateCreated, b.UserName FROM @teamhistory AS b
WHERE b.datecreated = 
                    (SELECT MAX(a.DateCreated) 
                     FROM @teamhistory AS a 
                     WHERE a.Userid=b.Userid)

Последний оператор Select - это то, откуда должны поступать выходные / возвращаемые данные. Вот часть таблицы ответов:

+---+---+------+---------------------+------+-------+------+
|ID |QID|UserID|DateCreated          |BS    |Reason |UserID|
+---+---+------+---------------------+------+-------+------+
|140|2  |3     |1/14/2014 04:57:48 PM|0.3200|60 test|3     |
+---+---+------+---------------------+------+-------+------+
|141|2  |3     |1/14/2014 04:58:32 PM|0.3200|60 test|3     |
+---+---+------+---------------------+------+-------+------+
|142|2  |3     |1/14/2014 04:58:46 PM|0.3200|60 test|3     |
+---+---+------+---------------------+------+-------+------+
|149|2  |4     |1/19/2014 12:00:00 AM|0.0000|reason2|4     |
+---+---+------+---------------------+------+-------+------+
|150|2  |4     |1/15/2014 12:00:00 AM|0.0000|dfknl  |4     |
+---+---+------+---------------------+------+-------+------+
|151|2  |4     |1/15/2014 12:00:00 AM|0.0000|dkfjnbs|4     |
+---+---+------+---------------------+------+-------+------+
|152|2  |4     |1/05/2014 12:00:00 AM|0.0000|dskfljn|4     |
+---+---+------+---------------------+------+-------+------+
|153|2  |222   |1/16/2014 12:00:00 AM|0.0000|lksdnf |222   |
+---+---+------+---------------------+------+-------+------+

Вот таблица вопросов с одной строкой для простоты:

+--+---------------+----------------------+---------+---------+-----------+
|Id|Title          |DateCreated           |Keywords |is_active|Description|
+--+---------------+----------------------+---------+---------+-----------+
|2 |Random Question|10/19/2013 12:00:00 AM|Something|True     |Random text|
+--+---------------+----------------------+---------+---------+-----------+

Это правильный вывод:

+---+----------------------+--------+
|Id |DateCreated           |UserName|
+---+----------------------+--------+
|153|01/16/2014 12:00:00 AM|dtaver  |
+---+----------------------+--------+
|149|01/19/2014 12:00:00 AM|lbryan  |
+---+----------------------+--------+
|142|01/14/2014 04:58:46 PM|jsteve  |
+---+----------------------+--------+

Моя попытка превратить это в Linq:

int userid= WebSecurity.GetUserId(User.Identity.Name); 
int qid=2;  //question id
int userteamid = (from w in db.UserProfiles
                   where w.UserId.Equals(userid)
                   select w.TeamId).First().Value;

 var query3 = (from c in db.Responses
               join d in db.ResponseDetails on c.ResponseId equals d.ResponseId
               join f in db.UserProfiles on c.UserProfile.UserId equals f.UserId
                        where c.QuestionId==qid 
               select new TeamForecastHistory {
                                         Id = d.ResponseId, 
                                         Reason = c.Reason, 
                                         UserName = f.UserName, 
                                         DateCreated = c.DateCreated 
                                        }).ToList();

ViewBag.info = (from a in query3
                where a.DateCreated.Equals((from b in query3 
                                            where a.Userid==b.Userid 
                                            select b.DateCreated).Max())   
               select new TeamForecastHistory { Id = a.Id, 
                                                Reason = a.Reason, 
                                                UserName = a.UserName, 
                                                DateCreated = a.DateCreated 
                                               }).ToList();