How to select item matching Only IN List in sql server

Question

How can one select only the items he want in the IN list? for example

select * from pagetags where TagID in (1,2,4)

Now I want all the page

Answer 1

SELECT distinct(PageID)
FROM   pagetags
WHERE  TagID IN (1,2,4)
and PageID in
(select distinct(PageID) from pagetags group by PageID having count(TagID)=3)
group by PageID