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 pages which has all the above 3 IDs assigned to them (1,2,4), not just any of them but all of them?

Is there a way? any other operator? I have already tried = Any and = All but no luck.

Answer 1

The term for this type of problem is relational division. One way below.

SELECT PageID
FROM   pagetags
WHERE  TagID IN ( 1, 2, 4 )
GROUP  BY PageID
HAVING Count(DISTINCT TagID) = 3