--- Koen Bok <[EMAIL PROTECTED]> wrote:
> I am doing some optimization on our search, but I need some advise...
>
> table: item
>
> id name
> --------------------------------------
> 1 iPod
> 2 Zune
> 3 Walkman
>
> table: search_item
>
> id_search id_item
> --------------------------------------
> 1 1
> 1 2
> 1 3
> 2 2
> 2 3
> 3 1
> 3 3
>
>
> Now what I want to have is the items that match with id_search 1 and
> 2 and 3. Therefore I use the following SQL query.
SELECT id_search
FROM Search_item
GROUP BY id_search
HAVING Count( * ) = 3
AND Max( id_item ) = 3
AND Min( id_item ) = 1;
Regards,
Richard Broersma Jr.
---------------------------(end of broadcast)---------------------------
TIP 4: Have you searched our list archives?
http://archives.postgresql.org
