Re: Count equals 0

Rudi,

> What I would like to see is something like:
>
> site a : 0
> site b : 3
> site c : 6
>
> I've tries Left outer join's with and without coalesce without joy so far.
> Please check out my query.

You're going to need to nest your query:

SELECT um2.site_name, COALESCE(count_um.total, 0) as total
FROM user_main um2 LEFT OUTER JOIN
(SELECT um.site_name, count(um.cus_id) AS total
FROM user_main um
WHERE NOT EXISTS
(
SELECT cus_id
FROM user_sys_messages usm
WHERE usm.cus_id = um.cus_id
)
GROUP BY um.site_name) count_um
ON um2.site_name = count_um.site_name
ORDER BY um2.site_name

--
Josh Berkus
Aglio Database Solutions
San Francisco