Re: Count equals 0

Hi,

Thank you kindly for your suggetions.
Greg's suggestion was closest to what I needed ( spot on in fact )

Cheers
Rudi.

greg(at)turnstep(dot)com wrote:

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>>I've tries Left outer join's with and without coalesce without joy so far.
>>Please check out my query.
>>
>>
>
>Your query is good, let's just make the whole thing a subselect
>and use an outer join to get the missing sites:
>
>SELECT u2.site_name, COALESCE(u1.total, 0)
>FROM
>(
> SELECT site_name, COUNT(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 site_name
>) AS u1
>RIGHT OUTER JOIN user_main u2 USING (site_name)
>GROUP BY 1,2
>ORDER BY u2.site_name;
>
>
>You could also write this as a LEFT OUTER JOIN (by putting the subselect second),
>but I think it is clearer if the USING or ON is as close as possible to the
>JOIN statement.
>
>
>- --
>Greg Sabino Mullane greg(at)turnstep(dot)com
>PGP Key: 0x14964AC8 200303181009
>
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