From: | Edward Murray <mail(at)avenuedesign(dot)net> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: Left Outer Join Question |
Date: | 2002-02-27 06:09:50 |
Message-ID: | a5htb0$1n81$1@jupiter.hub.org |
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Lists: | pgsql-sql |
On Wed, 27 Feb 2002 16:59:23 +1100, Tom Lane wrote:
> "Christopher Kings-Lynne" <chriskl(at)familyhealth(dot)com(dot)au> writes:
>> What's probably happening is that count isn't counting NULLs?
>
> As per spec. If you want to count records independently of whether any
> particular column is NULL or not, use count(*). See the docs, notably
> http://www.ca.postgresql.org/users-lounge/docs/7.2/postgres/sql-expressions.html#SYNTAX-AGGREGATES
I think the problem is that the rows are not being returned by the query
at all not that any particular column is null. Do I need to perform
another outer join? I am not sure how to tackle this problem.
> regards, tom lane
>
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