You may find this article useful.

http://instantbadger.blogspot.com/2006/07/faking-left-outer-join-in-query-of
.html

Paul Alkema
http://paulalkema.com/


-----Original Message-----
From: Mahcsig [mailto:[email protected]] 
Sent: Monday, October 25, 2010 4:43 PM
To: cf-talk
Subject: Re: left outer join in query of query


You can actually use the old SQL syntax to do inner joins in a qoq,
haven't gotten a left join to work though.
this fails:
                <cfquery dbtype="query" name="tmp">
                        SELECT *
                                FROM t1 inner join t2
                                  ON t1.id = t2.id
                </cfquery>
this works though:
                <cfquery dbtype="query" name="tmp">
                        SELECT *
                                FROM t1, t2
                                WHERE t1.id = t2.id
                </cfquery>

~Mahcsig




On Mon, Oct 25, 2010 at 1:35 PM, Paul Alkema
<[email protected]> wrote:
>
> Hi Nathan,
> Both cf8 and cf9 allow for left outer joins when doing normal queries
> however as far as I know query of query's does not support joins.
>
> On a side note though, my general rule of thumb is if I need to use a
query
> of queries for anything other than changing the order of my structure,
than
> I really need to evaluate my original SQL query and looped query of
queries
> are big programming no no.
>
> Just my 2 cents.. : )
>
> Paul Alkema
> http://paulalkema.com/
>
>
> -----Original Message-----
> From: Nathan Chen [mailto:[email protected]]
> Sent: Monday, October 25, 2010 1:53 PM
> To: cf-talk
> Subject: left outer join in query of query
>
>
> All:
>
>
>
> I am on CF 8 now. Does anyone know if CF 9 supports left outer join in
> query of query? CF 8 doesn't allow left outer join.
>
>
>
> Nathan Chen
>
>
>
>
>
> 



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