MySQL didn't like that one...got a syntax error...
Rick
> -----Original Message-----
> From: Anders Green [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, November 17, 2004 9:41 AM
> To: CF-Talk
> Subject: Re: How do I rewrite this as a join query?
>
>
> At 09:24 AM 11/17/2004, Rick Faircloth wrote:
> >Good morning, all...
> >
> >I'm using MySQL (4.0) version, which doesn't support
> >subqueries, so I need to rewrite this as a join query...how
> would I do that?
> >
> >Select CAL.EmailAddress
> > from classroom_access_list CAL
> >where CAL.EmailAddress
> > not in (Select S.EmailAddress from staff S)
> >
> >What I'm after is a query that gives me all the email
> addresses in the
> >classroom_access_list table and the staff table without
> duplicates...
>
> Not too sure, but something like
>
> SELECT DISTINCT EmailAddress
> FROM
> SELECT EmailAddress
> FROM classroom_access_list
> UNION
> SELECT EmailAddress
> FROM staff
>
> Since you don't want the two sets of results to actually
> key together, a union makes more sense: just append the
> results of one to the bottom of the other. Then the distinct
> will find all the unique ones. However.... I just realized
> that this may count as a subquery too!
>
> Anders
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