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Home -> Community -> Usenet -> comp.databases.theory -> Re: Simple SQL?
Pierre G. Boutquin wrote:
> "Isaac Blank" <izblank_at_yahoo.com> wrote in message
> news:u9XN6.91$At.114013_at_news.pacbell.net...
> > First, not every SELECT with subqueries can be converted to a
> > join
>
> Hmmm. Are you sure your assertion is correct?
I think he is. :-) Especially 'NOT IN' and 'NOT EXISTS' subqueries can usually not be expressed with joins.
-- Jan HiddersReceived on Mon May 21 2001 - 02:42:23 CDT
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