Re: Badly planned queries with JOIN syntax

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От Greg Stark
Тема Re: Badly planned queries with JOIN syntax
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Msg-id 87d6jzy3r5.fsf@stark.dyndns.tv
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Ответ на Re: Badly planned queries with JOIN syntax  (Stephan Szabo <sszabo@megazone23.bigpanda.com>)
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Stephan Szabo <sszabo@megazone23.bigpanda.com> writes:

> On Fri, 4 Apr 2003, Phil Mayers wrote:
>
> > ANSI SQL92 had a "table.column *= otable.ocolumn" which equates to "table LEFT
> > OUTER JOIN otable on column=ocolumn").
>
> AFAICT SQL92 has no such syntax. It's hard to do without alot of
> limitations (because join order can be important to the results of the
> query with outer joins).

Fwiw, this is MSSQL's (and presumably Sybase's?) non-standard outer join syntax.

--
greg

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