Re: [GENERAL] slow queries

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От David Hartwig
Тема Re: [GENERAL] slow queries
Дата
Msg-id 3602703D.8FF25251@insightdist.com
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Ответ на Re: [GENERAL] slow queries  (Thomas Good <tomg@nrnet.org>)
Ответы Re: [GENERAL] slow queries  (Thomas Good <tomg@admin.nrnet.org>)
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Thomas Good wrote:

> On Thu, 17 Sep 1998, Howie wrote:
>
> Howie,
>
> I have a query that looks up a patient's placement (which ward)
> in one table and then looks up diagnostic and demographic data
> in another...takes 53 seconds.  Ouch.
>
> However, when I use table aliasing...the query output is on the
> screen *before* I submit the query.  ;-)
>
> I'll send syntax, if you like.

I would like to see it!   I was not aware that table aliasing could have any impact
on performance.


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