Re: extra info - curious delay on view/where

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От Gary Stainburn
Тема Re: extra info - curious delay on view/where
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Msg-id 200410281142.46266.gary.stainburn@ringways.co.uk
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Ответ на curious delay on view/where  (Gary Stainburn <gary.stainburn@ringways.co.uk>)
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On Thursday 28 October 2004 11:16 am, Gary Stainburn wrote:
> Hi folks.
>
> I have the following view:
>
> CREATE VIEW "stock_available" as
>   SELECT * FROM stock_details
>   WHERE available = true AND visible = true AND
>   location not in (SELECT descr FROM ignored);
>
> Stock_details is itself a view pulling in a number of tables.
> Everything works fine until I try to pull in only the details for a
> specific branch, using the following.
>
> select * from stock_available where branch = 'Leeds';
> or
> select * from stock_available where branch = 'Doncaster';
>
> At this point, the query takes 11 seconds. Any other quiery,
> including
[snip]

Once thing I forgot to mention.  If I run the above on the base view 
stock_details, it returns in < 1 second too.
-- 
Gary Stainburn
This email does not contain private or confidential material as it
may be snooped on by interested government parties for unknown
and undisclosed purposes - Regulation of Investigatory Powers Act, 2000     



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