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Re: [vox-tech] Call for SQL help
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Re: [vox-tech] Call for SQL help



On Fri, Apr 17, 2009 at 11:20:01AM -0700, Bill Kendrick wrote:
> 
> On Thu, Apr 16, 2009 at 06:06:21PM -0700, Bryan Richter wrote:
> > 1. Definetely break out subqueries. A possible starting point would be creating a temp table of interesting categories. Temp tables are indispensible.
> > 
> 
> Ah, my predecessor popped up and mentioned this discovery.  Instead of
> the subselect ("AND bc.categoryid IN ( SELECT ... )"), doing the following
> 'EXISTS' test does the same thing.
> 
> It now takes under 1 second, rather than 90 seconds.  A speed improvement
> of over 100x.  Yay :)
> 
>   bill.beers_owed_to_people++;

I could go for some beer. Are you buying? :)

-- 
Brian Lavender
http://www.brie.com/brian/
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