| From: | "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com> |
|---|---|
| To: | Christopher Kings-Lynne <chris(dot)kings-lynne(at)calorieking(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Tim Allen <tim(at)proximity(dot)com(dot)au>, Thomas Hallgren <thomas(at)tada(dot)se>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Worthwhile optimisation of position()? |
| Date: | 2006-03-24 10:01:45 |
| Message-ID: | 20060324100145.GM90527@pervasive.com |
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| Lists: | pgsql-hackers |
On Fri, Mar 24, 2006 at 02:58:54PM +0800, Christopher Kings-Lynne wrote:
> >Yeah. AFAICS the transformation Chris suggested is valid. I'm really
> >dubious that it's worth expending planner cycles to look for it though.
> >LIKE is something that everybody and his brother uses, but who uses this
> >position()=0 locution?
>
> One of our junior developers :) Which is why I noticed it.
Sounds like time to bust out the cluebat. :)
--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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