From: | PostgreSQL - Hans-Jürgen Schönig <postgres(at)cybertec(dot)at> |
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To: | Oleg Bartunov <oleg(at)sai(dot)msu(dot)su> |
Cc: | Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: k-neighbourhood search in databases |
Date: | 2011-04-08 12:44:32 |
Message-ID: | 6F1154B9-6F89-4A36-A0C8-1FB581F85A60@cybertec.at |
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Lists: | pgsql-hackers |
hello ...
i have put some research into that some time ago and as far as i have seen there is a 99% chance that no other database can do it the way we do it. it seems nobody comes even close to it (especially not in the flexibility-arena).
oracle: disgusting workaround ...
http://www.orafaq.com/usenet/comp.databases.oracle.misc/2005/11/03/0083.htm
db2: disgusting workaround (no server side code it seems)
sybase: disgusting workaround (no serverside code it seems)
microsoft: there seems to be something coming out (or just out) but i have not seen anything working yet.
regards,
hans
On Apr 8, 2011, at 2:21 PM, Oleg Bartunov wrote:
> Hi there,
>
> I'm interesting if other databases provides built-in effective knn search ? Google didn't help me.
>
> Regards,
> Oleg
> _____________________________________________________________
> Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru)
> Sternberg Astronomical Institute, Moscow University, Russia
> Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
> phone: +007(495)939-16-83, +007(495)939-23-83
>
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