Re: First version of multi-key index support for GiST

On Sat, 26 May 2001, Bruce Momjian wrote:

>
> Do you want this applied to the current CVS?
>

Sure. I want our development to be in sync with cvs
There are several problems we have to resolve but basic functionality
is there and seems works for us.

Oleg

> > We have implemented multi-key index support for GiST. Patch is available
> > from http://www.sai.msu.su/~megera/postgres/gist/code/7.1.2/patch_multikeygist.7.1.2.gz
> > The patch could be applied for postgresql version 7.1.2 and current sources 7.2
> >
> > 1. initdb is required. But, it's possible just to execute update
> > update pg_am set amstrategies = 12 where amname = 'gist';
> >
> > 2. You have to recompile all gist_*_ops functions
> >
> > 3. multi-key indexes works only for ??? gist__int_ops and
> > gist__intbig_ops (from contrib/intarray), because they have
> > support for NULLs.
> >
> > As a bonus we fixed several memory leaks in old GiST code.
> >
> >
> > Example:
> >
> > create index mgix on tabletest using gist (b gist_int_ops, a
> > gist__intbig_ops ) with ( islossy );
> >
> >
> > Regards,
> > Oleg
> > _____________________________________________________________
> > Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
> > Sternberg Astronomical Institute, Moscow University (Russia)
> > Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
> > phone: +007(095)939-16-83, +007(095)939-23-83
> >
> >
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> >
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> >
>
>

Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83