From: | Oleg Bartunov <oleg(at)sai(dot)msu(dot)su> |
---|---|
To: | Marek Lewczuk <newsy(at)lewczuk(dot)com> |
Cc: | Lista dyskusyjna pgsql-general <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: intarray index |
Date: | 2005-11-28 21:35:04 |
Message-ID: | Pine.GSO.4.63.0511290034510.29329@ra.sai.msu.su |
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Lists: | pgsql-general |
On Mon, 28 Nov 2005, Marek Lewczuk wrote:
> Hello,
> I have a question about IntArray contrib package. The docs says:
> "...current implementation provides index support for one-dimensional array
> of
> int4's - gist__int_ops, suitable for small and medium size of arrays (used on
> default), and gist__intbig_ops for indexing large arrays (we use superimposed
> signature with length of 4096 bits to represent sets)..."
>
> How many elements within single array is suggested within small/medium/large
> array ? I have arrays with up to 200 elements - which index I should use ?
gist__intbig_ops
>
> Thanks.
>
> ML
>
>
>
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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
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