Re: Using index for "like 'ABC%'" type query

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От Bruce Momjian
Тема Re: Using index for "like 'ABC%'" type query
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Msg-id 200304180318.h3I3Im813344@candle.pha.pa.us
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Ответ на Re: Using index for "like 'ABC%'" type query  (Jeffrey Melloy <jmelloy@visualdistortion.org>)
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See the FAQ about index usage.

---------------------------------------------------------------------------

Jeffrey Melloy wrote:
> There is a module called "tsearch" in the contrib directory which works
> quite well.
> On Thursday, April 17, 2003, at 09:56  PM, lec wrote:
>
> > For current version of postgresql, is it possible for a query like
> > below to utilize an index?
> >
> > select item_name from item where item_code like 'ABC%';
> >
> > Earlier versions of postgresql, eg, 6.5.3 can utilize the index.
> >
> >
> > Thanks,
> > Thomas.
> >
> >
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> http://www.postgresql.org/docs/faqs/FAQ.html
>

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