| From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | ocie(at)paracel(dot)com |
| Cc: | M(dot)Boekhold(at)et(dot)tudelft(dot)nl, vadim(at)sable(dot)krasnoyarsk(dot)su, hackers(at)postgreSQL(dot)org |
| Subject: | Re: [HACKERS] Re: indexing words slow |
| Date: | 1998-03-12 03:28:32 |
| Message-ID: | 199803120328.WAA02424@candle.pha.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
> > btw. to make things clearer on what I mean with '^lling' and '^tones', I
> > really mean "'^lling' *AND* '^tones'", ie. a join :) actually pretty good
> > don't ya think? :)
>
> This sounds like an unsatisfyable query, perhaps if the database
> figured this out, it could return zero rows without even hitting the
> index. If the first item matched, the first character is an 'l', if
> the second matches, a 't'. It can't be both an 'l' and a 't'!
He has to instances of the table, and is looking for index entries with
both words. We have only been sharing part of the conversation.
--
Bruce Momjian | 830 Blythe Avenue
maillist(at)candle(dot)pha(dot)pa(dot)us | Drexel Hill, Pennsylvania 19026
+ If your life is a hard drive, | (610) 353-9879(w)
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