From: | Vincent Bernat <bernat(at)luffy(dot)cx> |
---|---|
To: | Oleg Bartunov <oleg(at)sai(dot)msu(dot)su> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Prefix search, word completion, full text search |
Date: | 2007-12-30 10:38:47 |
Message-ID: | m3ir2gii14.fsf@neo.luffy.cx |
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Lists: | pgsql-general |
OoO En ce début de soirée du samedi 29 décembre 2007, vers 21:50, Oleg
Bartunov <oleg(at)sai(dot)msu(dot)su> disait:
>> GIST or GIN (I don't remember) should allow to search for prefix. How
>> can I query them?
> there is no built-in. For your purpose I'd create separate table with
> words you want to be completed (anywa, you dont complete garbage words)
> and write simple dictionary which generates all prefixes beginning
> from minlen (about 3) for input word and use it to create GIN index.
If I have a table with all the words that I want to complete, why would
I use something more complex than this?
SELECT word FROM words WHERE word LIKE 'foo%'
Does such a search can't use normal index?
> Should works. IIRC, someone already asked about such dictionary and even
> posted such dictionary.
Do you have some keywords to search for? "dictionary prefix" does not
match anything useful.
Thanks.
--
Write clearly - don't be too clever.
- The Elements of Programming Style (Kernighan & Plauger)
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