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Re: Text Search zero padding

From: Richard Huxton <dev(at)archonet(dot)com>
To: Oleg Bartunov <oleg(at)sai(dot)msu(dot)su>
Cc: Richard Greenwood <richard(dot)greenwood(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: Text Search zero padding
Date: 2008-02-29 09:55:27
Message-ID: 47C7D68F.5010608@archonet.com (view raw or flat)
Thread:
Lists: pgsql-general
Oleg Bartunov wrote:
> On Thu, 28 Feb 2008, Richard Greenwood wrote:
> 
>> So far my best idea is to create a tsvector column containing both
>> padded and non-padded versions of the value. i.e. put both R1234 and
>> R0001234 into the tsvector column. This seems pretty brute force, and
>> I am pretty new to text search, so I'd welcome any suggestions.
> 
> create your dictionary, which index R0001234 as R0001234 and R1234
> Seems, dict_regex is your friend.
> http://vo.astronet.ru/arxiv/dict_regex.html

Nice - I was thinking something like that would be useful, but Googling 
hadn't found me anything. Thanks for that link Oleg.

Wouldn't it be more efficient to have the regex-dictionary map just to 
R1234 though? Or R0001234, I suppose.

-- 
   Richard Huxton
   Archonet Ltd

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