Re: Single Quote in tsquery - Mailing list pgsql-sql

From Alvaro Herrera
Subject Re: Single Quote in tsquery
Date
Msg-id 20080806221849.GA3676@alvh.no-ip.org
Whole thread Raw
In response to Single Quote in tsquery  (Ryan Wallace <rywall@interchange.ubc.ca>)
List pgsql-sql
Ryan Wallace wrote:

> I am trying to perform a full text search for the word 'ksan (which
> starts with a quote). After much frustration and syntax errors I
> stumbled upon the following statement which seems to work:
> 
> select *
> from items
> where to_tsvector(name) @@ to_tsquery(E'[\']ksan')
> 
> I would like to know if this is actually the correct way to search for
> this word? The use of brackets isn't documented anywhere that I can
> find so I'm not sure if it is even doing what I want it to do or if
> the correct result is just a coincidence.

I think the tsearch grammar supports something it calls "simplified
regular expressions" or some such, which includes character classes
(delimited by brackets).  So it would seem that what you show is
actually supported and correct.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.


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