Re: default_text_search_config and expression indexes

Oleg Bartunov <oleg@sai.msu.su>

From: Oleg Bartunov <oleg@sai.msu.su>
To: tomas@tuxteam.de
Cc: Bruce Momjian <bruce@momjian.us>, Heikki Linnakangas <heikki@enterprisedb.com>, Ron Mayer <rm_pg@cheapcomplexdevices.com>, pgsql-hackers@postgresql.org
Date: 2007-08-09T10:03:13Z
Lists: pgsql-hackers
On Thu, 9 Aug 2007, tomas@tuxteam.de wrote:

> Maybe I'm missing something, but it seems to me that the configuration
> is more attached to a column/index thatn to the whole database. If
> there's a default in an expression, I'd rather expect this default to be
> drawn from the index involved than from a global value (like a functional
> index does now).

I'm tired to repeat - index itself doesn't know about configuration !
It just index tsvector data type. tsvector in turn can be obtained
using various ways:
1. manually
2. to_tsvector

tsvector can be stored in a separate attribute or be fully virtual
like in expressional index.

Moreover, tsvector can be obtained using various configurations depending
on your application.


 	Regards,
 		Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83