Re: Question with tsearch2 (or it might be a general one too)

Ritesh --

You are correct in thinking that "@@" is a special operator defined for tesearch2; it uses the GIST indexes to do a search, but more than that I can't say, since I am not really familiar with tsearch2. (In the postGIS world there is a vaguely equivalent operator, "&&", again using postgres' ability to define ones own data types and functions.

HTH,

Greg Williamson
DBA
GlobeXplorer LLC

-----Original Message-----
From: pgsql-general-owner(at)postgresql(dot)org on behalf of Ritesh Nadhani
Sent: Thu 10/19/2006 11:38 AM
To: pgsql-general(at)postgresql(dot)org
Cc:
Subject: [GENERAL] Question with tsearch2 (or it might be a general one too)

Hello

A newbie to PostgreSQL from MySQL and just trying to learn tsearch2. In
one of the examples at:

http://www.sai.msu.su/~megera/postgres/gist/tsearch/V2/docs/tsearch-V2-intro.html

the query given is:

SELECT intindex, strTopic FROM tblmessages
WHERE idxfti @@ to_tsquery('default', 'gettysburg &
address')
AND strMessage ~* '.*men are created equal.*';

What does the '@@' in the query means?

I did a search at:

http://search.postgresql.org/www.search?ul=http%3A%2F%2Fwww.postgresql.org%2Fdocs%2F8.1%2Finteractive%2F%25&fm=on&cs=utf-8&q=%40%40

an it dosnt return any result.

Is this specific to tsearch2? What does that mean?

Ritesh

---------------------------(end of broadcast)---------------------------
TIP 4: Have you searched our list archives?

http://archives.postgresql.org/

-------------------------------------------------------
Click link below if it is SPAM gsw(at)globexplorer(dot)com
"https://mailscanner.globexplorer.com/dspam/dspam.cgi?signatureID=453969c4232531465134470&user=gsw(at)globexplorer(dot)com&retrain=spam&template=history&history_page=1"
!DSPAM:453969c4232531465134470!
-------------------------------------------------------