How to do a full-text search words within some proximity of each other?

Started by Matthew Wilsonover 13 years ago2 messagesgeneral
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#1Matthew Wilson
matt@tplus1.com

I noticed in elastic search (ES), you can do queries like

"a b"~4

I think this query will match stuff like "a b" and "a x x b" but not
something like "a x x x x x x x x b".

I'm not sure if this kind of thing is possible with postgresql full
text search. Is it possible?

I understand that I can do a query and rank the results by how closely
the words are to each other, but I want to exclude any matches where
the words are not within two words of each other.

Thanks in advance!

Matt

--
W. Matthew Wilson
matt@tplus1.com
http://tplus1.com

#2Oleg Bartunov
oleg@sai.msu.su
In reply to: Matthew Wilson (#1)
Re: How to do a full-text search words within some proximity of each other?

something like this ?

http://www.sai.msu.su/~megera/wiki/2009-08-12
http://www.sai.msu.su/~megera/postgres/talks/algebra-fts.pdf

Unfortunately, we get no support for this work, so we stop maintaining
phrase-search patch. I even thinking about kikstarter.com to get money
for this project :)

Oleg
On Mon, 24 Sep 2012, W. Matthew Wilson wrote:

I noticed in elastic search (ES), you can do queries like

"a b"~4

I think this query will match stuff like "a b" and "a x x b" but not
something like "a x x x x x x x x b".

I'm not sure if this kind of thing is possible with postgresql full
text search. Is it possible?

I understand that I can do a query and rank the results by how closely
the words are to each other, but I want to exclude any matches where
the words are not within two words of each other.

Thanks in advance!

Matt

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