tsearch2 question...

[Net Virtual Mailing Lists]

Hello,

I have a quick question regarding tsearch2, hopefully this is an okay
place to ask because I couldn't find a tsearch2-specific mailing list..

Anyways, when the field which is indexed using tsearch2 is displayed in
it's entirety I want the searched keywords to be highlighted, just as in
a headline except that the entire document gets displayed instead of just
a summary of it..

In order for this to work well, it would seem that I need the same code
path as that used to generate the headline to begin with, otherwise
differences in stemming/etc could cause mis-matches...

My thought was to do:

SELECT bodytext_id,headline(bodytext,
to_tsquery('default','SEARCH_KEYS'),'
MaxWords=999999999,MinWords=999999999,ShortWord=0' ) FROM some_table WHERE
bodytext_id=SOME_ID

Does this seem like a 'reasonable' way to do this?... In not is there a
better way that you can think of?...

Thanks!

- GReg
---------------------------(end of broadcast)---------------------------
TIP 8: explain analyze is your friend

[Teodor Sigaev]

Net Virtual Mailing Lists wrote:

Hello,

I have a quick question regarding tsearch2, hopefully this is an okay
place to ask because I couldn't find a tsearch2-specific mailing list..

Anyways, when the field which is indexed using tsearch2 is displayed in
it's entirety I want the searched keywords to be highlighted, just as in
a headline except that the entire document gets displayed instead of just
a summary of it..

In order for this to work well, it would seem that I need the same code
path as that used to generate the headline to begin with, otherwise
differences in stemming/etc could cause mis-matches...

My thought was to do:

SELECT bodytext_id,headline(bodytext,
to_tsquery('default','SEARCH_KEYS'),'
MaxWords=999999999,MinWords=999999999,ShortWord=0' ) FROM some_table WHERE
bodytext_id=SOME_ID

Does this seem like a 'reasonable' way to do this?... In not is there a
better way that you can think of?...

Big value of MinWord is right way.
--
Teodor Sigaev E-mail: te****@sigaev.ru
---------------------------(end of broadcast)---------------------------
TIP 2: you can get off all lists at once with the unregister command
(send "unregister YourEmailAddressHere" to ma*******@postgresql.org)