Mmmm looks like a task for htdig://

--- Nigel Weeks <nweeks@...> escribió:


---------------------------------
I'm putting a search facility on our intranet, and
I've hit a wall.
My current idea is:

A table of words, with an integer key
Create table tbl_words (
int_word integer not null primary key,
str_word varchar(100) not null unique
);


A table of word id's, linked to an address
Create table tbl_pageword (
int_page integer not null,
int_word integer not null,
str_href varchar(200) not null,
primary key(int_page, int_word, str_href)
);

The problem is, doing 'and' searches.

For example: find the pages that contain ALL THREE
TERMS 'beer',
'chocolate', '4WD'

Subselects are slower than I'd like, as a new word
lookup has to be done for
each word. For example:

Select str_href from tbl_pageword where
int_word in (select int_word from tbl_words where
str_word = 'beer')
AND int_word in (select int_word from tbl_words where
str_word =
'chocolate')
AND int_word in (select int_word from tbl_words where
str_word = '4WD');

There has to be a better way. Any ideas? Even a
complete schema change is
welcomed.

Nige.



Nigel Weeks
Tech Support & Systems Developer
nweeks@...
www.examiner.com.au
71 - 75 Paterson Street
Launceston
Tasmania 7250
Australia
Phone: 03 6336 7234



[Non-text portions of this message have been removed]



++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Visit http://firebird.sourceforge.net and click the
Resources item
on the main (top) menu. Try Knowledgebase and FAQ
links !

Also search the knowledgebases at
http://www.ibphoenix.com

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++




SPONSORED LINKS

Technical support
Computer technical support
Compaq computer technical support

Compaq technical support
Hewlett packard technical support
Technical support services


---------------------------------
YAHOO! GROUPS LINKS


Visit your group "firebird-support" on the web.

To unsubscribe from this group, send an email to:
firebird-support-unsubscribe@yahoogroups.com

Your use of Yahoo! Groups is subject to the Yahoo!
Terms of Service.


---------------------------------








___________________________________________________________
Do You Yahoo!?
La mejor conexión a Internet y <b >2GB</b> extra a tu correo por $100 al mes. http://net.yahoo.com.mx