In case Florian and I don't finish his changes to this contrib before

beta, at least get this stuff in.

ftipatch.txt - Updates to docs and scripts.  Run in the fulltextindexdir
WARNING - Add to fulltextindex dir
uninstall.sql - Add to fulltextindex dir
This commit is contained in:
Bruce Momjian 2002-09-02 06:27:04 +00:00
parent 1f8a63eb08
commit f68fe6716c
5 changed files with 31 additions and 5 deletions

View File

@ -50,7 +50,7 @@ string), btree indices can be used by PostgreSQL.
Now, how do we create the trigger that maintains the fti-table? First: the
fti-table should have the following schema:
create cds-fti ( string varchar(N), id oid );
create cds-fti ( string varchar(N), id oid ) without oids;
Don't change the *names* of the columns, the varchar() can in fact also
be of text-type. If you do use varchar, make sure the largest possible

View File

@ -0,0 +1,25 @@
WARNING
-------
This implementation of full text indexing is very slow and inefficient. It is
STRONGLY recommended that you switch to using contrib/tsearch which offers these
features:
Advantages
----------
* Actively developed and improved
* Tight integration with OpenFTS (openfts.sourceforge.net)
* Orders of magnitude faster (eg. 300 times faster for two keyword search)
* No extra tables or multi-way joins required
* Select syntax allows easy 'and'ing, 'or'ing and 'not'ing of keywords
* Built-in stemmer with customisable dictionaries (ie. searching for 'jellies' will find 'jelly')
* Stop words automatically ignored
* Supports non-C locales
Disadvantages
-------------
* Only indexes full words - substring searches on words won't work.
eg. Searching for 'burg' won't find 'burger'
Due to the deficiencies in this module, it is quite likely that it will be removed from the standard PostgreSQL distribution in the future.

View File

@ -25,7 +25,7 @@
* '/usr/local/pgsql/lib/contrib/fti.so' language 'C';
*
* -- Create the FTI table
* create table product_fti (string varchar(255), id oid);
* create table product_fti (string varchar(255), id oid) without oids;
*
* -- Create an index to assist string matches
* create index product_fti_string_idx on product_fti (string);

View File

@ -1,3 +1,3 @@
create function fti() returns trigger as
'MODULE_PATHNAME'
language 'C';
CREATE OR REPLACE FUNCTION fti() RETURNS trigger AS
'MODULE_PATHNAME', 'fti'
LANGUAGE 'C' VOLATILE CALLED ON NULL INPUT;

View File

@ -0,0 +1 @@
DROP FUNCTION fti() CASCADE;