On 07/22/2010 07:44 PM, Oleg Bartunov wrote:
Don't guess, but read docs
http://www.postgresql.org/docs/8.4/interactive/textsearch-dictionaries.html#TEXTSEARCH-SIMPLE-DICTIONARY
12.6.2. Simple Dictionary
The simple dictionary template operates by converting the input token
to lower case and checking it against a file of stop words. If it is
found in the file then an empty array is returned, causing the token
to be discarded. If not, the lower-cased form of the word is returned
as the normalized lexeme. Alternatively, the dictionary can be
configured to report non-stop-words as unrecognized, allowing them to
be passed on to the next dictionary in the list.
d=# \dFd+ simple
List of text search
dictionaries
Schema | Name | Template | Init options
| Description
------------+--------+-------------------+--------------+-----------------------------------------------------------
pg_catalog | simple | pg_catalog.simple | | simple
dictionary: just lower case and check for stopword
By default it has no Init options, so it doesn't check for stopwords.
Guess what - I *have* read the docs which sais "...and checking it
against a file of stop words". What was unclear to me was whether or not
it was configured with a stopwords-file or not as default, which is not
the case I understand from your reply. Very good, fits my needs like a
glove:-) It might be worth considering updating the docs to make this
clearer?
So - can we rely on "simple" to remain this way forever (no Init
options) or is it better to make a copy of it with the same properties
as today?
It seems "simple" + the unaccent dict. available in 9.0 saves my day,
thanks Mr. Bartunov.
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