At 11:23 PM +0800 6/30/07, Niu Kun wrote:
>Dear all,
>
>I'm planning to add fulltext search to my database.
>I've got the following test command:
>create table test(id int, name varchar(20));
>alter table test add fulltext(name);
>insert into test values(1,"hello world");
>insert into test values(1,"hello");
>
>When I execute the fulltext search command, I've got the following.
>mysql> select * from test where match(name) against("hello");
>Empty set (0.00 sec)
>
>Would anyone be kind enough to tell me how I can find hello in my text?
>Any help would be appreciated.
>Thanks in advance.
>
To quote from
http://dev.mysql.com/doc/refman/5.0/en/fulltext-search.html
"... words that are present in more than 50% of the rows are
considered common and do not match."
'hello' appears in both (100%) of your records above, so it will not
match. You need to insert more test data before MySQL has enough
words to compute valid relevances.
steve
--
+--------------- my people are the people of the dessert, ---------------+
| Steve Edberg http://pgfsun.ucdavis.edu/ |
| UC Davis Genome Center sbedberg@stripped |
| Bioinformatics programming/database/sysadmin (530)754-9127 |
+---------------- said t e lawrence, picking up his fork ----------------+
