MySQL FULLTEXT not working
- by Ross
I'm attempting to add searching support for my PHP web app using MySQL's FULLTEXT indexes.
I created a test table (using the MyISAM type, with a single text field a) and entered some sample data. Now if I'm right the following query should return both those rows:
SELECT * FROM test WHERE MATCH(a) AGAINST('databases')
However it returns none. I've done a bit of research and I'm doing everything right as far as I can tell - the table is a MyISAM table, the FULLTEXT indexes are set. I've tried running the query from the prompt and from phpMyAdmin, with no luck. Am I missing something crucial?
UPDATE: Ok, while Cody's solution worked in my test case it doesn't seem to work on my actual table:
CREATE TABLE IF NOT EXISTS `uploads` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` text NOT NULL,
`size` int(11) NOT NULL,
`type` text NOT NULL,
`alias` text NOT NULL,
`md5sum` text NOT NULL,
`uploaded` datetime NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=6 ;
And the data I'm using:
INSERT INTO `uploads` (`id`, `name`, `size`, `type`, `alias`, `md5sum`, `uploaded`) VALUES
(1, '04 Sickman.mp3', 5261182, 'audio/mp3', '1', 'df2eb6a360fbfa8e0c9893aadc2289de', '2009-07-14 16:08:02'),
(2, '07 Dirt.mp3', 5056435, 'audio/mp3', '2', 'edcb873a75c94b5d0368681e4bd9ca41', '2009-07-14 16:08:08'),
(3, 'header_bg2.png', 16765, 'image/png', '3', '5bc5cb5c45c7fa329dc881a8476a2af6', '2009-07-14 16:08:30'),
(4, 'page_top_right2.png', 5299, 'image/png', '4', '53ea39f826b7c7aeba11060c0d8f4e81', '2009-07-14 16:08:37'),
(5, 'todo.txt', 392, 'text/plain', '5', '7ee46db77d1b98b145c9a95444d8dc67', '2009-07-14 16:08:46');
The query I'm now running is:
SELECT * FROM `uploads` WHERE MATCH(name) AGAINST ('header' IN BOOLEAN MODE)
Which should return row 3, header_bg2.png. Instead I get another empty result set. My options for boolean searching are below:
mysql> show variables like 'ft_%';
+--------------------------+----------------+
| Variable_name | Value |
+--------------------------+----------------+
| ft_boolean_syntax | + -><()~*:""&| |
| ft_max_word_len | 84 |
| ft_min_word_len | 4 |
| ft_query_expansion_limit | 20 |
| ft_stopword_file | (built-in) |
+--------------------------+----------------+
5 rows in set (0.02 sec)
"header" is within the word length restrictions and I doubt it's a stop word (I'm not sure how to get the list). Any ideas?
