MySQL全文搜索部分单词

Question

MySQL全文搜索看起来很棒,是在SQL中搜索的最佳方式.但是,我似乎坚持不会搜索部分单词这一事实.例如,如果我有一篇名为"MySQL Tutorial"的文章并搜索"MySQL",它将无法找到它.

做了一些搜索后,我发现了对MySQL 4中支持的各种引用(我使用的是5.1.40).我尝试过使用" MySQL "和"%MySQL%",但都不起作用(我发现一个链接表明它是星星,但你只能在结束时或开头不是两个都这样做).

这是我的表结构和我的查询,如果有人可以告诉我哪里出错我会很棒.我假设部分单词匹配是以某种方式构建的.

CREATE TABLE IF NOT EXISTS `articles` (
  `article_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
  `article_name` varchar(64) NOT NULL,
  `article_desc` text NOT NULL,
  `article_link` varchar(128) NOT NULL,
  `article_hits` int(11) NOT NULL,
  `article_user_hits` int(7) unsigned NOT NULL DEFAULT '0',
  `article_guest_hits` int(10) unsigned NOT NULL DEFAULT '0',
  `article_rating` decimal(4,2) NOT NULL DEFAULT '0.00',
  `article_site_id` smallint(5) unsigned NOT NULL DEFAULT '0',
  `article_time_added` int(10) unsigned NOT NULL,
  `article_discussion_id` smallint(5) unsigned NOT NULL DEFAULT '0',
  `article_source_type` varchar(12) NOT NULL,
  `article_source_value` varchar(12) NOT NULL,
  PRIMARY KEY (`article_id`),
  FULLTEXT KEY `article_name` (`article_name`,`article_desc`,`article_link`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=7 ;

INSERT INTO `articles` VALUES
(1, 'MySQL Tutorial', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 6, 3, 1, '1.50', 1, 1269702050, 1, '0', '0'),
(2, 'How To Use MySQL Well', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 1, 2, 0, '3.00', 1, 1269702050, 1, '0', '0'),
(3, 'Optimizing MySQL', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 0, 1, 0, '3.00', 1, 1269702050, 1, '0', '0'),
(4, '1001 MySQL Tricks', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 0, 1, 0, '3.00', 1, 1269702050, 1, '0', '0'),
(5, 'MySQL vs. YourSQL', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 0, 2, 0, '3.00', 1, 1269702050, 1, '0', '0'),
(6, 'MySQL Security', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 0, 2, 0, '3.00', 1, 1269702050, 1, '0', '0');

SELECT count(a.article_id) FROM articles a

            WHERE MATCH (a.article_name, a.article_desc, a.article_link) AGAINST ('mysql')
            GROUP BY a.article_id
            ORDER BY a.article_time_added ASC

使用前缀,因为它来自有时添加其他连接的函数.

正如您所看到的,搜索MySQL应该返回6,但不幸的是它没有.

更新

没有结果返回,因为每一行都匹配.

http://dev.mysql.com/doc/refman/5.1/en/fulltext-natural-language.html

"搜索结果是空的,因为"MySQL"这个词出现在至少50%的行中.因此,它被有效地视为一个停用词.对于大型数据集,这是最理想的行为:自然语言查询不应该从1GB表中返回每一行.对于小数据集,它可能不太理想."

Answer 1

我的理解是MySQL FULLTEXT索引仅支持搜索前缀(MATCH (a.article_name) AGAINST ('MySQL*' IN BOOLEAN MODE)).

Answer 2

引自MySQL手册:"搜索结果为空,因为"MySQL"这个词至少存在于50%的行中." http://dev.mysql.com/doc/refman/5.0/en/fulltext-natural-language.html