MySQL 8中使用全文检索示例

首先建议张册测试用的表test,并使用fulltext说明将titlebody两列的数据加入全文检索的索引列中:

drop table if exists test;
create table test (
    id integer not null primary key auto_increment,
    title varchar(50),
    body longtext,
    fulltext(title, body) with parser ngram
);

然后往其中插入数据:

insert into test (title, body) values 
('金缕衣', '劝君莫惜金缕衣,劝君惜取少年时。花开堪折直须折,莫待无花空折枝。'),
('送别', '山中相送罢,日暮掩柴扉。春草明年绿,王孙归不归。'),
('春晓', '春眠不觉晓,处处闻啼鸟。夜来风雨声,花落知多少。'),
('江雪', '千山鸟飞绝,万径人踪灭。孤舟蓑笠翁,独钓寒江雪。'),
('何满子', '故国三千里,深宫二十年。一声何满子,双泪落君前。');

然后我们可以执行如下语句来查询“山”这个字:

select * from test where match(title, body) against ('金缕衣' in natural language mode);

结果如下:

mysql> select * from test where match(title, body) against ('金缕衣' in natural language mode);
+----+-----------+--------------------------------------------------------------------------------------------------+
| id | title     | body                                                                                             |
+----+-----------+--------------------------------------------------------------------------------------------------+
|  1 | 金缕衣    | 劝君莫惜金缕衣,劝君惜取少年时。花开堪折直须折,莫待无花空折枝。                                 |
+----+-----------+--------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

或者我们可以用bool模式查看即包含“三千”又包含“二十”的数据:

select * from articles where match(title, body) against ('+三千 +二十' in boolean mode);

结果如下:

mysql> select * from test where match(title, body) against ('+三千 +二十' in boolean mode);
+----+-----------+--------------------------------------------------------------------------+
| id | title     | body                                                                     |
+----+-----------+--------------------------------------------------------------------------+
|  5 | 何满子    | 故国三千里,深宫二十年。一声何满子,双泪落君前。                         |
+----+-----------+--------------------------------------------------------------------------+
1 row in set (0.00 sec)

更多信息请参考这篇博客,写的非常好!:https://www.jianshu.com/p/645402711dac

posted @ 2019-02-01 12:21  zifeiy  阅读(747)  评论(0编辑  收藏  举报