mysql全文索引: why result of match against is not as good as result of like?

Question

1. 我已经创建了mysql的索引和全文索引，后端存储引擎是MyISAM。
   mysql> show index from play_movie;<br/> +------------+------------+---------------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+<br/> | Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment |<br/> +------------+------------+---------------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+<br/> | play_movie | 0 | PRIMARY | 1 | id | A | 42782 | NULL | NULL | | BTREE | |<br/> | play_movie | 0 | name | 1 | name | A | 42782 | NULL | NULL | | BTREE | |<br/> | play_movie | 1 | play_movie_ec9d726c | 1 | describe | A | 1944 | 333 | NULL | | BTREE | |<br/> | play_movie | 1 | name_2 | 1 | name | NULL | 42782 | NULL | NULL | | FULLTEXT | |<br/> +------------+------------+---------------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+<br/>
2. > 对战结果。
   mysql> select name from play_movie where match(name) against ('约会规则'); +------------------------+<br/> | name |<br/> +------------------------+<br/> | 约会规则 第二季 |<br/> | 约会规则 第一季 |<br/> +------------------------+<br/> 2 rows in set (0.00 sec)<br/>
3. > 喜欢的结果。
   mysql> select name from play_movie where name like '%约会规则%';<br/> +------------------------------------+<br/> | name |<br/> +------------------------------------+<br/> | 恋爱法则/约会规则第四季 |<br/> | 约会规则 第一季 |<br/> | 约会规则 第二季 |<br/> | 约会规则第三季 |<br/> | 约会规则第六季 |<br/> +------------------------------------+<br/> 5 rows in set (0.04 sec)<br/>
4. > 上面2个select的解释。
   mysql> explain select name from play_movie where match(name) against ('约会规则');<br/> +----+-------------+------------+----------+---------------+--------+---------+------+------+-------------+<br/> | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |<br/> +----+-------------+------------+----------+---------------+--------+---------+------+------+-------------+<br/> | 1 | SIMPLE | play_movie | fulltext | name_2 | name_2 | 0 | | 1 | Using where |<br/> +----+-------------+------------+----------+---------------+--------+---------+------+------+-------------+<br/> <br/> mysql> explain select name from play_movie where name like '%约会规则%';<br/> +----+-------------+------------+-------+---------------+------+---------+------+-------+--------------------------+<br/> | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |<br/> +----+-------------+------------+-------+---------------+------+---------+------+-------+--------------------------+<br/> | 1 | SIMPLE | play_movie | index | NULL | name | 767 | NULL | 42782 | Using where; Using index |<br/> +----+-------------+------------+-------+---------------+------+---------+------+-------+--------------------------+<br/>
5. > 喜欢使用 0.04 秒来查找结果，匹配使用 0.00 秒来查找结果，但喜欢找到比匹配更好的结果。
6. > 对战结果，结果为约会规则第一季，落选结果为约会规则第六季，关键字为约会规则。似乎全文索引没有将约会规则第六季拆分为约会规则和第六季。
   我如何配置 mysql 或全文索引来解决这个问题？以上文字为中文，默认字符集为utf8。

Answer 1

在您的匹配 查询中，您正在寻找包含确切 单词约会规则的行。但是，在 like 查询中，您要查找包含单词约会规则 anywhere 的行，包括其他单词。您可以在 boolean mode 中使用全文搜索，它允许您使用星号作为通配符:

SELECT name FROM play_movie WHERE MATCH(name) 
AGAINST ('约会规则*' IN BOOLEAN MODE);