MySQL全文搜索,为什么我得到错误的MATCH参数

Question

SELECT 
* 
FROM 
company c
INNER JOIN 
city ci ON ci.city_id = c.city_id
INNER JOIN 
state s ON s.state_id = c.state_id
WHERE 
MATCH (
c.name, ci.name, c.zipcode, s.name
)
AGAINST (
'los angeles'
)

Answer 1

所有列MATCH (...)必须来自同一个表,因为它们必须是全文索引的,并且MySQL无法为多个表中的数据创建一个索引.

Answer 2

我遇到了同样的问题并解决了这个问题:

SELECT 
* 
FROM 
company c
INNER JOIN 
city ci ON ci.city_id = c.city_id
INNER JOIN 
state s ON s.state_id = c.state_id
WHERE 
   MATCH (c.name) AGAINST ('los angeles')
OR MATCH (ci.name) AGAINST ('los angeles')
OR MATCH (c.zipcode) AGAINST ('los angeles')
OR MATCH (s.name) AGAINST ('los angeles')

但正如我所见,您正在搜索"名称"和"邮政编码"等简单字段.至于我,最好使用LIKE它们并将它们连接起来

SELECT 
* 
FROM 
company c
INNER JOIN 
city ci ON ci.city_id = c.city_id
INNER JOIN 
state s ON s.state_id = c.state_id
WHERE 
CONCAT_WS (' ', c.name, ci.name, c.zipcode, s.name)
LIKE ('%los angeles%')