mysql 多个或不喜欢

我有一个 wordpress 插件，它本质上创建一个 mysql 查询并将结果返回到 wordpress。

它是用户驱动的，因此最终可能会出现带有多个 NOT LIKE 的大型查询，从而导致查询非常慢。

我可以用来改进的任何建议：

SELECT field1,field2,field3,field4 
from datatable 
WHERE (title NOT LIKE '%word%' AND title NOT LIKE '%word2%'
AND title NOT LIKE '%word3%' AND title NOT LIKE '%word4%' 
AND title NOT LIKE '%word5%' AND title NOT LIKE '%word6%' 
AND title NOT LIKE '%word7%' AND title NOT LIKE '%word8%' 
AND title NOT LIKE '%word9%') 
AND MATCH (title) AGAINST ("\"brandname\" " IN BOOLEAN MODE) 
ORDER BY total ASC LIMIT 0,60

客户向 WordPress 插件添加了大量否定关键字，这导致查询量比上面的查询量更大。

这最容易完成REGEXP http://dev.mysql.com/doc/refman/5.1/en/regexp.html。对于多个单词，请使用类似的组(one|two|three)

SELECT 
  field1,
  field2,
  field3,
  field4
from datatable
WHERE 
  title NOT REGEXP '(word1|word2|word3|word4|word5...|word9)'
  AND MATCH (title) AGAINST ("\"brandname\" " IN BOOLEAN MODE)
ORDER BY total ASC
LIMIT 0,60