PHP PDO 全文，受相关分数限制

Question

类似于Limit to only relevant results - MYSQL我需要通过他们的分数来限制返回的结果，例如3。

这是我的查询，但它在 atm 上不起作用:

$STH = $DBH->prepare('SELECT 
                        id
                        , MATCH (title,edition) AGAINST (:query) AS score
                        , 3 as score 
                      FROM hb_articles 
                      WHERE MATCH(title,edition) AGAINST(:query IN BOOLEAN MODE) 
                      order by score desc');

Answer 1

您正在将别名 score 重新定义为常量 3。

将查询重写为:

SELECT  
  id 
  , MATCH (title,edition) AGAINST (:query IN BOOLEAN MODE) AS score 
FROM hb_articles  
WHERE MATCH(title,edition) AGAINST(:query IN BOOLEAN MODE)  
HAVING score <= 3   //or >= 3 I always forget how match against works.
ORDER BY score DESC');