Question

我正在尝试跨多个产品表进行全文搜索；例如制造商名称，产品型号名称，产品类别名称等。

我正在使用MariaDB 10.3，已在所有相应的* .name列上启用了全文，并且我正在使用innodb引擎

SELECT f.id AS family_id,
       f.name AS family_name,
       mr.id AS manufacturer_id,
       mr.name AS manufacturer_name,
       mm.id AS model_id,
       mm.name AS model_name,
       mm.year AS model_year
FROM   product_manufacturer mr 
    LEFT JOIN product_family f ON
       f.manufacturer_id=mr.id
    LEFT JOIN `product_model` mm ON
       f.id=mm.product_family_id
WHERE 
    MATCH (mr.name) AGAINST ('TestProduct'  IN NATURAL LANGUAGE MODE)

^^可行

但是，如果我要开始添加OR条件或开始在连接的列上进行搜索，我将收到整个数据集，就好像根本没有条件，如下面的2个查询所示

SELECT f.id AS family_id,
       f.name AS family_name,
       mr.id AS manufacturer_id,
       mr.name AS manufacturer_name,
       mm.id AS model_id,
       mm.name AS model_name,
       mm.year AS model_year
FROM product_manufacturer mr 
    LEFT JOIN product_family f ON
       f.manufacturer_id=mr.id
    LEFT JOIN `product_model` mm ON
       f.id=mm.product_family_id
WHERE
    MATCH (mr.name) AGAINST ('TestProduct'  IN NATURAL LANGUAGE MODE)

SELECT f.id as family_id,
       f.name as family_name,
       mr.id as manufacturer_id,
       mr.name as manufacturer_name,
       mm.id as model_id,
       mm.name as model_name,
       mm.year as model_year 
FROM product_manufacturer mr
   LEFT JOIN product_family f on
       f.manufacturer_id=mr.id
   LEFT JOIN `product_model` mm on
       f.id=mm.product_family_id
WHERE
   MATCH (mm.name) AGAINST ('TestProduct'  IN NATURAL LANGUAGE MODE)
OR MATCH (mr.name) AGAINST ('TestProduct'  IN NATURAL LANGUAGE MODE)

在全文搜索条件下如何执行左联接返回所有数据集？

0 个答案: