Webshop过滤器返回的行不正确

Question

我有一个名为product的表，其字段ID为NAME，URL，BRAND，然后有一个名为product_filter的字段，其ID为PRODUCT_ID，TYPE，VALUE

假设我有以下产品表

1 | 产品1 | 产品1 | 品牌1
2 | 产品2 | 产品2 | 品牌2
3 | 产品3 | 产品3 | 品牌1

和product_filter表

1 | 1 | 材料 羊毛
2 | 1 | 材料 棉
3 | 2 | 材料 棉
4 | 3 | 材料 羊毛
5 | 1 | 季节 秋季
5 | 2 | 季节 秋季
5 | 1 | 季节 所有

等

现在，当客户在网页上并尝试进行过滤时

物料：羊毛，棉季节：秋季

我的结果是产品1（既有物料又有正确的季节）和产品2（有1物料又有正确的季节）。

我尝试了加入

SELECT DISTINCT(shop_product.product_number), `shop_product`.`color_count`, `shop_product`.`category_id`, `shop_product`.`in_stock`, `shop_product`.`url_image`, `shop_product_description`.* FROM (`shop_product`) JOIN `shop_product_description` ON `shop_product`.`id` = `shop_product_description`.`product_id` JOIN `shop_category_description` ON `shop_product`.`category_id` = `shop_category_description`.`category_id` INNER JOIN `shop_filters` ON `shop_product`.`id` = `shop_filters`.`product_id` WHERE `shop_product`.`status` = 1 AND `shop_product_description`.`language_id` = '1' AND `shop_category_description`.`language_id` = '1' AND ( (shop_filters.type = '1' AND shop_filters.keyword = 'cotton') OR (shop_filters.type = '1' AND shop_filters.keyword = 'wool') ) AND (shop_filters.type = '2' AND shop_filters.keyword = 'fall') ORDER BY shop_product`.`url_image` asc, `shop_product_description`.`name` desc LIMIT 36    

我用Distinct取回了1个以上的产品（因为产品1具有两种材料）。

但是直到改变我都没有结果

( (shop_filters.type = '1' AND shop_filters.keyword = 'cotton') OR (shop_filters.type = '1' AND shop_filters.keyword = 'wool') ) AND (shop_filters.type = '2' AND shop_filters.keyword = 'fall')    

至

( (shop_filters.type = '1' AND shop_filters.keyword = 'cotton') OR (shop_filters.type = '1' AND shop_filters.keyword = 'wool') ) OR (shop_filters.type = '2' AND shop_filters.keyword = 'fall')    

但是，我的结果是棉或羊毛或跌落的产品。 如果有人提出建议，那么请...

Answer 1

您需要根据过滤器表多次匹配，以检查每个过滤器。 最简单的可能是进行多个联接。

SELECT DISTINCT(shop_product.product_number), shop_product.color_count, shop_product.category_id, shop_product.in_stock, shop_product.url_image, shop_product_description.* 
FROM (shop_product) 
JOIN shop_product_description ON shop_product.id = shop_product_description.product_id 
JOIN shop_category_description ON shop_product.category_id = shop_category_description.category_id 
INNER JOIN shop_filters sf1 ON shop_product.id = sf1.product_id 
INNER JOIN shop_filters sf2 ON shop_product.id = sf2.product_id 
WHERE shop_product.status = 1 AND shop_product_description.language_id = '1' 
AND shop_category_description.language_id = '1' 
AND ( (sf1.type = '1' AND shop_filters.sf1 = 'cotton') OR (sf1.type = '1' AND sf1.keyword = 'wool') ) 
AND (sf2.type = '2' AND sf2.keyword = 'fall') 
ORDER BY shop_product.url_image asc, shop_product_description.name desc LIMIT 36