网店过滤器返回的行不正确

Question

我有一个名为 products 的表格，其中包含 ID、NAME、URL、BRAND 字段 然后我有一个名为 product_filter 的字段，字段 ID、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 |秋天
5 | 2 |季节 |秋天
5 | 1 |季节 |全部

等等等等

现在当客户在网页上并尝试过滤时

材质：羊毛、棉 季节：秋天

我的结果是产品 1（有材料和正确的季节）和产品 2（有 1 材料和正确的季节）。

我尝试了加入这个方法

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    

我使用 Distinct 来取回 1 个 oer 产品（因为产品 1 具有两种材料）。

但是在我改变之前我没有得到任何结果

( (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')    

到

( (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秋季的产品。 如果有人有建议，那么请提出想法...

Answer 1

您需要多次匹配过滤器表，以检查每个过滤器。最简单的可能是进行多个连接。

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