我正在尝试将特定类别中某些产品的价格提高一定百分比.我想出了应该起作用的选择语句,但是在将其与更新语句组合时遇到了麻烦.这是我所拥有的：

SELECT * from `wp_term_relationships` where term_taxonomy_id=376 and object_id in(select ID from `wp_posts` where `post_type`='product' and     post_status='publish' and ID=wp_term_relationships.object_id) 

这给了我所需的产品.我可以在这些产品上运行UPDATE(如下所示),还是需要以某种方式组合它们？

update wp_postmeta set meta_value = meta_value * 1.40 where meta_key='_regular_price'

解决方法:

这是一个MySQL查询,可以满足您的目的.

更新_regular_price

UPDATE 
    `wp_postmeta` 
SET 
    `meta_value` = ROUND(`meta_value` * 1.40, 2) 
WHERE 
    meta_key = '_regular_price' 
    AND `post_id` IN (
        SELECT 
            `object_id` AS product_id 
        FROM 
            `wp_term_relationships` 
        WHERE 
            term_taxonomy_id = 376
            AND `object_id` IN (
                SELECT 
                    `ID` 
                FROM 
                    `wp_posts` 
                WHERE 
                    `post_type` = 'product' 
                    AND `post_status` = 'publish' 
                    AND `ID` = `object_id`
            )
    );

更新_price

UPDATE 
    `wp_postmeta` 
SET 
    `meta_value` = ROUND(`meta_value` * 1.40, 2) 
WHERE 
    meta_key = '_price' 
    AND `post_id` IN (
        SELECT 
            `object_id` AS product_id 
        FROM 
            `wp_term_relationships` 
        WHERE 
            term_taxonomy_id = 376
            AND `object_id` IN (
                SELECT 
                    `ID` 
                FROM 
                    `wp_posts` 
                WHERE 
                    `post_type` = 'product' 
                    AND `post_status` = 'publish' 
                    AND `ID` = `object_id`
            )
    );

另外,您还必须删除存储在option_name中_transient_timeout_wc_var_prices _ {{post_id}}和_transient_wc_var_prices _ {{post_id}}下的wp_options表中的WooCommerce产品价格缓存.

DELETE
FROM `wp_options`
WHERE (`option_name` LIKE '_transient_wc_var_prices_%'
    OR `option_name` LIKE '_transient_timeout_wc_var_prices_%')

以上查询已为我测试并工作.

在运行此查询之前,请先进行数据库备份

希望这可以帮助！