Question

我需要从客户端erp数据库中提取wordpress / woocommerce定价。我有一个wordpress（woocommerce）数据库，其中包含在线销售产品的定价。 wordpress MySQL数据库将价格存储在元表中：wp_database.wp_postmeta.meta_key =＆＃34; _price＆＃34; wp_database.wp_postmeta.meta_value = 1.99。

我有数千种产品，我需要每天从不同的MySQL数据库更新所有产品：erp_database.part.new_price

唯一ID是：erp_database.part.ID，在wordpress db中，它的wp_database.wp_postmeta.meta_key =＆＃34; _sku＆＃34;

这可以在一个查询中完成吗？

这里的wp_database样本数据看起来像（但是1000条记录和几十个密钥）：

以下是erp_database的样子：

这已经接近但我认为第一个WHERE子句应该是IN而不是SELECT。有谁知道怎么做？

UPDATE `wp_database`.wm_postmeta AS existing,
 erp_database.part AS newpricing
SET existing.pm_postmeta.meta_value =(
    SELECT
        newpricing.new_price
    FROM
        newpricing
    WHERE
        newpricing.ID =(
            SELECT
                existing.meta_value
            WHERE
                existing.meta_key = "_sku"
        )
)

接近？

UPDATE `wp_database`.wm_postmeta AS existing,
 erp_database.part AS newpricing
SET existing.pm_postmeta.meta_value =(
    SELECT
        newpricing.NEW_PRICE
    FROM
        newpricing
    WHERE
        newpricing.ID =(
            SELECT
                existing.meta_value,
                existing.meta_value as newprice

            WHERE
                existing.meta_key = "_sku" and existing.post_id = newprice.post_id
        )
)

Answer 1

好的，我自己拿到了!!!!对于那些必须从列表，电子表格或外部ERP数据库更新整个woocommerce商店的所有其他人，这里是它的主旨：

UPDATE pm_postmeta as t,
(
SELECT
a.meta_key AS id_key,
a.meta_value AS id_value,
b.meta_key AS price_key,
b.meta_value AS price_value,
a.meta_id,
a.post_id,
erp_database.part.ID,
erp_database.part.price AS "Price"
FROM
`wp_database`.pm_postmeta AS a
INNER JOIN `wp_database`.pm_postmeta AS b ON a.post_id = b.post_id
INNER JOIN erp_database.part ON a.meta_value LIKE concat("%",erp_database.part.ID,"%")
WHERE
a.meta_key = "_sku" AND
b.meta_key = "_price" 

ORDER BY
b.post_id ASC
limit 100 ) as thetemp
SET meta_value = thetemp.`Price` WHERE meta_key="_price" and t.post_id = thetemp.post_id

当然众所周知，还有几个地方需要更新价格，并删除缓存......

来自远程数据库的

1 个答案: