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我在Woocommerce中有重复的订单,我想删除它们只保留独特的清洁簿记.
我不擅长SQL,我写了这个请求但是当有重复时它列出了两个重复.
SELECT *
FROM `wp_posts`
WHERE post_type = 'shop_order' AND post_status = 'wc-completed'
GROUP BY post_date
HAVING count(*) > 1
ORDER BY `wp_posts`.`post_date` DESC
这给了我307个结果.
如何编写删除重复项的正确请求并仅保留唯一订单？
样本数据：
ID post_author post_date post_date_gmt post_content post_title post_excerpt post_status comment_status ping_status post_password post_name to_ping pinged post_modified post_modified_gmt post_content_filtered post_parent guid menu_order post_type post_mime_type comment_count
22282 227 2018-02-04 01:00:00 2018-02-04 00:00:00 Order – February 4,2018 @ 01:00 AM wc-completed open closed order-4-02-18-6 2018-03-19 17:12:32 2018-03-19 16:12:32 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 2
22277 0 2018-01-29 01:00:00 2018-01-29 00:00:00 Order – January 29,2018 @ 01:00 AM wc-completed open closed order-29-01-18-2 2018-03-19 17:12:33 2018-03-19 16:12:33 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 2
22276 0 2018-01-28 01:00:00 2018-01-28 00:00:00 Order – January 28,2018 @ 01:00 AM wc-completed open closed order-28-01-18-2 2018-03-19 17:12:33 2018-03-19 16:12:33 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 2
22275 0 2018-01-25 01:00:00 2018-01-25 00:00:00 Order – January 25,2018 @ 01:00 AM wc-completed open closed order-25-01-18-2 2018-03-19 17:12:33 2018-03-19 16:12:33 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 2
22232 154 2018-01-24 00:00:00 2018-01-24 00:00:00 Order – January 24,2018 @ 12:00 AM wc-completed open closed order-24-01-18-4 2018-01-24 00:00:00 2018-01-24 00:00:00 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 0
22230 213 2018-01-23 00:00:00 2018-01-23 00:00:00 Order – January 23,2018 @ 12:00 AM wc-completed open closed order-23-01-18-2 2018-01-23 00:00:00 2018-01-23 00:00:00 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 0
22229 0 2018-01-22 00:00:00 2018-01-22 00:00:00 Order – January 22,2018 @ 12:00 AM wc-completed open closed order-22-01-18-2 2018-01-22 00:00:00 2018-01-22 00:00:00 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 0
22228 224 2018-01-20 00:00:00 2018-01-20 00:00:00 Order – January 20,2018 @ 12:00 AM wc-completed open closed order-20-01-18-2 2018-01-20 00:00:00 2018-01-20 00:00:00 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 0
22227 0 2018-01-19 00:00:00 2018-01-19 00:00:00 Order – January 19,2018 @ 12:00 AM wc-completed open closed order-19-01-18-2 2018-01-19 00:00:00 2018-01-19 00:00:00 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 0
22226 0 2018-01-17 00:00:00 2018-01-17 00:00:00 Order – January 17,2018 @ 12:00 AM wc-completed open closed order-17-01-18-2 2018-01-17 00:00:00 2018-01-17 00:00:00 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 0
22225 0 2018-01-16 00:00:00 2018-01-16 00:00:00 Order – January 16,2018 @ 12:00 AM wc-completed open closed order-16-01-18-2 2018-01-16 00:00:00 2018-01-16 00:00:00 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 0
22224 0 2018-01-15 00:00:00 2018-01-15 00:00:00 Order – January 15,2018 @ 12:00 AM wc-completed open closed order-15-01-18-4 2018-01-15 00:00:00 2018-01-15 00:00:00 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 0
22222 0 2018-01-14 00:00:00 2018-01-14 00:00:00 Order – January 14,2018 @ 12:00 AM wc-completed open closed order-14-01-18-6 2018-01-14 00:00:00 2018-01-14 00:00:00 0 https://www.hemen-biarritz.com/?post_type=shop_ord... 0 shop_order 0
编辑：
SELECT DISTINCT post_date FROM `wp_posts` WHERE post_type = 'shop_order' AND post_status = 'wc-completed'
给了我614个结果,这是前一个请求的两倍.
WordPress：5.0
Woocommerce：3.5.2
最佳答案
首先,如果您不知道,woocommerce订单数据位于四(4)个表中：
> wp_posts
> wp_postmeta
> wp_woocommerce_order_items
> wp_woocommerce_order_itemmeta
所以下面的钩子函数使用WPDB类和方法.它会：
>在一个查询中获取所有重复的订单ID(最低ID)(搜索通常唯一的重复订单密钥)
>在一个查询中删除所有重复查询的订单.
但请务必始终先进行数据库备份.
代码可以在任何前端页面加载中一次性完成工作(在使用后删除)：
add_action( 'template_redirect','progressive_delete_duplicated_orders' );
function progressive_delete_duplicated_orders() {
global $wpdb;
// Get duplicated orders (smaller ID)
$duplicated_orders = (array) $wpdb->get_col("
SELECT p.ID,pm.meta_value,COUNT(*) as c
FROM {$wpdb->prefix}postmeta as pm
INNER JOIN {$wpdb->prefix}posts as p ON p.ID = pm.post_id
WHERE p.post_status = 'wc-completed'
AND pm.meta_key = '_order_key'
GROUP BY pm.meta_value
HAVING c > 1
");
if( sizeof($duplicated_orders) == 1 )
$where_clause = 'WHERE p.ID = ' . reset($duplicated_orders);
elseif( sizeof($duplicated_orders) > 1 )
$where_clause = 'WHERE p.ID IN (' . implode( ',',$duplicated_orders ) . ')';
else return; // Exit
// Delete duplicated Orders data everywhere
$wpdb->query("
DELETE p,pm,woi,woim
FROM {$wpdb->prefix}posts as p
INNER JOIN {$wpdb->prefix}postmeta as pm ON p.ID = pm.post_id
INNER JOIN {$wpdb->prefix}woocommerce_order_items as woi ON p.ID = woi.order_id
INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS woim ON woi.order_item_id = woim.order_item_id
$where_clause
");
}
代码位于活动子主题(或活动主题)的function.php文件中.经过测试和工作.
The duplicated orders will be removed on first frontend page load. So after that you can remove or comment the code.
（编辑：李大同）
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