Liệt kê Phiếu giảm giá với chi tiết đơn hàng trong WooCommerce

Bên dưới truy vấn MySQL sẽ liệt kê tất cả phiếu giảm giá của bạn được liên kết với Đơn hàng.

SELECT pc.post_title AS coupon_name,
       pc.post_excerpt AS coupon_description,
       Max(CASE WHEN pmc.meta_key = 'discount_type'      AND  pc.`ID` = pmc.`post_id` THEN pmc.`meta_value` END) AS discount_type,
       Max(CASE WHEN pmc.meta_key = 'coupon_amount'      AND  pc.`ID` = pmc.`post_id` THEN pmc.`meta_value` END) AS coupon_amount,
       Max(CASE WHEN pmc.meta_key = 'product_ids'        AND  pc.`ID` = pmc.`post_id` THEN pmc.`meta_value` END) AS product_ids,
       Max(CASE WHEN pmc.meta_key = 'product_categories' AND  pc.`ID` = pmc.`post_id` THEN pmc.`meta_value` END) AS product_categories,
       Max(CASE WHEN pmc.meta_key = 'customer_email'     AND  pc.`ID` = pmc.`post_id` THEN pmc.`meta_value` END) AS customer_email,
       Max(CASE WHEN pmc.meta_key = 'usage_limit'        AND  pc.`ID` = pmc.`post_id` THEN pmc.`meta_value` END) AS usage_limit,
       Max(CASE WHEN pmc.meta_key = 'usage_count'        AND  pc.`ID` = pmc.`post_id` THEN pmc.`meta_value` END) AS total_usaged,
       po.ID AS order_id,
       MAX(CASE WHEN pmo.meta_key = '_billing_email'      AND po.ID = pmo.post_id THEN pmo.meta_value END) AS billing_email,
       MAX(CASE WHEN pmo.meta_key = '_billing_first_name' AND po.ID = pmo.post_id THEN pmo.meta_value END) AS billing_first_name,
       MAX(CASE WHEN pmo.meta_key = '_billing_last_name'  AND po.ID = pmo.post_id THEN pmo.meta_value END) AS billing_last_name,
       MAX(CASE WHEN pmo.meta_key = '_order_total'        AND po.ID = pmo.post_id THEN pmo.meta_value END) AS order_total
FROM `wp_posts` AS pc
INNER JOIN `wp_postmeta` AS pmc ON  pc.`ID` = pmc.`post_id`
INNER JOIN `wp_woocommerce_order_items` AS woi ON pc.post_title = woi.order_item_name
    AND woi.order_item_type = 'coupon'
INNER JOIN `wp_posts` AS po ON woi.order_id = po.ID
    AND po.post_type = 'shop_order'
    AND po.post_status IN ('wc-completed', 'wc-processing', 'wc-refunded') -- Added needed order status over here.
INNER JOIN `wp_postmeta` AS pmo ON po.ID = pmo.post_id
WHERE pc.post_type = 'shop_coupon'
GROUP BY po.ID
ORDER BY pc.ID DESC,
         po.ID DESC
LIMIT 0, 10 -- modify it accordingly.

Hy vọng điều này sẽ hữu ích!