Select Duplicate SKUs from WooCommerce Database #woocommerce #mysql

woocommerce-duplicate-skus.sql

# SELECT any post_status
SELECT meta_value,COUNT(meta_value),GROUP_CONCAT(DISTINCT post_id ORDER BY post_id SEPARATOR ',') post_id
FROM wp_postmeta
WHERE meta_key = '_sku'
AND meta_value != ''
GROUP BY meta_value HAVING COUNT(meta_value) > 1

# SELECT only from products that are already published or in draft
SELECT meta_value,COUNT(meta_value),GROUP_CONCAT(DISTINCT post_id ORDER BY post_id SEPARATOR ',') post_id
FROM wp_postmeta
WHERE meta_key = '_sku'
AND meta_value != ''
AND post_id IN (SELECT ID FROM wp_posts WHERE post_status IN('draft', 'publish'))
GROUP BY meta_value HAVING COUNT(meta_value) > 1;

wp_postmeta might contain orphan postmeta values from deleted records in wp_posts