string(249) "SELECT `meta_value` as company FROM `7jhhc_postmeta` WHERE `meta_key` = 'product_company' AND `post_id` IN (SELECT DISTINCT pm.`post_id`
FROM `7jhhc_postmeta` AS pm
WHERE pm.`meta_key` = 'product_certificate_post'
AND pm.`meta_key` !=''
);"