Where is the post featured image link stored in the WordPress database?

Question

Where is the featured image link stored in the WordPress Database? I searched in the wp_postmeta table but I cannot find out the exact post_id and

Answer 1

here my sql with full url image

SELECT concat((select option_value from wp_options where option_name ='siteurl'  limit 1),'/wp-content/uploads/',childmeta.meta_value)
FROM wp_postmeta childmeta 
INNER JOIN wp_postmeta parentmeta ON (childmeta.post_id=parentmeta.meta_value)
WHERE parentmeta.meta_key='_thumbnail_id' and childmeta.meta_key = '_wp_attached_file'
AND parentmeta.post_id = POST_ID ;

select option_name from wp_options where option_name ='siteurl' 

the result will be like this

http://yourdomain/blog-wp/wp-content/uploads/2015/04/IMG_06062014_155904.png