hi i am experiencing the same problem, have installed this plugin but realized not for my purpose
how can i delete this completely as i tried the query but comes up with an error
[You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘\\\’_thumbnail_id\\\’ AND b.post_type = \\\’page\\\” at line 1]
DELETE a FROM wp_postmeta a INNER JOIN wp_posts b on a.post_id = b.ID WHERE a.meta_key = \\\’_thumbnail_id\\\’ AND b.post_type = \\\’page\\\’
