WordPress database error: [Unknown column 'attachment' in 'WHERE']
SELECT p.* FROM tsi_posts AS p WHERE p.post_date < '2016-06-02 13:23:56' AND p.post_type IN(attachment) AND p.post_status = 'publish' ORDER BY p.post_date DESC LIMIT 1

WordPress database error: [Unknown column 'attachment' in 'WHERE']
SELECT p.* FROM tsi_posts AS p WHERE p.post_date > '2016-06-02 13:23:56' AND p.post_type IN(attachment) AND p.post_status = 'publish' ORDER BY p.post_date ASC LIMIT 1