La siguiente consulta contiene algún error:
nSQL: SELECT ID, post_author, post_content, post_title, post_excerpt FROM wp_posts INNER JOIN wp_terms ON wp_terms.slug = "editorial" INNER JOIN wp_term_relationships ON wp_term_relationships.term_taxonomy_id = wp_terms.term_id WHERE ( wp_posts.ID = wp_term_relationships.object_id ) and ( wp_posts.post_status = "publish") ORDER BY wp_posts.post_date DESC LIMIT 1