Stringsql="select rd.* from fc_review_doubtful rd, fc_review r where rd.review_id = r.id and r.film_id = ?";
Stringsql="select rd.*, r.film_id, u.username, ug.group_name from fc_review_doubtful rd left join fc_user u on u.uid = rd.user_id left join fc_user_group ug on ug.group_id = u.group_id, fc_review r where rd.review_id = r.id and r.film_id = ?";