id, subject_id,question_id,deleted delete from t_question_subject where id in #{id} delete from t_question_subject where question_id = #{questionId} select qs.*,s.name as subName from t_question_subject qs left join t_subject s on qs.subject_id = s.id where question_id = #{id} and qs.deleted = 0 and s.deleted = 0 insert into t_question_subject(id,subject_id,question_id,deleted) values (#{item.id},#{item.subjectId},#{item.questionId},#{item.deleted})