a.id AS "id", a.paper_id AS "paper.id", a.question_id AS "question.id" LEFT JOIN edu_paper b ON b.id = a.paper_id INSERT INTO edu_paper_detail( id, paper_id, question_id ) VALUES ( #{id}, #{paper.id}, #{question.id} ) UPDATE edu_paper_detail SET paper_id = #{paper.id}, question_id = #{question.id} WHERE id = #{id} DELETE FROM edu_paper_detail WHERE id = #{id} WHERE paper_id = #{paper.id} UPDATE edu_paper_detail SET del_flag = #{DEL_FLAG_DELETE} WHERE id = #{id} WHERE paper_id = #{paper.id}