select answer_id, qu_id, is_right, image, content,contentIn, score_rate,attribute,sort from exam_question_answer and qu_id = #{quId} ORDER BY sort ASC select url from exam_question_file where qu_id =#{quId} and file_type ='2' SELECT SUM(score_rate) AS totalKeyScore FROM exam_question_answer WHERE qu_id =#{quId}; select score_rate from exam_question_answer where answer_id =#{answerId} select id,qu_id,parent_id,key_name,key_value,rate,type from exam_ps_keyword where qu_id=#{quId} and type='1' order by sort asc