INSERT INTO t_dept_question(question_id, dept_id) VALUES (#{item.questionId}, #{item.deptId}) DELETE FROM t_dept_question WHERE question_id = #{questionId} SELECT tdq.dept_id, td.name as deptName FROM t_dept_question tdq INNER JOIN t_department td ON td.id = tdq.dept_id WHERE tdq.question_id = #{questionId}