select * from role_user INSERT INTO role_user (role_id, user_id, create_by, create_time, update_by, update_time, invalid) VALUES(#{roleId}, #{userId}, #{createBy}, #{createTime}, #{updateBy}, #{updateTime}, #{invalid}) UPDATE role_user role_id = #{roleId}, user_id = #{userId}, create_by = #{createBy}, create_time = #{createTime}, update_by = #{updateBy}, update_time = #{updateTime}, update_by = #{updateBy}, invalid = #{invalid} WHERE id = #{id}; delete from role_user where id = #{id} select * from role_user where id = #{id} select * from role_user where role_id = #{roleId}