编写程序，实现成绩的查询和排序。具体要求为：
① 选择合适的布局管理设计美观的界面，包含成绩输入、成绩查询、成绩排序功能。
② 成绩输入：从界面上输入学生的学号和成绩，点击“确认”按钮进行保存。
③ 成绩查询：输入学生的学号，点击“查询”按钮，显示该学生成绩。
④ 成绩排序：点击“排序”按钮，将按成绩从高到低显示学生的学号和成绩。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001158s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.069721s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001013s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001227s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001095s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003201s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000817s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003844s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016073s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001129s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 479303 [ RunTime:0.017005s ]
