学生管理系统，可以任意添加学生，删除学生，编辑学生信息，并且具有保存和读入学生信息的功能。-student management system that can add new students, students delete, edit student information. and preservation and read into the student information functions.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001217s ]
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:0.088403s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001166s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001919s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001175s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003609s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001008s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003203s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015639s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001393s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 154031 [ RunTime:0.001355s ]
