学生信息读系统（根据学生的学号从存储系统读取学生信息）： 姓名，学号，出生年月，学习年份，需要交的学费 科目代号，科目名称，科目平时成绩，科目考试成绩，科目总成绩-A system to manage student information, like name, student number, birth date, tuition fee, course name, course average score, and etc.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001197s ]
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:0.083688s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001023s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001266s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001140s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003377s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001112s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003694s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016941s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001171s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 107826 [ RunTime:0.013296s ]
