1).能够实现对班级学生基本信息的录入，包括学生的学号，姓名，性别，专业，民族以及出生年月等。 2).能够实现对学生基本信息的修改。 3).根据学号对学生信息进行查询。 4).能够删除某些学生的信息。-1)able to insert the basic information of students,including number,gender,major,nation and birthday.
2)able to modify basic information of students.
3)query student s information by his/her number.
4)delete information of certain students.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002451s ]
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:0.086157s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002539s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001996s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002493s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003790s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002317s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003308s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015645s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002614s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 301102 [ RunTime:0.001131s ]
