学生管理系统。输入学生学号，姓名。
提供查询，增加，删除，修改。功能差不多。一般的功能都有。不久前，做的实验。-Student management system. Students enter its name. Provide query, add, delete, modify. Function almost. General function. Not long ago, to do experiments.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001407s ]
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:0.093084s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001263s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001963s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001288s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003720s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001122s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003390s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.017279s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001499s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 193774 [ RunTime:0.001442s ]
