北大ACM试题poj 第3057题源码，很好的代码，希望对搞ACM的同学有帮助
-Peking University ACM Chapter 3057 question Question poj source code, good code, and want to help students engage in ACM
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002714s ]
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:0.139200s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002950s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003187s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002757s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005742s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002415s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004996s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024455s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.003288s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 184910 [ RunTime:0.001397s ]
