数学建模的经验之谈，对准备参赛及已经参赛的队员有一定的指导意义。对参加工作的科研人员也有一定借鉴作用。-Mathematical Modeling of experiences, the preparation team and have team members have a certain significance. For participating in the work of researchers also have some reference.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001460s ]
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:0.092296s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001251s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001984s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001247s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004910s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001100s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003255s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015048s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001324s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 209982 [ RunTime:0.001273s ]
