磁盘的最优存储问题！ 计算最优存储时间是改进了一下，把时间降到nlogn!如果不改进的话是n的平方啊！-the optimal disk storage problem! We calculate optimal storage time is to improve a bit down finite time! If no improvement is the square of n ah!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002050s ]
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:0.091506s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002453s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003307s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002349s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003666s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002086s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003282s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015543s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002609s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 159357 [ RunTime:0.001333s ]
