用幂法求矩阵的特征值，求出来的是矩阵最大的特征和对应的特征向量。-method for using the power of the matrix eigenvalue, seeking the Matrix is the biggest character and the corresponding eigenvector.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.038086s ]
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:0.101565s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001129s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001214s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001121s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003238s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000889s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003753s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014764s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001126s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 154859 [ RunTime:0.012435s ]
