给出了利用svd求解方程组的代码，结果的有效性在主函数中得到验证-Given the use of SVD for solving equations of the code, the validity of the results in the main function has been verified
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001301s ]
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:0.107773s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001795s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003209s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001859s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005532s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001348s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005365s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.021548s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001554s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 196053 [ RunTime:0.001624s ]
