非线性方程组不能用消去和分解法进行求解，jacabi迭代和高斯迭代是最常用的两种迭代方法-Nonlinear equations can not be eliminated and the decomposition method to solve, jacabi iteration and Gauss iteration is the most commonly used two types of iterative methods
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001422s ]
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:0.108408s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001649s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002196s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001514s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003694s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001205s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003240s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015630s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001412s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 227745 [ RunTime:0.002373s ]
