求函数极小值，适用于不带约束的、函数可以为非线性的无约束规划问题的求解-Demand function is minimum applicable to non-binding, the function can be non-binding for the non-linear programming problem solving
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.010582s ]
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:0.084447s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000877s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001152s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000988s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003295s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001148s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003799s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014672s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001121s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 156969 [ RunTime:0.025491s ]
