多项式相加减乘的程序,还可以，大家可以参照一下,还请多指教.-The program of polynomial addition,subtration and multiplication, just so so, everyone can use it as a reference, please issue your idea on it.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002117s ]
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:0.095632s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002368s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002103s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002356s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003671s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002036s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003302s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015288s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002442s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 294385 [ RunTime:0.001455s ]
