很我算法都会用到数据计算的问题，本程序可实现简单的数字计算（加减乘除等），对进行后面的复杂运算有一定的参考价值，-algorithm will use the data, The program can achieve Simple arithmetic (such as arithmetic), for the rest of the complex computing a certain reference value,
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.023003s ]
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:0.242843s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.033671s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002070s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.022211s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006208s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.017796s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.019304s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.106570s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.030879s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 130750 [ RunTime:0.455165s ]
