模拟WINDOWS的计算器，实现了计算器的简单功能，可以仿照WINDOWS的计算器，增加科学计算等功能-simulation of the Windows calculator, a calculator to achieve a simple function, can be modeled on the Windows calculator, increase scientific computing, and other functions
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001167s ]
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:0.085537s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001048s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001830s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001075s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003456s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000900s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003223s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.013839s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001172s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 68034 [ RunTime:0.001181s ]
