这是我们做操作系统的一个作业，用C++程序模拟了一下，望大家指点阿，初学。-This is our operating system to do an operation, using C++ Program to simulate the look, hope everyone pointing Ah, beginner.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001060s ]
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:0.081541s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000986s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002407s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001067s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004700s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000889s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004053s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015428s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001129s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 57936 [ RunTime:0.018492s ]
