<自己动手写操作系统>源代码第一章，原书附带程序，由于不知道总共能上传多大的文件，附件为第一章代码。- source code of the first chapter, the original book incidental procedures, as a result do not know how much total to upload files, attachment to the first chapter code.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000993s ]
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:0.059258s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001124s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001117s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001023s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003090s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000850s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003489s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014116s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001118s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 145271 [ RunTime:0.014896s ]
