读取STM32芯片内部唯一的标识，用于加密等区别其他芯片的操作，有完整注释，测试通过-STM32 chip to read a unique identifier for the encryption and other differences other chip operation, with complete notes, test
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001355s ]
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:0.121026s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002434s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.011069s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.004077s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006410s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001704s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005179s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018417s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001130s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 483764 [ RunTime:0.018614s ]
