用于枚举Windows系统中存在的各类串口设备，包括普通串口，USB串口，以及蓝牙串口。-lists all serial ports available on the system, along with some descriptive text suitable to be shown to the user.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002532s ]
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:0.081861s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001842s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001704s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001615s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.013890s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001470s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004465s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.020504s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.117725s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 133908 [ RunTime:0.072784s ]
