很好用的串口类，可以以块的方式发送，可以以块的方式接收，而且可以一个一个字符的接收-good use of Serial category, to be sent to the block, the block can receive, but a character can be a receiver
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001781s ]
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:0.151885s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001672s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002872s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001857s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006333s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001812s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006048s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.023464s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002112s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 308378 [ RunTime:0.002405s ]
