一个二维条码生成程序，封装成一个控件，可以在网页上使用，从串口读取数据！-A two-dimensional bar code generating program, packaged as a control on the page can be used to read data from the serial port!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002259s ]
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:0.087007s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002520s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001924s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002205s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003588s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002103s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003272s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015362s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002857s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 149905 [ RunTime:0.001423s ]
