一个将数据打包成以太网帧的示例程序，该程序读取一个文件，然后将文件中的数据打包成以太网帧-Packaged into an Ethernet data frame sample program to read a file, and then the data in the package file into the Ethernet frame
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.005099s ]
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:0.176660s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.006739s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002022s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002457s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.010259s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000927s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004630s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014748s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001187s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 150012 [ RunTime:0.009874s ]
