网桥的原理与作用，网桥工作在数据链路层，将两个LAN连起来，根据MAC地址来转发帧，具体详见文档-bridge with the principle role of bridge work at the data link layer to link two LANs, according to the MAC address to forward frames, the specific detailed documentation
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001402s ]
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:0.116138s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001116s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001899s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004454s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001409s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004982s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016086s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001676s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 283799 [ RunTime:0.001676s ]
