LwIP协议栈的设计与实现，是中文的，对如何理解和移植lwip协议栈非常有帮助-Implementation of LwIP Protocol Stack Design and Implementation of Chinese. how to understand and transplant lwip protocol stack has been very helpful
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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:0.087118s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001293s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003572s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001054s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001375s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 290737 [ RunTime:0.001225s ]
