数据结构经典例题，机场模拟，单跑道，根据输入期望值随机生成起飞，降落飞机，注释详细-Classic example of data structure, airport simulation, single-track, in accordance with expectations for randomly generated input to take off and landing aircraft, detailed notes
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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:0.067219s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001178s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 269123 [ RunTime:0.013264s ]
