国外嵌入式面试常见试题，快要毕业的朋友们，学习嵌入式的同志们，进来看看。-Embedded foreign common interview questions, about to graduate from friends, learning embedded Comrades, come take a look at.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.036708s ]
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:0.225158s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001402s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002597s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002105s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005062s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000974s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004183s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015694s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001090s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 301782 [ RunTime:0.015756s ]
