5分代码及说明，verilog代码，几乎所有的IC面试都会问到这个问题，所以总结了一下发了上来，共同学习！-5 pm code and explanations verilog code Almost all the interviews will IC asked this question, summed up in the ranks about fat, learn together!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001610s ]
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:0.070278s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000937s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001235s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000985s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003048s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000839s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003521s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.013534s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001138s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 283334 [ RunTime:0.011928s ]
