操作系统深入了解，引导探究，对操作系统原理，各种机制进行详细阐述-Depth understanding of the operating system, and guide to explore the operating principles of a variety of mechanisms in detail
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001368s ]
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:0.080005s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001007s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001264s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000994s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003188s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000883s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003647s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014132s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001089s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 261379 [ RunTime:0.013430s ]
