操作系统概念（第七版）英文版的答案
INSTRUCTOR’S MANUAL
TO ACCOMPANY
OPERATINGSYSTEM
CONCEPTS
SEVENTH EDITION
ABRAHAM SILBERSCHATZ
Yale University
PETER BAER GALVIN
Corporate Technologies
GREG GAGNE
Westminster College
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001010s ]
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:0.080324s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001012s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.012126s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001319s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004995s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001865s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003531s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014317s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001042s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 528484 [ RunTime:0.317652s ]
