计算机网络课后习题答案.
但是不是十分完整.
希望对大家学习好网络有帮助.
谢希仁!-after-school computer network Exercises answer. But not very complete. We hope to learn a good network helped. Xie Greek Hui!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000970s ]
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:0.100714s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001494s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002050s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001143s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004799s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000973s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004190s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024013s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.004500s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 151951 [ RunTime:0.016208s ]
