一个简单的通讯录程序，自己编写的控制台程序，利用了链表，是一个关于链表操作学习的很好例子。-A simple address book program, their own procedures for the preparation of the console, using a linked list is a list to operate on a very good example of learning.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001087s ]
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:0.070616s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001337s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001921s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000946s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003056s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000789s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005583s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.039962s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001341s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 190917 [ RunTime:0.019069s ]
