这是个能实现链队列的创建、删除、插入、销毁的程序，对于链表的学习很有用。-This is a chain to realize the creation of the queue, delete, insert, the destruction of the procedure, the list of study very useful.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001084s ]
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:0.085470s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001040s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001478s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001036s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004945s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001442s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007103s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.021811s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002043s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 320360 [ RunTime:0.030422s ]
