数据结构中的树形结构的层序遍历，仅仅是是对树的创建，销毁，遍历，插入等常规操作的c源代码-Data structure in the tree structure traversal sequences, only yes yes right tree creation, destruction, traversal, insertion and other conventional operations c source code
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001001s ]
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:0.100153s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001040s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001628s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.005905s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.015557s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.019691s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005295s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.029124s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002069s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 296558 [ RunTime:0.016137s ]
