该程序提供对需要进行遍历的树的自定义输入，并可以在对树进行先序线索化之后遍历该树。-the procedures needed to traverse the tree from the definition of import, and to be right tree for first sequence of clues after traversal of the tree.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001594s ]
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:0.122297s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001574s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002166s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001656s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006065s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001375s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005623s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.020547s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001828s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 314832 [ RunTime:0.001714s ]
