二叉树操作&图的遍历操作， 完全按照里面的文挡用VC所完成的程序， 有详细的说明-binary tree traversal operation of the plan operations, in full accordance with the text inside the block with VC performed by the procedure is described in detail in
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002334s ]
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:0.153711s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001527s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002047s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001493s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005518s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001678s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007028s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.032995s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001748s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 311019 [ RunTime:0.028126s ]
