关于分支为3的树，它的节点种类总数小于7，深度为3，全探索的源代码-With regard to the three branches of the tree, which is less than the total number of nodes of type 7, a depth of 3, all to explore the source code
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001401s ]
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:0.090030s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001254s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002046s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001267s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003585s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001047s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003172s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015194s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001446s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 183331 [ RunTime:0.001452s ]
