深度优先搜寻的模板，深搜可以解决很多图的问题，可以遍历图中的任意位置，从而解决问题-Depth-first search template, deep search problems can be solved a lot of plans, you can traverse the graph of an arbitrary position to solve the problem
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001049s ]
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:0.080619s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001388s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001353s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001142s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003503s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000949s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003821s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015652s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001201s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 149747 [ RunTime:0.016176s ]
