求图中的祖先节点(不含父亲节点)
内含说明，学图论或人工智能的朋友会用到的。希望有利于理解书上的论述。-plans for their ancestral nodes (excluding the father nodes) intron show that studying graph theory in artificial intelligence or a friend will use the. Hope to understand book expositions.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001370s ]
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:0.102107s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001365s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001961s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001421s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003926s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001287s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003353s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016556s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001495s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 140069 [ RunTime:0.001337s ]
