北大教授张抿讲授应用栈实现从递归到非递归的转换，机制十分灵巧-taught purse up from the application stack realization of the non- recursive recursive conversion, a very ingenious mechanism
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001697s ]
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:0.098854s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001226s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001885s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001222s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003601s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001012s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003161s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016084s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001515s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 247089 [ RunTime:0.001505s ]
