八皇后问题的拓展，n皇后问题的深度优先算法，可以把结果以文件形式输出。N<=20-eight of the Queen"s expansion, n depth of the Queen"s priority algorithm, the results can be output in the form of a document. N
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.008287s ]
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:0.109639s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002378s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002411s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002290s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004193s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002233s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003334s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015657s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002453s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 154273 [ RunTime:0.001195s ]
