迭代回朔算法是计算机中很常用的算法， 我的程序是一个八皇后问题。-back Schomburg iterative algorithm is quite commonly used computer algorithms, the procedure is a Queen"s eight issues.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001353s ]
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:0.090137s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001259s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001872s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001252s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003596s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001050s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003163s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014604s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001438s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 123062 [ RunTime:0.001505s ]
