数据挖掘（概念与技术）书上的apiori算法实现。apiori剪枝算法使用候选项集产生发现频繁项集。-Data Mining (conceptual and technical) in a book apiori algorithm. apiori pruning algorithm uses candidate item set generated frequent itemsets found.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001014s ]
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:0.061354s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001057s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001114s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001051s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003189s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000826s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003493s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014436s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001049s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 255327 [ RunTime:0.011116s ]
