最新收集得老外写的一个矩阵类，功能相当的强大，比以前的源码水平提高了不少，源码中有相当详细的英文注释，简单明了！-collected in the latest foreigner to write a matrix of type, quite powerful, the source than the level a lot, a significant source of detailed notes in English, simple!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001866s ]
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:0.103906s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001265s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001130s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001397s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003313s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000942s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003763s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015397s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001087s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 142010 [ RunTime:0.020054s ]
