容器类的实现和定义，由于使用迭代器需 要关于STL容器类和算法的知识,-container class and the realization of the definition, because the need for the use of iterative STL containers on the type and algorithms knowledge,
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001201s ]
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:0.094203s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001144s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001126s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001023s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004310s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001062s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003891s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015043s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001123s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 111853 [ RunTime:0.021888s ]
