这是一个公有继承类的实例，在基类设置了一个成员函数，在其派生类中使用公有继承，详细见源程序-This is a public instance of a class inheritance, in the base class set up a member function using derived class in their public inheritance, in detail see the source code
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001417s ]
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:0.092515s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001247s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001901s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001245s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003587s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001049s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003280s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015328s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001418s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 295601 [ RunTime:0.001402s ]
