数据结构课程第一次实验
要求：1.基类和派生类的定义和实现（.h .cpp）
2.+ 运算符重载
3.<< 运算符重载
4.构造与重载函数应用-Data structure course first experiment requirements: 1. Base class and derived class definition and realize (. H. Cpp) 2.+ Operator overloading 3.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.008601s ]
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:0.128505s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002782s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002184s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.003608s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004353s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002500s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004447s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016575s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002755s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 229678 [ RunTime:0.001696s ]
