vs2008 平台下异质单链表的实现，利用虚函数来实现的，调试通过，加深对虚函数的理解-vs2008 platform realization of heterogeneous single-chain, the use of virtual function to achieve, and debugging through deepened understanding of the virtual function
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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:0.104226s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001318s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001350s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003633s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001149s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001494s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 262419 [ RunTime:0.001391s ]
