这个源程序主要是针对C++的继承特性而写的，程序里面的解释很清楚。-This source is mainly for C++ inheritance characteristics of written procedures for the interpretation of which is clear.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002515s ]
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:0.086475s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002133s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002093s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002307s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003936s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002339s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004059s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.022293s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.003360s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 61494 [ RunTime:0.001427s ]
