这是个关于类的示例，定义一个dog类，然后通过继承，派生出工作狗，宠物狗，商业狗等类，可以通过人机界面输入，修改信息。-This is a category for example, the definition of a dog category, and then through inheritance, derived from the work dogs, pet dogs, dogs and other types of business, human-machine interface can be imported, modified information.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001146s ]
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:0.064439s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001386s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001302s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001259s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003462s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001241s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004373s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015872s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001273s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 197344 [ RunTime:0.018540s ]
