通过学习，理解继承热性的用法，程序中通过直线和点之间的继承特性进行演示了。-Through the study, understanding the usage of heat inherited the program through the succession between the lines and points, demonstrate the properties.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001624s ]
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:0.102248s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.009846s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.006598s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001132s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003714s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002071s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004056s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.017382s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001260s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 197733 [ RunTime:0.127939s ]
