在线答题系统。整个功能都已经实现。欢迎作用，，如果有问题，请帮忙指点。-On-line answer system. The functionality has been achieved. Welcomes the role, if there are problems, please help pointing. Thanks
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001243s ]
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:0.076236s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001085s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001253s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001402s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003137s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001007s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003684s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014704s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001337s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 150043 [ RunTime:0.016209s ]
