这是程序是老师提供的源程序，其中包含了方程的离散等解法 值得一学习。-This is the program source code is provided by teachers, including the discrete equations method, etc. It is worth learning.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001587s ]
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:0.109978s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001261s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001912s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001239s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003670s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001085s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003301s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014271s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001329s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 299764 [ RunTime:0.001323s ]
