有关于学生成绩的记录以及计算，并且还会有成绩的排名和查询等动能。-Student performance on the record and calculate, and there will be performance ranking and query such as kinetic energy.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001330s ]
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:0.087417s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001229s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001893s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001145s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003529s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000981s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003812s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015095s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001396s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 240507 [ RunTime:0.001648s ]
