详细描述了一个学生名册的具体应用和增删改查等具体的操作，虽然简单，但比较实用-A detailed description of a specific application of the roster of students and additions to the operation of specific investigations, although simple, but more practical
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002627s ]
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:0.094317s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.007821s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002074s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002224s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004056s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002402s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006324s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015693s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002834s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 319468 [ RunTime:0.001299s ]
