陈列馆问题（不重复），每个房间不能重复监视，即每个房间有且仅有一个机器人监视-Museum issues (non-repetition), each room can not be repeated surveillance, that is, each room has one and only one robot to monitor
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001318s ]
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:0.089707s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001296s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001906s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001222s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003634s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001074s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003252s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018054s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001434s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 186737 [ RunTime:0.001281s ]
