多级班级开放等级： 四个班级开放等级，班级管理员可以根据需要选择，以避免班外同学的干扰。-Multi-grade classes open : four classes open class, the class administrator can choose to avoid classes students outside interference.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001100s ]
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:0.064541s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001098s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001356s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001059s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003465s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000793s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004094s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014020s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001204s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 299085 [ RunTime:0.017817s ]
