通过vc实线相关正态分布的计算，计算正态分布的平均值等-The solid line through the vc related to the calculation of the normal distribution to calculate the average of the normal distribution, etc.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002894s ]
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:0.131245s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002903s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003160s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002459s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004547s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002388s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003443s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.023976s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002940s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 185068 [ RunTime:0.001149s ]
