曲线拟合程序
多项式相关系数的计算方法(多项式形式1)
多项式相关系数的计算方法(多项式形式2)
最小二乘法曲线拟合
三次样条插值（自然边界条件）-polynomial curve fitting procedures correlation coefficient is calculated (the form of a polynomial) polynomial coefficient of correlation Methods (polynomial form 2) least-squares method curve fitting cubic spline interpolation (natural boundary conditions)
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002222s ]
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:0.094755s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002432s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002041s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002312s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003834s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002174s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003437s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016086s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002630s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 322167 [ RunTime:0.001157s ]
