最小二乘曲面拟合程序（m文件），对一组三维数据z=f(x,y)拟合，成为关于x和y的多项式-least squares fitting procedure Surface (m), a group of three-dimensional data z = f (x, y) fitting, be on the x and y polynomial
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002595s ]
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:0.097558s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002468s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002147s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003700s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.006797s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015878s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002283s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 4090 [ RunTime:0.001292s ]
