坐标转换：已知n个点在a,b两坐标系中的坐标值，采用优化方法求转换关系（标准的7参数转换关系，x,y,z的移动，x,y,z的旋转，以及缩放系数）ps:附带空间旋转公式。input: points in A and B。 output：transfer relationship （u,v,w: shit of x,y,z。 a,b,g: rotate of x,y,z 。k：zoom）
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001713s ]
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:0.135095s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001449s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002444s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001269s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003660s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001081s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003800s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014995s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001382s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 340693 [ RunTime:0.001342s ]
