扫描二维或三维区域的交叉部分，通过三维曲线，得到交叉部分的曲面区域-Sweeps out a 2D cross section (a circle, square, whatever, doesn t even have to be a closed path) through a 3D curve, and returns the generated surface as [X,Y,Z] for use with SURF.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001878s ]
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:0.094271s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002109s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001996s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002295s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003628s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002144s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003460s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015061s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002252s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 251349 [ RunTime:0.001217s ]
