关于计算几何中的一些与多边行有关的算法，包括点线与多边形关系等等。-Computational geometry on some trip with multilateral algorithms, including the relationship between points, lines and polygons and so on.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001861s ]
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:0.141159s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001216s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001880s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001204s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003554s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001036s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003179s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014505s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001324s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 206081 [ RunTime:0.001309s ]
