有关数学计算――点积
适合于计算图形,尤其多边形计算方面,英文网页-the mathematical calculations-- for the plot point in the calculation of graphics, particularly polygon calculations, the English website
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.018940s ]
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:0.084218s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.009866s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001998s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001614s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005652s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001615s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007579s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.027201s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001796s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 192458 [ RunTime:0.012751s ]