一个材料力学课程的作业，用于惯性矩的计算，虽然比较小，但也是我平时学VB的积累。-a mechanical operation of the courses, for the moment of inertia, although relatively small, but I always learn is the accumulation of VB.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001373s ]
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:0.091724s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001271s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001972s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001821s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004115s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001090s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003190s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014802s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001356s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 121669 [ RunTime:0.001215s ]
