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:0.000787s ]
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:0.073897s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000967s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001195s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000952s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003340s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001068s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003596s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015265s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001112s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 121669 [ RunTime:0.016011s ]
