csharp实现的有关矩阵类相关代码,可以供初学者学习,适合一些数学系的同学-CSharp realization of the matrices related to the code, you can learn for beginners, suitable for a number of mathematics students
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002184s ]
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:0.093953s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001917s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001903s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002084s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003822s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001816s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003491s ]
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:0.002591s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 68531 [ RunTime:0.001202s ]