P0301：数字图像矩阵数据的显示及其傅立叶变换 P0302：二维离散余弦变换的图像压缩，在MATLAB环境下均通过调试-P0301: digital image data display matrix and its Fourier transform P0302: Two-dimensional discrete cosine transform image compression, in the MATLAB environment through debugging
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001209s ]
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:0.086545s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001199s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002063s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001147s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003580s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000987s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003201s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015031s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001325s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 85453 [ RunTime:0.001988s ]
