采用MATLAB解答奥本海姆数字信号处理习题答案 ，是学习数字信号处理的朋友必不可少的参考书-using MATLAB answer Oppenheim digital signal processing Exercise answer is studying digital signal processing friends indispensable reference book
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001105s ]
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:0.084475s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001274s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001838s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001090s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003511s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000917s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003192s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018237s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001444s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 34404 [ RunTime:0.001334s ]
