巴特沃斯滤波器代码的C语言实现。适合初学者了解IIR滤波器的涉及原理及使用-Butterworth filter code, C language. IIR filter is suitable for beginners to understand and use involving the principle
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.006395s ]
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:0.105131s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002334s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001943s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002262s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003666s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002235s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003269s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014375s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.003097s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 151628 [ RunTime:0.001249s ]
