对信号进行微积分,做数字信号处理的朋友可能常会用到。 这是前几天写的一个简单的微积分函数。请多指正。-right signals Calculus, the digital signal processing friends may often be used. This is written a few days before a simple calculus functions. Please correct.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001960s ]
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:0.089156s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002507s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001906s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002109s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003905s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.003462s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004419s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016344s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002587s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 289630 [ RunTime:0.001284s ]