此文件是引文原版的matlab programming
它包括以下内容
Creating and Concatenating Matrices
Accessing Elements of a Matrix
Getting Information About a Matrix
。。。。。
总之包括所有matlab的使用方法
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001969s ]
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:0.097065s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002553s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001898s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002298s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003664s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002056s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003177s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016631s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002308s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 354016 [ RunTime:0.001338s ]
