Finite Difference Method for Poisson equation.
-Δu =f(x,y) in Ω
u(x,y)=0 on Γ-Finite Difference Method for Poisson equation.
-Δu =f(x,y) in Ω
u(x,y)=0 on Γ
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002022s ]
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:0.090398s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002402s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002414s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.008610s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004234s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001995s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003395s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015308s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002493s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 13561 [ RunTime:0.001212s ]
