% Syntax: x=sirt(A,b,tolx,maxiter)
%
% Inputs:
% A = Constraint matrix. A=一个约束矩阵
% b = right hand side. b=右边
% tolx = Terminate when the relative diff between tolx=终止时，两次迭代之间的相对差异小于tolx。
% two iterations is less than tolx.
% maxiter = Stop after maxiter iterations. maxiter=停止迭代后
%
% Outputs:
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SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001926s ]
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:0.092210s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001152s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001115s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001032s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003347s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000765s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003713s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014800s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001298s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 279877 [ RunTime:0.011975s ]
