此算法为用于解反问题的lsqr算法，对Ax=b，输入矩阵A，列向量b，以及迭代步数，求得列向量x-This algorithm is used for solution of the inverse problem lsqr algorithm, Ax = b, the input matrix A, the column vector b, as well as the number of iterative steps, to seek the column vector x
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001439s ]
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:0.077321s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000954s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001256s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000899s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003098s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000713s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003483s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.023191s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001433s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 3727 [ RunTime:0.012924s ]
