Using Gaussian elimination to solve linear equations.
// In this version, we allow matrix of any size. This is done by treating
// the name of a 2-dimensional array as pointer to the beginning of the
// array. This makes use of the fact that arrays in C are stored in
// row-major order.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001326s ]
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:0.077234s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001105s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001288s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001051s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003177s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000994s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003837s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015293s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001298s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 431478 [ RunTime:0.013744s ]
