对数运算的C语言定点程序。给出了两个使用C的对数运算的实例，可作为参考。-C language sentinel procedures. Given two C"s right to use a few examples of operations that may be used as reference.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001405s ]
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:0.101979s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001322s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002028s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001372s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005147s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001279s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004029s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015487s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001808s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 227506 [ RunTime:0.001788s ]
