1时间函数举例4,一个猜数游戏，判断一个人反应快慢。
2有两个磁盘文件A和B,各存放一行字母，要求把这两个文件中的信息合并（按字母顺序排列）输出到一个新文件C中。-A function of time, for example 4, a guess the number of games, judge a person reaction speed. 2 There are two disk files A and B, the storage of his letters, these two documents requested information in the merger (in alphabetical order) output to a new file in C.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001722s ]
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:0.065605s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001080s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001206s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000939s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003409s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001216s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005133s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015398s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001346s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 193529 [ RunTime:0.190023s ]
