在VS2012下用MFC写成的简易网络聊天室程序，包含的知识点有ODBC连接MySql数据库、CSocket类的运用等，对于mfc新手是个不错的学习资源（如果项目无法在VS2012下运行，有可能是因为VS版本不匹配（由于之前是先用VS2013写的再转到VS2012），请对着项目右键，然后点属性，找到配置属性，将常规中的平台工具集选择为Visual Studio 2012 （v110），应用即可）
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001971s ]
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:0.139622s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001676s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003337s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001836s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005559s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001440s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004809s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.023757s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001992s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 35181 [ RunTime:0.001667s ]
