c++初学者用来练习的程序实例，从简单到复杂，有详细的说明文档！-c++ for beginners to practice procedures for instance, from simple to complex, contains a detailed description of the document!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001317s ]
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:0.087556s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001247s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001901s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001240s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003587s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001071s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003204s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014505s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001325s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 60795 [ RunTime:0.001114s ]
