多数代码可以直接在Delphi6和Delphi7环境下运行。部分涉及.NET技术内容的代码，需要在Delphi 7上安装Borland .NET Complier for Delphi编译器方可编译执行。Borland已经正式推出Delphi 8 for .NET，所以本书范例中部分内容可能与D8最终版本不符。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001034s ]
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:0.081948s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000952s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001224s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001017s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003181s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000995s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007624s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.019736s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001168s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 557552 [ RunTime:0.018022s ]
