这是在.net环境中使用水晶报表的例子，用的语言是C#，使用的数据源是ADO.net数据集。-This is the. Net environment, examples of the use of Crystal Reports, using the language is C#, The use of the data source is ADO.net data sets.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002477s ]
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:0.138506s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002704s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001988s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002367s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003565s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002100s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003353s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015548s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.009236s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 75243 [ RunTime:0.001362s ]
