Linq实现的三层架构数据库Web应用程序。对于Linq下如何分层目前还没有一个统一的标准，因此这个代码仅供参考-Linq to achieve three-tier database Web applications. How about Linq layer present there is no uniform standard, so this code is for reference only
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001039s ]
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:0.069478s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001425s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001305s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001081s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003239s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001033s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004412s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.019150s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.005575s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 70522 [ RunTime:0.020595s ]
