该数据库编程结合结构力学知识，对结构工程专业的学生，设计软件应该很有帮助。-combination of the database programming knowledge structural mechanics, structural engineering students, design software should helpful.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001380s ]
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:0.090507s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001269s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001851s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001343s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003550s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001068s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003262s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.020729s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001458s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 154410 [ RunTime:0.001492s ]
