软件工程中设计软件时对图书管理系统的概要设计，这个是概要设计的实例。-Software engineering design software, library management system when a summary of the design, this is a summary of the design example.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.185638s ]
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:1.151570s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.061684s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.020414s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.013165s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.007584s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001000s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007902s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.074226s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.055228s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 225862 [ RunTime:0.052567s ]
