算法设计与分析 王晓东 课后答案全解析，全面帮助大家解决书中的疑难问题-Algorithm Design and Analysis Xiaodong answer to the whole after-school analysis, a comprehensive book to help people solve the difficult problems
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001889s ]
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:0.090852s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002427s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001848s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002111s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003542s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002056s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003135s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014333s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.003800s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 311013 [ RunTime:0.001064s ]
