清华大学的一个数据结构讲义，容易理解 Tsinghua University, notes a data structure, easy to understand-Tsinghua University, notes a data structure, easy to understand Tsinghua University, notes a data structure, easy to understand
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.039028s ]
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:0.108565s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002485s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.004071s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001665s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003842s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001103s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.010312s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.049229s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002928s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 178092 [ RunTime:0.019550s ]
