数据结构中最经常用到的，包括链表、双链表、二叉树、平衡二叉树、哈希表等-Data structure the most frequently used, including the list, double linked lists, binary tree, balanced binary tree, hash table, etc.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000989s ]
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:0.100722s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000959s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001135s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000995s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003019s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000939s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003729s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015381s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001210s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 240948 [ RunTime:0.019330s ]
