这个程序实现了内存空间的动态管理和分配，模拟了操作系统中内存管理的一种重要方法-This procedure achieved a memory space of dynamic management and allocation, to simulate the operating system memory management an important method
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001496s ]
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:0.079468s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001038s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001271s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001064s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003189s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000819s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003735s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018931s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001365s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 114596 [ RunTime:0.015912s ]
