linux/unix系统的I/O也就是一般所说的低级I/O――操作系统提供的基本IO服务，与os绑定-linux/unix system, I/O is generally called low-level operating system I/O-- provision of basic IO services, os bind
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002139s ]
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:0.092952s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001180s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001377s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001136s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003518s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000848s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003612s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015386s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.015857s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 139957 [ RunTime:0.023399s ]
