用51汇编编写的CRC-4校验程序,生成多项式g(x) = x4 + x + 1, 非常适合数据量不大的场合.-51 compilation prepared by CRC-4 checksum procedure to generate the polynomial g (x) = x4+ X+ 1, the amount of data is not very suitable for the occasion.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001443s ]
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:0.092608s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001284s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003190s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001389s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003628s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001094s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003551s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014909s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001354s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 229952 [ RunTime:0.004158s ]
