8051上的CRC8校验 A CCITT-8 CRC calculator. The source contains both the calculated (smaller but slower) version, and the table driven (faster but larger) version.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001347s ]
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:0.062806s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000982s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001116s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001005s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.002829s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000846s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003757s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024178s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001537s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 388013 [ RunTime:0.012362s ]
