CRC16和CRC32， 一个完整的循环冗余校验程序，在产品中使用的，有好的参考价值-CRC16 and CRC32, a complete cyclic redundancy check procedures used in their products, there are good reference value
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001317s ]
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:0.089960s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001257s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001906s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001266s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003596s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001063s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003226s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014413s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001281s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 236184 [ RunTime:0.001246s ]
