51单片机常用子程序大全，包括多字节加减乘除，码字转换，浮点数格式化-51 microcontroller used subroutine Daquan, including multi-byte arithmetic, code conversion, floating point format, etc.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001375s ]
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:0.128228s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.007262s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.008586s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002021s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006373s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002156s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006792s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.041850s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001929s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 239446 [ RunTime:0.026467s ]
