采用MAX485 芯片 使用ARM 系统硬件的UART 编程实现RS485 通信的基本收发功能-Using MAX485 chip systems using ARM hardware UART Programming RS485 communication function of the basic transceiver
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001952s ]
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:0.152818s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001712s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003174s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001627s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005769s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001318s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005551s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015337s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002408s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 187668 [ RunTime:0.001424s ]