串行通讯_查询方式 有详细的文字说明 可用于单片机 串行通讯时查询连通性用-Serial communication _ query has detailed text description can be used for single-chip serial communications connectivity with inquiries
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.009301s ]
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:0.087410s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001800s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002207s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002162s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003683s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002199s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003357s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014681s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002435s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 191424 [ RunTime:0.001162s ]
