详细介绍了使用VB开发RS-232通信程序的全过程，并介绍了vb通信控件的用法。-Described in detail the use of VB-RS-232 communication program the whole process and introduced the use of the Communication Control in vb.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001558s ]
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:0.094187s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001306s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001940s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001378s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003758s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001190s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003265s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.019316s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002092s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 160828 [ RunTime:0.007511s ]
