这是用VB编写的OPC应用程序代码。可以用于连接OPC数据服务器，实现数据的实时存取，是开放式控制系统的一种通讯标准。-The OPC application is written by VB.It s communication standard of opening control system,using in connecting OPC server and accessing database.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000857s ]
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:0.082294s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001402s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001930s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001269s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005223s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001118s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006202s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018547s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001064s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 125820 [ RunTime:0.012349s ]
