opc da 范例 1.进程外服务器。
2.支持异步通讯,支持回调。
3.最多支持10客户访问。
4.每客户可以最多建立10个Group对象。
5.支持Group对象的添加，删除，可以设置Group的名称，状态。
-an example. Foreign process server. 2. Support asynchronous communication, support callback. 3. Most support 10 customers visit. 4. Each customer can build up to 10 Object Group. 5. Group targets support the addition, deletion, can set the Group name, state.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001563s ]
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:0.103984s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001160s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001916s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001166s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003622s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001016s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003314s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014607s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001276s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 242896 [ RunTime:0.001259s ]
