用这段代码:
UPDATE `cdb_access` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_activities` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_activityapplies` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_adminsessions` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_attachments` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_blogcaches` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_buddys` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_creditslog` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_favorites` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_memberfields` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_members` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_moderators` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_modworks` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_myposts` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_mythreads` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_onlinetime` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_orders` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_paymentlog` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_pmsearchindex` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_promotions` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_ratelog` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_searchindex` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_sessions` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_subscriptions` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_threadsmod` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_validating` SET `uid`=1 WHERE `uid`=49;
UPDATE `cdb_posts` SET `authorid` = 1 WHERE `authorid` = 49;
UPDATE `cdb_threads` SET `authorid` = 1 WHERE `authorid` = 49;
提示:升级错误,MySQL 提示: Duplicate entry '1' for key 1
请问这个是怎么回事啊?怎么解决啊???