alter table `cdb_activityapplies` modify `username` varchar(20);
alter table `cdb_adminnotes` modify `admin` varchar(20);
alter table `cdb_announcements` modify `author` varchar(20);
alter table `cdb_banned` modify `admin` varchar(20);
alter table `cdb_creditslog` modify `fromto` varchar(20);
alter table `cdb_debates` modify `umpire` varchar(20);
alter table `cdb_feeds` modify `username` varchar(20);
alter table `cdb_forumrecommend` modify `author` varchar(20);
alter table `cdb_magicmarket` modify `username` varchar(20);
alter table `cdb_members` modify `username` varchar(20);
alter table `cdb_mytasks` modify `username` varchar(20);
alter table `cdb_orders` modify `admin` varchar(20);
alter table `cdb_posts` modify `author` varchar(20);
alter table `cdb_promotions` modify `username` varchar(20);
alter table `cdb_ratelog` modify `username` varchar(20);
alter table `cdb_reportlog` modify `username` varchar(20);
alter table `cdb_rsscaches` modify `author` varchar(20);
alter table `cdb_sessions` modify `username` varchar(20);
alter table `cdb_threads` modify `author` varchar(20);
alter table `cdb_threads` modify `lastposter` varchar(20);
alter table `cdb_threadsmod` modify `username` varchar(20);
alter table `cdb_tradecomments` modify `rater` varchar(20);
alter table `cdb_tradecomments` modify `ratee` varchar(20);
alter table `cdb_tradelog` modify `seller` varchar(20);
alter table `cdb_tradelog` modify `buyer` varchar(20);
alter table `cdb_trades` modify `seller` varchar(20);
alter table `cdb_trades` modify `lastbuyer` varchar(20);
alter table `cdb_uc_admins` modify `username` varchar(20);
alter table `cdb_uc_badwords` modify `admin` varchar(20);
alter table `cdb_uc_feeds` modify `username` varchar(20);
alter table `cdb_uc_members` modify `username` varchar(20);
alter table `cdb_uc_mergemembers` modify `username` varchar(20);
alter table `cdb_uc_pms` modify `msgfrom` varchar(20);
alter table `cdb_uc_protectedmembers` modify `username` varchar(20);
alter table `cdb_uc_protectedmembers` modify `admin` varchar(20);
alter table `cdb_validating` modify `admin` varchar(20);
alter table `cdb_warnings` modify `operator` varchar(20);
alter table `cdb_warnings` modify `author` varchar(20);
alter table `cdb_words` modify `admin` varchar(20);