-- More statistics, for version 1.14
ALTER TABLE /*$wgDBprefix*/site_stats ADD ss_active_users bigint default '-1';
-SELECT @activeusers := COUNT( DISTINCT rc_user_text ) FROM /*$wgDBprefix*/recentchanges
-WHERE rc_user != 0 AND rc_bot = 0 AND rc_log_type != 'newusers';
-UPDATE /*$wgDBprefix*/site_stats SET ss_active_users=@activeusers;