-ALTER TABLE Media ADD COLUMN EndFile integer not null default 0;
-ALTER TABLE Media ADD COLUMN EndBlock integer not null default 0;
+ALTER TABLE media ADD COLUMN EndFile integer;
+UPDATE media SET EndFile=0;
+ALTER TABLE media ALTER COLUMN EndFile SET NOT NULL;
+ALTER TABLE media ADD COLUMN EndBlock bigint;
+UPDATE media SET EndBlock=0;
+ALTER TABLE media ALTER COLUMN EndBlock SET NOT NULL;
+
+UPDATE Filename SET Name='' WHERE Name=' ';
+
+alter table file alter column filenameid rename to filenameid-old;
+alter table file add column filenameid integer;
+update file set filenameid = filenameid-old;
+alter table file alter column filenameid set not null;
+alter table file drop column filenameid-old;