1 ALTER TABLE forum_attachmenttype add column group_id integer;
3 UPDATE forum_attachmenttype set group_id=-1;
5 alter table forum_attachment drop constraint filehash;
7 alter table forum_attachmenttype drop constraint forum_attachmenttype_key;
10 ALTER TABLE ONLY forum_attachmenttype
11 ADD CONSTRAINT forum_attachmenttype_key PRIMARY KEY (extension,group_id);