oracle8.1.6 begin :1 := acs_message.new ( message_id => :comment_id, title => :title, mime_type => :comment_mime_type, data => empty_blob(), context_id => :context_id, creation_user => :user_id, creation_ip => :creation_ip, is_live => :is_live, rfc822_id => :rfc822_id ); end; update cr_revisions set content = empty_blob() where revision_id = :revision_id returning content into :1