oracle8.1.6 begin :1 := acs_message.edit ( message_id => :comment_id, title => :title, mime_type => :comment_mime_type, data => empty_blob(), creation_user => :user_id, creation_ip => :creation_ip, is_live => :is_live ); end; select content_item.get_latest_revision(:comment_id) as revision_id from dual update cr_revisions set content = empty_blob() where revision_id = :revision_id returning content into :1