rDrama/migrations/20231104-allow-multiple-sidebar-images-for-holes.sql

alter table holes add column sidebarurls character varying(60)[] default '{}'::character varying[] not null;
update holes set sidebarurls = array_append(sidebarurls, sidebarurl) WHERE sidebarurl is not null;
alter table holes drop column sidebarurl;
update hole_actions set kind='upload_sidebar_image' where kind='change_sidebar_image';