ALTER TABLE last_picture_cache ADD COLUMN last_update TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT now();
ALTER TABLE events DROP COLUMN last_update;
ALTER TABLE users ADD COLUMN digest_ha1_hex character(32);
ALTER TABLE last_picture_cache ADD COLUMN last_update TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT now();
ALTER TABLE events DROP COLUMN last_update;
ALTER TABLE users ADD COLUMN digest_ha1_hex character(32);