alter table current_way_tags change k k varchar(255) not null default '';
alter table current_way_tags change v v varchar(255) not null default '';
-alter table gpx_files add column data longblob;
-alter table gpx_files add column mime_type varchar(255);
alter table gpx_files change private public boolean default 1 not null;
update gpx_files set public = !public;
-