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;
+
+