alter table ttrss_feeds add column last_error text;
alter table ttrss_feeds add column site_url varchar(250);
+alter table ttrss_feeds add column update_interval integer;
update ttrss_feeds set last_error = '';
update ttrss_feeds set site_url = '';
+update ttrss_feeds set update_interval = 0;
alter table ttrss_feeds alter column last_error set not null;
alter table ttrss_feeds alter column last_error set default '';
alter table ttrss_feeds alter column site_url set not null;
alter table ttrss_feeds alter column site_url set default '';
+alter table ttrss_feeds alter column update_interval set not null;
+alter table ttrss_feeds alter column update_interval set default 0;
+
create table ttrss_version (schema_version int not null);
insert into ttrss_version values (1);