Postgresql: Change field name in all table.

refactorFieldName.sql

do
$$
declare
  l_rec record;
begin
  for l_rec in (select table_schema, table_name, column_name
                from information_schema.columns
                where table_schema = 'public'
                  and column_name = 'mount') loop
     execute format ('alter table %I.%I rename column mount to amount', l_rec.table_schema, l_rec.table_name);
  end loop;
end;
$$;