select count(make_keywords(v)) from (select distinct svals(name) as v from place) as w where v is not null;
select count(make_keywords(v)) from (select distinct postcode as v from place) as w where v is not null;
select count(make_keywords(v)) from (select distinct svals(name) as v from place) as w where v is not null;
select count(make_keywords(v)) from (select distinct postcode as v from place) as w where v is not null;