How can I get these two results in two different columns?

Question

SELECT COUNT(attr_id)
FROM pv_attribute
WHERE port_id = 322;
SELECT COUNT(attr_id)
FROM pv_attribute
WHERE port_id = 323;
How can I get these two results in two different columns?
Thanks

Answer 1

So Jens made a tiny mistake with the column name... shame you couldn't be bothered to research Pivoting so you could have corrected the mistake (possibly it was deliberate *{:-) ) and learnt something.
with pv_attribute as (select 16123 attr_id, 322 port_id from dual union all
                      select 16123 attr_id, 322 port_id from dual union all
                      select 19223 attr_id, 322 port_id from dual union all
                      select 11193 attr_id, 323 port_id from dual union all
                      select 13163 attr_id, 323 port_id from dual)
-- end of test data setup
select sum(decode(port_id, 322, 1, 0)) cnt_322,
       sum(decode(port_id, 323, 1, 0)) cnt_323
from   pv_attribute
where  port_id in (322, 323)