Jag tror att du vill ha en FULLSTÄNDIG YTTRE JOIN av alla 5 frågor:
with
cte1 as (
select id, sum(num1) val1 from details
group by id
order by sum(num1) desc nulls last limit 10
),
cte2 as (
select id, sum(num2) val2 from details
group by id
order by sum(num2) desc nulls last limit 10
),
cte3 as (
select id, sum(num3) val3 from details
group by id
order by sum(num3) desc nulls last limit 10
),
cte4 as (
select id, sum(num4) val4 from details
group by id
order by sum(num4) desc nulls last limit 10
),
cte5 as (
select id, sum(num5) val5 from details
group by id
order by sum(num5) desc nulls last limit 10
)
select coalesce(c1.id, c2.id, c3.id, c4.id, c5.id) id,
c1.val1, c2.val2, c3.val3, c4.val4, c5.val5
from cte1 c1
full outer join cte2 c2 on c2.id = c1.id
full outer join cte3 c3 on c3.id = c2.id
full outer join cte4 c4 on c4.id = c3.id
full outer join cte5 c5 on c5.id = c4.id