Association condition of SQL left connection

Hive SQL

existing surface A,B,C,D, Among them user_id As the association condition of each table If you want to pass ABCD The table forms funnel data (A The table shows the maximum funnel D Table shows the minimum funnel )
select count(distinct a.user_id),count(distinct b.user_id),count(distinct c.user_id),count(distinct d.user_id)
from
(select user_id
from a
) as a
left join
(
select user_id
from b
) as b
on a.user_id=b.user_id
left join
(
select user_id
from c
) as c
on b.user_id=c.user_id
left join
(
select user_id
from d
) as d
on c.user_id=d.user_id
By table c For example Please write in the following related conditions b.user_id=c.user_id or a.user_id=c.user_id Will there be any difference in data or operating efficiency