When or why would you use a right outer join instead of left?

Question

Wikipedia states:

\"In practice, explicit right outer joins are rarely used, since they can always be replaced with left outer joins and provide no additional functi

Answer 1

I think it's difficult if you don't have right join in this case. ex with oracle.

with a as(
     select 1 id, 'a' name from dual union all
     select 2 id, 'b' name from dual union all
     select 3 id, 'c' name from dual union all
     select 4 id, 'd' name from dual union all
     select 5 id, 'e' name from dual union all
     select 6 id, 'f' name from dual 
), bx as(
   select 1 id, 'fa' f from dual union all
   select 3 id, 'fb' f from dual union all
   select 6 id, 'f' f from dual union all
   select 6 id, 'fc' f from dual 
)
select a.*, b.f, x.f
from a left join bx b on a.id = b.id
right join bx x on a.id = x.id
order by a.id