SQL - SELECT MAX() and accompanying field

Question

What I have is basically a problem which is easily solved with multiple tables, but I have only a single table to do it.

Consider the following database table

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Answer 1

I think I have a solution that's different from the ones already proposed:

select *
from foo
where id = (
  select id
  from foo F
  where F.bar = foo.bar
  order by F.baz
  limit 1
)

This gives you all the foo records that have the greatest baz compared to other foo records with the same bar.