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Voting/Ranking logic with SQL
select
    a.id,
    (
        select
            min(c.id)
        from
            table1 c
        where
            c.id>a.id
        limit 1
    ) as id2
from
    table1 a
order by
    rand()
limit 1;

select
    b.id
from
    table1 b,
    (
    select
        a.id as id
    from
        table1 a
    where
        a.id<(select max(id) from table1 limit 1)
    order by
        rand()
    limit 1
    ) a
where
    b.id>=a.id
    order by
    b.id
limit 2
;

with first as (select id
               from table t
               where id < (select max(id) from table)
               order by rand()
               limit 1
              )
select id
from table t
order by abs(id - first.id)
limit 2