What will be the output of

declare @Table1 table(id int)
insert into @Table1
select 1 union all select 2 union all select 3 union all select 4 union all
select 5 union all select 6 union all select 7 union all select 8

declare @Table2 table(id int)
insert into @Table2
select 1 union all select 2 union all select 5 union all select 8

select id from @Table1 except select id from @Table2