Answer Posted / sysdomain

'top' will fetch only top most : ie top 5 means it will
fetch first 5 rec. After fetching rec only 'order by' is
done ie sorting is done after fetching. therefore using
'top' and 'order by' alone wont get max or min value. for
that we have to use 'distinct' before 'top' (which will sort
the records before fetching).

select top 1 salary from employee where salary in (select
distinct
top n salary from employee order by salary desc)

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