TSQL Comparing two Sets

Question

When two sets are given

s1 ={ a,b,c,d} s2={b,c,d,a}

(i.e)

TableA

Item
a
b
c
d

TableB

Item
b
c
d
a

How to write Sql quer

Answer 1

Could do it with EXCEPT and a case

select 
   case 
     when count (1)=0 
        then 'Elements in TableA and TableB contains identical sets' 
     else 'Nope' end from (
       select item from s1
      EXCEPT 
       select item from s2
) b