Scenario 1:
SELECT 1 + NULLAns :- NULL :-
Question-2: SELECT 1- NULL
Ans :- NULL
Question-3: SELECT 1* NULL
Ans :- NULL
Question-4: SELECT 1/ NULL
Ans :- NULL
Scenario 2:
Question-1: SELECT CASE WHEN 1=1
THEN 'True' else 'False' End
Ans :- True
Question-2: SELECT CASE WHEN NULL=NULL
THEN 'True' else 'False' End
Ans :- False
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