WHERE emp_id = NULL;
A. Only those columns whose emp_id is NULL
B. Only those columns whose emp_id is not NULL
C. No output
D. None of these
Answer:A
WHERE emp_id = NULL;
A. Only those columns whose emp_id is NULL B. Only those columns whose emp_id is not NULL C. No output D. None of these
Explanation: An expression can never be equate to NULL that is why there will be no output.