Multiple choice technology databases select nvl2(exp1,exp2,exp3) from dual. In this if exp1 is null,what will be the output? exp1 exp2 exp3 error Reveal answer Fill a bubble to check yourself C Correct answer Explanation The Oracle NVL2 function evaluates the first expression. If it is not null, it returns the second expression, but if it is null, it returns the third expression.