A

Arogya • 3.49K Points
Extraordinary

Q. Output?
SELECT COUNT(NULL) FROM dual;

(A) 1
(B) 0
(C) NULL
(D) Error

Correct Answer - Option(B)
Views: 10
Filed under category Oracle Database
Hashtags: Oracle Database Interview

Explanation by: Arogya

COUNT(expression) ignores NULL values.

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