【2020年8月】Oracle OCP 071考试新题(-6题)CUUG内部题库
Choose the best answer.
Examine this statement:
SELECT 1 AS id, 'John' AS first_name, NULL AS commission
FROM DUAL
INTERSECT
SELECT 1, 'John' ,NULL
FROM DUAL
ORDER BY 3;
What is returned upon execution?
A) 2 rows
B) 1 row.
C) 0 rows
D) an error
2020年8月份Oracle OCP 071考试新题(-5题)CUUG内部题库，钉钉群(35277291)Oracle金牌名师亲自题库解析