1z0-071 Exam Dumps | Examine this statement: SELECT1 AS id,' John' AS first_name, NULL AS commission FROM dual INTERSECT SELECT

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Question 70/139

Examine this statement:
SELECT1 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. 0 rows

C. An error

D. 1 ROW

Correct Answer: D

Regarding the provided SQL INTERSECT query:
* D. 1 ROW: The INTERSECT operation will compare the two SELECT statements and return rows that are identical between them. Both queries are designed to return the same values ('1' for the ID, 'John' for the name, and NULL for the commission), hence one row that is identical between the two datasets will be returned.
Incorrect options:
* A: Only one identical row exists between the two datasets.
* B: There is an identical row; thus, it is not zero.
* C: There is no error in the syntax or execution of the query.

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